ICSE Solutions for Class 10 Mathematics – Solving Linear Inequations in One Variable

ICSE Solutions for Class 10 Mathematics – Solving Linear Inequations in One Variable

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Formulae

Two permissible rules:

  1. Addition – Subtraction Rule:
    If the same number or expression is added to or subtracted from both sides of an inequation, the resulting inequation has the same solution (or solutions) as the original.
  2. Multiplication – Division Rule:
    (i) If both sides of an inequation are multiplied or divided by the same positive number, the resulting inequation has the same solution (or solutions) as the original.
    (ii) If both sides of an inequation are multiplied or divided by the same negative number, the resulting inequation has the same solution (or solutions) as the original if the symbol of the inequality is reversed.
    Thus, the only difference between solving a linear equation and solving an inequation concerns multiplying or dividing both sides by a negative number. Therefore, always reverse the symbol of an inequation when multiplying or dividing by a negative number.
  3. Properties of absolute values:
    icse-solutions-class-10-mathematics-6
    icse-solutions-class-10-mathematics-7

Determine the Following

Question 1. Give that x ∈ I. Solve the inequation and graph the solution on the number line:
icse-solutions-class-10-mathematics-1

Question 2. Graph the solution set for each inequality:
icse-solutions-class-10-mathematics-2
icse-solutions-class-10-mathematics-3
Question 3. Solve the given inequation and graph the solution on the number line
icse-solutions-class-10-mathematics-4

Question 4. Given that x ∈ R, solve the following inequality and graph the solution on the number line:
icse-solutions-class-10-mathematics-5

Question 5. Given:

icse-solutions-class-10-mathematics-6
Question 6. Solve 2 ≤ 2x – 3 ≤ 5, x ∈ R and mark it on a number line.
icse-solutions-class-10-mathematics-7
icse-solutions-class-10-mathematics-8

Question 7. For each inequality, determine which of the given numbers are in the solution set:
icse-solutions-class-10-mathematics-9

Question 8. Graph the solution sets of the following inequalities:
icse-solutions-class-10-mathematics-10

Question 9. Solve the equation and represent the solution set on the number line.
icse-solutions-class-10-mathematics-11

Question 10. Solve the following inequation and represent the solution set on the number line:
icse-solutions-class-10-mathematics-12

Question 11. Solve the following in equalities and graph their solution set
icse-solutions-class-10-mathematics-13
icse-solutions-class-10-mathematics-14

Question 12. Solve the following inequation and graph the solution set,
icse-solutions-class-10-mathematics-15

Question 13. Solve the following inequation and graph the solution on the number line.
icse-solutions-class-10-mathematics-16
icse-solutions-class-10-mathematics-17

Question 14. Solve the following inequalities and represent the solution on a number line:
icse-solutions-class-10-mathematics-18
icse-solutions-class-10-mathematics-19
icse-solutions-class-10-mathematics-20

icse-solutions-class-10-mathematics-21

Question 15. Solve the following inequalities and represent the solution set on a number line:
icse-solutions-class-10-mathematics-22
icse-solutions-class-10-mathematics-23
icse-solutions-class-10-mathematics-24
icse-solutions-class-10-mathematics-25

Question 16. Solve the following inequation, write the solution set and represent it on the number line:
icse-solutions-class-10-mathematics-26
icse-solutions-class-10-mathematics-27

Question 17. Find the values of x, which satisfy the inequation
icse-solutions-class-10-mathematics-28
icse-solutions-class-10-mathematics-29

Question 18. Solve the following inequalities in the given universal set:
icse-solutions-class-10-mathematics-30
icse-solutions-class-10-mathematics-31
icse-solutions-class-10-mathematics-32

Question 19. Find the solution set of the following inequalities and draw the graph of their solutions sets:
icse-solutions-class-10-mathematics-33
icse-solutions-class-10-mathematics-34
icse-solutions-class-10-mathematics-35
icse-solutions-class-10-mathematics-36

Question 20. Solve the following inequalities and graph their solution set:
icse-solutions-class-10-mathematics-37
icse-solutions-class-10-mathematics-38

For More Resources

ICSE Solutions for Class 8 Geography Voyage – Urbanization

ICSE Solutions for Class 8 Geography Voyage – Urbanization

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ICSE Solutions Class 8 GeographyHistory & CivicsBiologyChemistryPhysicsMaths

Exercises

A. Fill in the blanks

  1. Cities offer the migrant better education prospects for him or his children.
  2. Workers in cities get higher wages.
  3. Rural areas act as the push factor while urban areas are the pull factor.
  4. Satellite towns or cities are socially and economically independent, either completely or partially.
  5. In India, 60 cities have been selected as Smart Cities.

B. Match the following columns
ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 1

Answer:

ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 2

C. State whether the following are true or false

1. Rapid industrial growth in and around the city leads to lack of job opportunities.
Answer. False.
Rapid industrial growth in and around the city leads to plenty of job opportunities.

2. People in the urban areas have less access to health, educational, cultural and social services than in rural areas.
Answer. False.
People in the urban areas have greater access to health, educational, cultural and social services than in rural areas.

3. Slums are usually located on land not owned by the slum dwellers.
Answer. True.

4. Satellite towns/cities are connected to the metropolis by trains and motorways.
Answer. True.

5. Mumbai is one of the 20 cities selected as Smart Cities.
Answer. False.
Mumbai is not one of the 60 cities selected as Smart Cities.

D. Answer the following questions in brief

Question 1.
Define urbanization ?
Answer:
Urbanization is the process in which more and more people start to live and work in towns and cities rather than villages.

Question 2.
List any three factors responsible for the urbanization of a place.
Answer:
Factors responsible for the urbanization of a place are :

  1. Rapid industrial growth in and around cities provide plenty of job opportunities.
  2. Modern lifestyle and freedom from social practice like caste system in villages.
  3. Better medical facilities and health care services.
  4. Better education prospects for migrants and their children.
  5. Cities offer higher wages to workers.

Question 3.
Mention three ways in which the environment is affected as a result of increased urbanization.
Answer:
With the increase in urbanization, the environment is affected in many ways as :

  1. There is a steep rise in air pollution due to more factories and motor vehicles plying on the roads.
  2. The expansion of cities leads to the destruction of flora and fauna. Demand for more housing leads to deforestation and destruction of wetlands which drive away many birds and animals from their natural habitats.
  3. In many areas close to the sea, urbanization damages the ocean ecosystem.
  4. Destruction of green areas and increase in buildings leads to an increase in city temperatures.
  5. Rise in air pollution leads to respiratory diseases and allergies.

Question 4.
What are satellite cities ?
Answer:

  • Satellite cities : are smaller cities that come around larger cities but are independent of them. Its main objective is to relieve pressure from the main city. For example :
  • Main city : New Delhi — Satellite cities are Noida and Gurugram.
    Main city Mubai — Satellite cities are Thane and Navi Mumbai.

Question 5.
Briefly mention the aspects of urban life which serve as the basis for the smart cities.
Answer:
The different aspects of urban life which are normally the basis of smart cities are economy, environment, governance, human capital, international outreach, mobility and transportation, public management, social cohesion, technology, and urban planning.

Question 6.
What do you understand by Smart Cities ?
Answer:
Smart Cities : are urban regions that are highly advanced in terms of overall infrastructure, sustainable real estate, communications and market viability. The main purpose of a smart city is to improve the quality of life of the people by using information technology (IT) and to push economic growth. For example : In India, 60 cities have been selected as — ‘Smart Cities’ under Smart Cities mission. It include Jaipur, Pune, Lucknow, Chandigarh, Hyderabad, Raipur, Indore, Bhopal, Kochi, etc.

Question 7.
Mention any five smart cities of India.
Answer:
Smart Cities : Hyderabad, Vadodara, Kochi, Visakhapatnam, Guwahati, Raipur, Bilaspur, Durgapur, Indore, Gwalior, Rourkela, Jabalpur and Bhopal.

Question 8.
Mention the top ten smart cities in the world.
Answer:
The top 10 smart cities in the world (as in 2017)
ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 3
ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 4

E. Answer the following questions in detail

Question 1.
What are the positive impacts of urbanization ?
Answer:
Positive impacts of urbanization :

  1. There is development and expansion of essential services like clean water, electricity and transport in cities.
  2. People in urban areas have greater access to health, educational, cultural and social services than in rural areas.
  3. More schools, colleges, training centers and universities provide better prospects to the children of migrants.
  4. Urbanization creates harmony among people coming from different strata of society, allowing people of different castes, groups, languages and religions to live and work together, breaking down the social and cultural barriers.
  5. Urbanization allows people to acquire modern communication skills, knowledge of computers, smartphones, languages, etc which enable them to get jobs.
  6. Urbanization also provides people the opportunity to acquire training and work experience in hi-tech industries, enhancing their skills and facilitating them to migrate to other countries.

Question 2.
How does urbanization negatively impact the lives of people?
Answer:
Negative effects of urbanization :

  1. Migrants from village to cities end up being labourers and lead to the creation of slums.
  2. Slum owners can easily throw out the slum dwellers from their houses.
  3. Growth in slums puts extra pressure on essential utilities like clean drinking water, sanitation, electricity supply, etc.
  4. Overcrowding in slums lead to the outbreak of diseases such as malaria and dengue.
  5. unemployment increases as the number of people looking for jobs is more than jobs available.
  6. Unemployment and poverty force people to do crimes.
  7. With urbanization, environment is affected is many ways.
  • There is a steep rise in air pollution due to more factories and motor vehicles plying on the roads.
  • The expansion of cities leads to the destruction of flora and fauna. Demand for more housing leads to deforestation and destruction of wetlands which drive away many birds and animals from their natural habitats.
  • In many areas close to the sea, urbanization damages the ocean ecosystem.
  • Destruction of green areas and increase in buildings leads to an increase in city temperatures.
  • Rise in air pollution leads to respiratory diseases and allergies.

Question 3.
Briefly explain ways of reducing the negative impact of urbanization.
Answer:
Ways to reduce the negative impact of urbanization : There are various steps that the government can take to check and reduce the negative effects of urbanization.

  1. Sustainable and environment-friendly cities : The government should plan and provide environment-friendly cities with smart growth techniques and should pass laws to this effect. It is quite unhealthy for people to reside in unsafe and polluted areas. Therefore, the government should aim to build sustainable cities with improved environmental conditions and habitats which are safe and clean for people living in urban areas.
  2. Provision of essential services : The government at the local level must ensure,that all populations living within the urban areas have access to adequate essential services such as education, health, sanitation and clean water, technology, electricity and food. Jobs and earning opportunities must be provided so that people can earn a living and lead a good quality life. Subsidies should also be provided by the government so that the costs of basic healthcare, education, public transportation, communication systems, energy and technology can be reduced.
  3. More job creation : More employment opportunities should be created to lessen the negative impact of rapid urbanization. Private investments should be encouraged in order to effectively utilize natural resources and create more job opportunities. For example by exploiting natural resources optimally and promoting tourism, more job opportunities can be created for the urban population. In order to encourage job creation, subsidies and grants should be provided to foreign and private investment in environment-friendly development projects.
  4. Population control : The government at the local level in urban areas must provide medical health clinics and family planning centers to help reduce the high rates of population growth. Effective medical counselling and campaigns directed towards health care and hygiene and family planning options must be provided across the entire urban area with the sole purpose of controlling diseases and population growth.

Question 4.
Elaborate the features of a satellite city.
Answer:
Satellite cities are smaller cities close to a larger or main city but are independent of them. Some of the features of a satellite city are :

  1. It is smaller than the main city and is located nearby.
  2. Satellite towns or cities are socially and economically independent, either completely or partially.
  3. Being physically separated front the metropolis by a wide corridor of rural land or a green belt or even a river, satellite cities develop their own urbanized area in the course of time.
  4. Satellite towns or cities are connected to the metropolis by trains and motorways.
  5. Many satellite towns or cities do not encourage the setting up of high pollution generating industries and factories.
  6. Satellite towns and cities encourage development of small- scale industries such as dairy farms, cottage industries, handicraft industries, jam factories, etc.
  7. Satellite cities are mostly ‘bedroom communities’ or residential areas. People go to work in the main city and return to their homes in the satellite cities.
  8. Satellite cities set up the their own municipalities.
  9. Satellite cities have their own museums, art galleries, theatres and multiplexes.

Question 5.
What are the essential features of a Smart City ?
Answer:
Smart cities are urban regions that are highly advanced in terms of overall infrastructure. The IT (information technology) is the core basis of providing essential services to all residents. Other essential infrastructure, apart from IT in a smart city, includes —

  1. proper sanitation and waste management systems
  2. round the clock electricity supply
  3. round the clock and adequate water supply
  4. efficient urban mobility and public transport with a network of good, well-connected roads
  5. well-designed and affordable housing which even people in the low-income brackets can buy
  6. good governance, particularly e-governance where everything and everyone is connected digitally
  7. sustainable environment with more than adequate green cover
  8. safety and security of women, children and the elderly
  9. quick and efficient functioning of law enforcement officials
  10. adequate health centers and nursing homes
  11. good schools equipped with the latest teaching aids and smart classes.

Question 6.
Why is there a need to build a Smart City ?
Answer:
The main purpose of a smart city is to improve the quality of life of the people by harnessing information technology and to push economic growth. Also, smart cities encourage area- based development by transforming existing areas, including slums, into better planned places so that people can live happily and comfortably. New areas are identified so that more people can be accommodated in the future.

F. Picture study
ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 5
This is the picture of a smart city.

Question 1.
What is a smart city?
Answer:
A smart city is an urban region which is highly advanced in terms of overall infrastructure, sustainable real estate, communications and market viability.

Question 2.
Mention any three essential infrastructure requirement of a smart city.
Answer:
In a smart city, information technology (IT) is the core infrastructure and the basis of providing essential services to- all residents. Other essential infrastructure, apart from IT in a smart city, would include :

  1. Proper sanitation and waste management systems.
  2. Round the clock electricity supply.
  3. Round the clock and adequate water supply.
  4. Efficient urban mobility and public transport with a network of good, well-connected roads.
  5. Well-designed and affordable housing which even people in the low-income brackets can buy.
  6. Good governance, particularly e-governance where everything and everyone is connected digitally.
  7. Sustainable environment with more than adequate green cover.

G Map work
On an outline map of the world mark any ten smart cities of the world.
Answer:
ICSE Solutions for Class 8 Geography Voyage Chapter 4 Urbanization 6

Extra Questions

Question 1.
What are slums ? How do they effect the cities ?
Answer:
Slums are urban areas that are heavily populated with poor housing and living conditions. They have the following effect on cities :

  1. Since slums are usually located on land not owned by the slum dwellers, they can be easily evicted (thrown out) from their houses by the owners.
  2. Growth of slums in urban areas puts pressure on essential utilities such as clean drinking water, sanitation, power, etc.
  3. Overcrowding in slums lead to the outbreak of diseases such as malaria and dengue.
  4. Crimes begin to increase in slum areas due to unemployment and poverty. It makes difficult to enforce law and order in the city.

Question 2.
According to 2011 Census, what is the urban population of India ?
Answer:
According to Census 2011, 377.1 million people live in urban areas in India which is nearly 31 per cent of the country’s total population.

Question 3.
Give some examples of satellite cities in India.
Answer:
Main City :

  • New Delhi
  • Mumbai
  • Kolkata
  • Hyderabad
  • Pune

Satellite City :

  • Gurugram, Noida
  • Navi Mumbai, Thane
  • Rajarhat, Salt Lake City
  • Hi tech City
  • Pimpri- Chinchwad.

Question 4.
Give the names of few cities which have been selected under Smart Cities Mission in India ?
Answer:
In India 60 cities have been selected as ‘Smart Cities’ as part of the Smart Cities Mission. It includes Bhubaneswar, Jaipur, Surat, Pune, Lucknow, Chandigarh, Hyderabad, Vadodara, Kochi, Visakhapatnam, Guwahati, Raipur, Bilaspur, Durgapur, Indore, Gwalior, Rourkela, Jabalpur and Bhopal.

5. Fill in the blanks

  1. In India 31% people live in urban areas.
  2. Thousands of youth having good knowledge of the English language are hired at call centers across the country.
  3. Urbanization provides people the opportunity to acquire training and work experience in hi-tech industries.
  4. Slums are urban areas that are heavily populated with poor housing and living conditions.
  5. Urbanization leads to creation of slums.
  6. Overcrowding in slums leads to the outbreak of diseases such as malaria and dengue.
  7. A rise in air pollution leads to rise in allergies and respiratory diseases.
  8. Satellite cities are mostly ‘bedroom communities’ or residential areas.
  9. Increase in the number of motor vehicles over the years has led to a huge increase in air pollution in New Delhi.
  10. In smart cities, information technology (IT) is the core infrastructure and the basis of providing essential services to all residents.
  11. In India 60 cities have already been selected as ‘Smart Cities’.
  12. Smart cities are urban regions that are highly advanced in terms of overall infrastructure.
  13. Urbanization is the process in which more and more people j start to live and work in towns and cities rather than villages.

 

Selina Concise Physics Class 6 ICSE Solutions – Light

Selina Concise Physics Class 6 ICSE Solutions – Light

ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions

APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 6 Physics. You can download the Selina Concise Physics ICSE Solutions for Class 6 with Free PDF download option. Selina Publishers Concise Physics for Class 6 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines.

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Selina Concise ICSE Solutions for Class 6 Physics Chapter 5 Light

  • Synposis
  • Light itself is not visible, but in the presence of light other objects become visible A.
  • Light is defined as the external physical cause that affects the eye to produce the sensation of vision.
  • Two types of sources of light are:
    (1) Natural sources such as sun, stars andjugnu.
    (2) Artificial sources such as fire, electric lamp, electric tube light, a burning candle, a kerosene lamps heated bodies, etc.
  • The bodies which themselves emit light are called luminous bodies. Examples: torch, electric lamps electric tube light, burning candle, kerosene lamp, sun, stars. Jugnu etc.
  • The bodies which do not emit light by their own, but they become visible because of the light falling on them from a luminous body, are called non-luminous bodies. Examples: moon, earth, table, book, chair etc.
  • A medium which allows the passage of light through it easily, is called a transparent medium. Examples: glass, air, water etc.
  • A medium which allows only a small amount oflight to pass through it, is called a translucent medium. Examples: ground glass, tracing paper etc.
  • A medium which does not allow anydight to pass tough it, is called an opaque medium. Examples: wood, metals etc.
  • Light travels in a straight line path. This is called the rectilinear propagation oflight.
  • The pin hole camera is a simple application of the rectilinear propa – gation oflight.
  • The image (or picture) formed in a pin hole camera is upside down (i.e. inverted). On increasing the distance of screen from the pin hole, the size of image increases.
  • The shadow of an opaque object is the dark patch obtained on the screen when that opaque object is placed in the path of light.
  • Shadow is formed because light travels in a straight line path.
  • The shadow is similar to the shape of the object.
  • The part of the shadow where no light reaches from the source is completely dark and is called the umbra.
  • The part of the shadow where light reaches from only a portion of the source is partially dark and is called the penumbra.
  • There is only umbra in the shadow of an opaque object due to a point source. The umbra is bigger in size than that of the obj ect. The umbra increases in size if the screen is moved away from the object.
  • The shadow of an object due to a light source smaller than the object contains an umbra surrounded by a penumbra. The umbra is bigger in size than that of the object. Both the umbra and penum¬bra increase in size as the screen is moved away from the source.
  • The shadow of an opaque object due to a light source bigger than the object contains an umbra (which is much smaller in size than the object) surrounded by a penumbra. The umbra diminishes while the penumbra increases in size if the screen is moved away from the object.
  • Lunar and solar eclipses are the examples of formation of shadows in nature.
  • A lunar eclipse is caused on a certain full moon night when the earth comes in between the sun and the moon so that the earth casts its shadow on the moon.
  • A solar eclipse is caused on a certain new moon’s day when the moon comes in between the sun and the earth so that the moon casts its shadow

Test yourself

A. Short Answer Questions

1. Write true or false for each statement

(a) The moon is a natural source of light.
Answer. False

(b) The moon is self luminous.
Answer. False

(c) We can see an object through an opaque medium.
Answer. False

(d) Light passes through glass.
Answer. True

(e) Light travels in a straight line path. .
Answer. True

(f) Image formed in a pin hole camera is real.
Answer. True

(g) The image in a pin hole camera gets blurred if the hole is made bigger.
Answer. True

(h) A shadow is formed because light travels in a straight line path.
Answer. True

(i) Solar eclipse occurs when the sun comes in between the earth and the moon.
Answer. False

(j) If the shadow of earth falls on the moon, the eclipse is called the lunar eclipse.
Answer. True

2. Fill in the blanks

(a) Light gives us the sensation of vision.
(b) The sun is a natural source of light.
(c) A medium through which light cannot pass is called the opaque medium.
(d) A medium which allows light to pass through it easily is called the transparent medium.
(e) Moon is a non-luminous body.
(f) Light travels in a straight line path.
(g) In a pin hole camera, the image formed is inverted and real.
(h) The darkest portion of a shadow is called the umbra.
(i) The less dark portion of a shadow is called the penumbra.
(j) Lunar eclipse occurs when the earth comes in between the moon and the sun.

3. Match the following columns
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 1
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 2

4. Select the correct alternative

(i) The natural source of light is

  1. candle flame
  2. electric lamp
  3. sun
  4. kerosene lamp

(ii) The formation of inverted image in a pin hole camera shows that

  1. light enables us to see
  2. light travels in a straight line path
  3. light can pass through the pin hole
  4. light does not pass through the pin hole

(iii) The luminous body is

  1. a lighted bulb
  2. earth
  3. noon
  4. table

(iv) Umbra is a region of

  1. complete darkness
  2. partial darkness
  3. complete brightness
  4. partial brightness

(v) Penumbra is a region of

  1. complete darkness
  2. complete brightness
  3. partial brightness
  4. none of the above

(vi) Solar eclipse occurs on

  1. every new moon’s day
  2. certain new moon’s day
  3. every full moon’s day
  4. certain full moon’s day

(vii) Lunar eclipse occurs on

  1. every full moon’s night
  2. certain full moon’s night
  3. every new moon’s day
  4. certain new moon’s day

B. Short/Long Answer Questions

Question 1.
What is light ? Define it.
Answer:
Light is a form of Energy i. e. The external physical cause that affects our eye to produce the sensation of vision.

Question 2.
How does light make an object visible ?
Answer:
An object becomes visible to us when the light after striking the object reaches our eyes. Light itself is not visible, but light makes objects visible to us.

Question 3.
Name two natural sources of light.
Answer:
Sun, stars,jugnu, firefly.

Question 4.
List two artificial sources of light.
Answer:
Electric bulb, torch, an oil lamp, fluorescent tube, candle.

Question 5.
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
Answer:
Difference Between
Luminous
The bodies which have light of their own e.g. sun stars, bulb, candle, oil lamp, torch, a lantern.
Non-Luminous
The bodies-which do not have their own Iight.e.g. moon, chair, table. When light falls on them, they become visible.

Question 6.
Is the moon a luminous object ?
Answer:
Moon is not a luminous body, it is nbn-luminous body. It has no light of its own.

Question 7.
What do we call a body that shmes on its own ?
Answer:
The bodies that shines onits ownor whichthemselves emittheir own light are called the luminous bodies.

Question 8.
What do we call an electric bulb producing light ?
Answer:
Luminous object.

Question 9.
What is a transparent medium ? Give two examples.
Answer:
Amedium which allows the passage of light through it easily,is called a transparent medium.
Examples: glass, air, water etc.

Question 10.
Explain the difference between a transparent, a translucent and an opaque medium. Give two examples of each.
Answer:

  1. Transparent objects — Those objects through which light can pass easily are called transparent obj ects. e.g. Water, glass, air.
  2. Translucent object— The ohj ect through which light can pass partially are called translucent object, e.g. tracing paper, waxed paper.
  3. Opaque object— The objects which do not allow the light to pass through are called opaque objects, e.g. wood.

Question 11.
What do we call a substance through which we cannot see light ? Give an example of such a substance.
Answer:
A substance through which we cannot see light is called an opaque medium.
Examples:  Wood, metals, butter paper and black paper etc.

Question 12.
What do we call a substance through which light passes ? Give an example of such a substance.
Answer:
A substance through which light passes is called a transparent substance.
Examples: glass, air, water etc.

Question 13.
Can a transparent medium form an image ? Explain your answer.
Answer:
No, a transparent medium cannot form image. All the light that passes through a transparent medium completely pass through the substance. For the formation of image it is must that the light rays get reflected through the surface.

Question 14.
How can you obtain a point source of light ?
Answer:
A point source of light is obtained either by placing a screen having a fine hole, in front of die luminous body or by placing the luminous body inside a box having a fine hole on one of its side.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 3

Question 15.
Define the terms : a ray of light and a beam of light.
Answer:
The light travelling in any one direction in a straight line is called a ray of light.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 4
A group of light rays given out from a source is called a beam of light
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 5

Question 16.
What do you mean by ‘rectilinear propagation of light’ ?
Answer:
Light travels in a straight line path. This is called the rectilinear propagation of light.

Question 17.
Describe an experiment to show that light travels in a straight line path.
Answer:
Take three cardboards A, B and C each about 25 cm square. Take a pin and make a small hole in each cardboard at the same height. Suspend the cardboard pieces by separate threads vertically from a support such that each hole is at the same height, as shown. Pass a string through the holes and pull it taut. This makes the three holes in a straight line. Now take out the string.
Place a lighted candle near one of the cardboards (say A). Look at the candle flame from the other side of the cardboard C. The candle flame is clearly seen.
Now slightly displace one of the cardboards (say B) so that the holes no longer remain in a straight line. Again look at the candle flame from the other side of the cardboard C. You do not see the candle flame. The reason is that light travels in a straight line and now the holes in the cardboards A, B and C are not in a straight line.
Conclusion: Light travels in a straight line path called the rectilinear propagation of light.

Question 18.
In which of the following two arrangements (a) and (b) shown in the diagram, you can see the light of the bulb ? Explain Your answer
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 6
Answer:
We can see the light of the bulb in the arrangement (a).
This is so because in arrangement ‘a’ the rod is straight and light travels in a straight line path.
Whereas in arrangement ‘b’ the rod is bent. So the light cannot pass through it.

Question 19.
Name a simple application of the rectilinear propagation of light
Answer:
The simple applications of rectilinear propagation of light are pin hole camera, formation of shadows and elipses.

Question 20.
What is a pin hole camera ? Draw a neat and labelled diagram to show the formation of image of a lighted candle by it.
Answer:
The pin hole camera is a simple application of the rectilinear propagation of light.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 7

Question 21.
Explain the formation of image of a luminous object in a pin hole camera with the aid of a neat diagram.
Answer:
When a luminous object AB, such as a lighted candle, is placed in front of the pin hole, an inverted picture A’ B’ of the candle is
obtained on the tracing paper. This picture A’ B’ is called the image. The image obtained is upside down (i. e. inverted). The reason is that the light travels in a straight line path. Hence light from the upper point A of the candle passes through the pin hole and strikes
the tracing paper at A’. Similarly, light from the lower point B of the candle passes through the pin hole and strikes the tracing paper
(or screen) at B’. Light from all the other points between A and B, on passing through the pin hole strikes the tracing paper in between
A’ and B’. As a result, an inverted image of the candle is seen on the tracing paper Fig shows the simple ray diagram for die formation of image.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 8

Question 22.
State two factors which affect the size of image formed in a pin hole camera.
Answer:
Factors affecting the size of the image :
The size of image depends on the following two factors:

  1. The distance of screen (i.e. tracing paper) from the pin hole, and
  2. The distance of obj ect (i.e. candle) in front of the pin hole.

Question 23.
Is the image obtained in a pin hole camera erect or inverted ? Give reason for your answer.
Answer:
Image obtained in a pin hole camera is inverted.
The reason is that the light travels in a straight line path. Hence light from the upper point of the candle passes through the pin hole and strikes the tracing paper in the lower point. Similarly light from the lower point of the candle passes through the pin hole and strikes the tracing paper at the upper point.

Question 24.
How is the image affected in a pin hole camera when another fine hole is made near the first pin hole ?
Answer:
If another pin hole is made near the first pin hole, two images are formed on the screen, one due to each of the two pin holes. If the holes are very close, the two images tend to overlap each other. As a result, a blurred image will be seen.

Question 25.
State the effect on the image in a pin hole camera if

  1. The hole is made bigger.
  2. The luminous object is moved towards the pin hole.
  3. The length of the pin hole camera is increased (le. the screen is moved away from the pin hole).

Answer:

  1. If the hole is bigger than a pin hole, again a blurred image in seen. The reason is that a bigger hole is equivalent to a large number of pinholes. Each pin hole produces one image. These images overlap each other resulting in a blurred image.
  2. If the object is moved towards the pin hole the size of the image increases.
    The size of image / The size of object = Distance of screen from pin hole / Distance of object from pin hole
  3. When the length of the pin hole camera is increased. C is the screen is moved away from the pinhole, the size of image also increases.

Question 26.
What is a shadow ? Give a reason for its formation.
Answer:
Shadow : When light falls on an opaque object, light is obstructed and a dark patch on a screen kept behind is called shadow. This is because light propagates in straight line. If distance between obj ect and screen is less, the shad o w will be (umbra) dark and smaller.
If the distance is increased shadow will be dim and larger.

Question 27.
Draw a ray diagram to show the formation of shadow of an opaque object by a point source of light. How is the size of shadow affected if the screen is moved away from the object?
Answer:
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 9
If we move the screen away from the object, the shadow increases in size.

Question 28.
State two differences between an umbra and a penumbra.
Answer:
Umbra

  1. It is the portion of shadow where no light reaches from the source of light due to the opaque object.
  2. It is completely dark.

Penumbra
It is the portion of shadow where a portion of light from the source of light reaches the shadow even in the presence of the opaque object in between them.
It is not completely dark, but is dim (or less bright).

Question 29.
Draw a ray diagram to show the formation of umbra alone.
Answer:
Formation of umbra alone.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 10

Question 30.
Draw a ray diagram to show the formation of umbra and penumbra both. Label the parts umbra and penumbra in your diagram.
Answer:
If your move the screen away from the object, the shadow increases in size. Formation of umbra and penumbra both.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 11

Question 31.
In each of the following diagrams, draw rays to form umbra and penumbra on the screen.
(a)

Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 12
(b)

Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 13
Answer:
(a)A’B’—umbra
Umbra alone is obtained on the screen when the opaque object is illuminated by a point source of light.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 14
(b)
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 15
EF is Penumbra CD is umbra.

Question 32.
State the conditions when only the penumbra of an opaque object is obtained on the screen.
Answer:
If the size of source of light is bigger than the size of the opaque object, the size of umbra is very small. If the screen is moved away from the object, the umbra vanishes and only the penumbra remains.

Question 33.
Why is it that the birds flying in the sky do not cast their shadow on the earth ?
Answer:
We do not see the shadow of a bird flying high up in air because in their shadow, the umbra is absent and the penumbra is too large and too faint that it is not visible as the distance of screen (i.e. earth) is very large from the object (i.e. bird).

Question 34.
Why are shadows at noon shorter than in the morning or in the evening ?
Answer:
At noon the sun is directly overhead. So, the sun rays fall vertically on the body. Hence the shadow is very short. In the morning and evenings, the sun rays fall in an inclined position. So, the shadows are long.

Question 35.
What is an eclipse ? Name the two types of eclipses.
Answer:
Eclipses are the examples of formation of shadows in nature. There are two kinds of eclipses:

  1. Lunar eclipse (the eclipse of the moon), and
  2. Solar eclipse (the eclipse of the sun).
    Lunar eclipse is due to the formation of shadow of earth on moon and solar eclipse is due to the formation of shadow of moon on earth.

Question 36.
When does a lunar eclipse take place ? Does it occur on every full moon’s night ?
Answer:
A lunar eclipse occurs when the earth comes in between the sun and moon and casts its shadow on moon. On a full moon night, the moon rises in the east after sun sets in the west. On such a night, the sun and moon are on the opposite sides of the earth. The shadow of the earth falls on the surface of the moon therefore moon is not visible to us. This is lunar eclipse as shown in the figure.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 16

Question 37.
Draw a diagram to show the formation of lunar eclipse.
Answer:
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 17

Question 38.
When does a solar eclipse take place ? Does it occur on even’ new moon’s day ?
Answer:
Solar eclipse— On a certain moon’s day the moon, happens to come in between the sun and the earth. They come in a straight line. In such a situation, the moon being smaller in size casts its shadow only on a limited region on the earth. In these regions of the earth, the solar eclipse occurs.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 18

Question 39.
Draw a diagram to show the formation of solar eclipse.
Answer:
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 19

Question 40.
What is annular solar eclipse ? Draw a labelled diagram to show its formation.
Answer:
An annular solar eclipse occurs when only the tip of the umbra of the moon falls on the earth. From the point D, the sun will appear to be completely obstructed by the moon, only the outer rim of the sun, called corona, is then visible for a very short time which is known as the diamond ring. The formati on of annular solar eclipse is shown below.
Selina Concise Physics Class 6 ICSE Solutions Chapter 5 Light 20

ICSE Solutions for Class 7 Geography Voyage – Australia: Climate, Natural Vegetation, Wildlife; Forest and Minerals

ICSE Solutions for Class 7 Geography Voyage – Australia: Climate, Natural Vegetation, Wildlife; Forest and Minerals

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APlusTopper.com provides step by step solutions for ICSE Solutions for Class 7 Geography Voyage. You can download the Voyage Geography ICSE Solutions for Class 7 with Free PDF download option. Geography Voyage for Class 7 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines.

ICSE Solutions Class 7 Geography History & CivicsMathsPhysicsChemistryBiology

DISCUSS

Discuss the roie of the Eastern Highlands in the climate of Australia.
Answer:
Eastern Highlands block the rain-bearing winds ; as a result, most of Western Australia is a desert.

THINK AND ANSWER

Why do we not find marsupials like kangaroo and wombat in other parts of the world ?
Answer:
Marsupials like kangaroo and wombat are not found because the continent separated from the main land mass about 200 million years ago. As a result, its animal life evolved quite differently from that of the rest of the world.

EXERCISES

A. Match the columns

ICSE Solutions for Class 7 Geography Voyage Chapter 17 Australia Climate, Natural Vegetation, Wildlife Forest and Minerals 1

Answer:

ICSE Solutions for Class 7 Geography Voyage Chapter 17 Australia Climate, Natural Vegetation, Wildlife Forest and Minerals 2

ICSE Solutions for Class 7 Geography Voyage Chapter 17 Australia Climate, Natural Vegetation, Wildlife Forest and Minerals 3

B. Identify who I am.

Question 1.
i am an animal that lives entirely on the juicy leaves of the gum tree.
Answer:
Koala

Question 2.
I am a wild dog found in Australia.
Answer:
Dingo

Question 3.
I am a mammal that lays eggs.
Answer:
Platypus

Question 4.
I am a big Australian bird but I cannot fly.
Answer:
Emu

Question 5.
I have a beautiful fan-tail and I can mimic very well.
Answer:
Cassowary

Question 6.
I am a male bird who likes to attract female birds by building intricate and decorative nests.
Answer:
Bower

Question 7.
I am popularly called the ‘laughing jackass’.
Answer:
Kookaburra

C. Answer the following questions in brief.

Question 1.
Name the winds that bring rainfall to Australia.
Answer:
The South-East Trade Winds blow onshore and bring heavy rainfall to the east coast. The Westerlies bring rainfall in winter to south-west and south-east Australia. The north-west monsoon winds cause rainfall over northern Australia.

Question 2.
What is the name of the temperate grassland in Australia?
Answer:
The temperate grasslands of Australia are called the downs.

Question 3.
What kind of natural vegetation can be seen in the desert regions of Australia ?
Answer:
Natural vegetation in the desert are cactus, spinifex, and acacia (locally called wattle).

Question 4.
Why is the wildlife of Australia considered unique in comparison to other countries ?
Answer:
The wildlife of Australia is unique. The continent separated from the main land mass about 200 million years ago. As a result, its animal life evolved quite differently from that of the rest of the world.
Among the unique animals found here are marsupials are— mammals that carry their young ones in a pouch formed by a fold of skin near the stomach. The pouches contain the mammary glands.

Question 5.
The platypus is considered a strange animal. Why ?
Answer:
The platypus is considered a strange animal because they lay eggs but suckle their young ones. The platypus is an aquatic, furred mammal with a bill like that of a duck and poisonous spurs on its hindlegs.

D. Answer the following questions in one or two paragraphs.

Question 1.
Name the factors that influence the climate of Australia. Elaborate any two.
Answer:
The factors that influence the climate of Australia are its location, land features, direction of mountain ranges, winds and distance from the sea.

Location — The northern part lies in the tropics, so it is either warm or hot all the year round. The rest of the continent lies south of the Tropic of Capricorn and, as a result, has warm summers and mild or cool winters.
Land Features — The east coast gets heavy rainfall from the South-east Trade Winds, which steadily decreases westward, owing to the presence of the Eastern Highlands that form a barrier for the rain-bearing winds.
Direction ofMountain Ranges — If the Great Dividing Range did not lie in a north-south direction, Western Australia would not have been a desert.
Winds — The South-East Trade Winds blow onshore and bring heavy rainfall to the east coast. The Westerlies bring rainfall in winter to south-west and south-east Australia. The north-west monsoon winds cause rainfall over northern Australia.

Question 2.
The Western Plateau region of Australia is mainly a desert. Why ?
Answer:
The presence of the Eastern Highlands causes heavy rains along the eastern coast and rainfall decreases westwards, away from the coast. So, most of central and western Australia has high temperatures and very little rainfall resulting in the formation of a desert.

Question 3.
Briefly describe the climate and vegetation of the south-eastern and south-western coasts of Australia.
Answer:
The presence of the Eastern Highlands causes heavy rains along the eastern coast and rainfall decreases westwards, away from the coast. So, most of central and western Australia has high temperatures and very little rainfall resulting in the formation of a desert.
South-eastern and south-western parts which experience rain in winter from the onshore Westerlies. Winter condition prevail from April to September in this reason.
The temperate forests are found in the south-eastern and south¬western parts of Australia and in Tasmania. Eucalyptus (locally called eucalypt or gum tree) is the main tree of these forests. There are over 900 species of eucalyptus tree found in Australia. This tree does not shed its leaves, but the bark peels off and is replaced by new white or light coloured bark. Eucalyptus trees dominate the landscape of Australia.

Question 4.
What are marsupials ? Describe any one marsupial.
Answer:
Marsupials are — mammals that carry their young ones in a pouch formed by a fold of skin near the stomach. The pouches contain the mammary glands. Australia has about 150 species of marsupials that vary in size, from the giant kangaroo over two metres in height to the tiny insect-eating bandicoot. The wallaby, wombat, and koala are other examples of marsupials found in Australia.

Question 5.
What are monotremes ? Give examples.
Answer:
The platypus and echidna are the only living monotremes, i.e., they lay eggs but suckle their young ones. The platypus is an aquatic, furred mammal with a bill like that of a duck and poisonous spurs on its hindlegs.The echidna is also known as the spiny anteater.

E. Map work
Study the map given here and answer the questions (lines indicate the different climatic regions) : (On Textbook page 149)

Question 1.
Describe the vegetation of region C.
Answer:
Temperate Grassland

Question 2.
What are the most outsanding characteristics of the climate of region B ?
Answer:
Tropical Monsoon

Question 3.
On the map, draw the South-East Trade Winds with red
Answer:
arrows.
ICSE Solutions for Class 7 Geography Voyage Chapter 17 Australia Climate, Natural Vegetation, Wildlife Forest and Minerals 4

Question 4.
By what name are the temperate grasslands known in the Murray-Darling Basin ?
Write the name in the appropriate place on the map.
Answer:
The temperate grasslands of Australia are called the downs.

F. Picture study
This is a photograph of an eucalyptus tree, a common tree found in Australia. There are over 900 species of this tree in Australia.

ICSE Solutions for Class 7 Geography Voyage Chapter 17 Australia Climate, Natural Vegetation, Wildlife Forest and Minerals 5

Question 1.
What is the local name of this tree?
Answer:
Eucalypt

Question 2.
Which animal survivies by eating the leaves of this tree?
Answer:
The koala is the most popular Australian animal. This tree dweller is only about 76 cm high and lives entirely on the sjuicy leaves of the eucalyptus tree.

ICSE Solutions for Class 7 History and Civics – The Turkish Invaders

ICSE Solutions for Class 7 History and Civics – The Turkish Invaders

ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions

APlusTopper.com provides step by step solutions for ICSE Solutions for Class 7 History and Civics. You can download the History and Civics ICSE Solutions for Class 7 with Free PDF download option. History and Civics for Class 7 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines.

ICSE Solutions Class 7 History & CivicsGeographyMathsPhysicsChemistryBiology

Important Words

  • Ghazni and Ghor were the two important states established by the Turks.
  • Sultans were the rulers of the Delhi Sultanate who ruled from Delhi, their capital city.
  • Shahnama was written by the Persian poet Firdausi. It is the biography of Sultan Mahmud of Ghazni.
  • Lakhbaksh means ‘giver of lakhs’. Qutbuddin Aibak was given this name because of his generosity.
  • Muezzin is a man who calls Muslims to prayer, usually from the tower of a mosque.
  • Iqtas were the provinces into which the empire was divided. Each was administered by an officer called the
  • Divine kingship means that the king is considered a representative of God on earth.

Time To Learn
I. Fill in the blanks:

  1. Mahmud Ghazni invaded India to 17 times its wealth.
  2. Muhammad Ghori defeated Prithviraj in the second battle of Tarain.
  3. Alberuni, spent 10 years in India and wrote a book Kitab- ul-Hind.
  4. Firdausi wrote a famous epic named Shahnama.
  5. Mahmud Ghazni plundered Somnath temple in 1025 AD

II. Match Column A with Column B:
ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 1

Answer:

      Column A                                                     Column B
ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 2

III. State whether the following statements are True or False:

  1. Muhammad Ghori established the Muslim rule in India.
    True
  2. Mahmud was interested in setting up an empire in India.
    False.  
    Mahmud was interested in wealth rather than setting up an empire in India.
  3. The Rajputs united to face the Turks or Muslims but failed.
    False.
  4. Jaichand defeated Muhammad Ghori.
    False.Jaichand was defeated by Muhammad Ghori.
  5. Firdausi wrote Kitab-ul-Hind.
    FalseAlberuni wrote Kitab-ul-Hind.

IV. Answer the following questions briefly:

Question 1.
Mention three most important invasions of Mahmud of Ghazni.
Answer:
The important invasions of Mahmud of Ghazni were:

  1. Mahmud of Ghazni raided India for the first time in 1000 AD. After that, he is said to have conquered India 17 times, till his death. He was resisted by King Jaipal and then by his son Anandpal but both of them were defeated.
  2. Between 1009 AD and 1026 AD, the places that Mahmud of Ghazni invaded were Kabul, Delhi, Kanauj, Mathura, Kangra, Thaneshwar, Kashmir, Gwalior, Malwa, Bundelkhand, Tripuri, Bengal and Punjab.
  3. In 1027 AD, he invaded the Somnath temple in Gujarat, on the coast of Saurashtra or Kathiwar. This was supposed to be his biggest invasion as he had looted all treasures and precious items of the fortified temple.

Question 2.
When and between whom were the Battles of Tarain fought?
Answer:
The battles of Tarain were fought between Ghori and Prithviraj in the year 1191 i.e. The First Battle of Tarain in which Ghori was defeated by Prithviraj, and second in the year 1192 i.e. The Second Battle of Tarain in which Ghori won the battle.

Question 3.
How were the raids of Mahmud Ghazni different from the raids of Muhammad Ghori?
Answer:
During the thirty-three years of his reign, Mahmud Ghazni carried out seventeen raids on India. He was interested in wealth rather than setting up an empire in the Indian subcontinent.
After 150 years of Mahmud’s invasions Muhammad of Ghor (hence called Ghori) attacked India. This laid the foundation of Turko-Afghan rule in India. At the time of his invasion five Rajput kingdoms were in power. They were the Rathors of Kanauj, Solankis of Gujarat, Chandelas of Bundelkhand, Parmars of Malwa and Chauhans of Delhi and Ajmer. Muhammad first captured Multan in AD 1175 and then moved on to Gujarat. He defeated the Solankis there. He also captured Punjab, Peshawar and Sialkot.Hence, Muhammad of Ghori was interested in setting up an empire in the Indian Subcontinent.

V. Give Reason why:

Question 1.
Mahmud of Ghazni attacked India
Answer:
Mahmud of Ghazni attached India as he was in wealth rather than setting up an empire in the Indian subcontinent.

Question 2.
Turks succeeded against Rajputs
Answer:

  1. The Rajputs were brave soldiers and skilled swordsmen. But they suffered defeat after defeat. The reasons for their defeat or, in other words, causes for Muslim success were the following:
  2. The Rajputs lacked unity. They were always fighting with each other. Prithviraj Chauhan and Jaichand could not unite against Muhammad Ghori.
  3. Rajput chiefs were jealous of each other.
  4. The Rajputs had no standing army of their own, and hence had to depend on the feudal lords for contingents.
  5. The Rajputs were no match for the quick and swift army and cavalry of the Central Asian warriors.

VI. Guess who it is:

  1. wrote a book Kitab-ul-Hind.
    Ans. Alberuni.
  2. First Turkish invader to enter India north-west side.
    Ans. Mahumd of Ghazni.
  3. Beautified his city the most beautiful one, with the wealth gained in India.
    Ans. Mahmud of Ghazni.
  4. Laid the foundation of Turkish rule in India.
    Ans. Muhammad Ghori.
  5. Invaded India 17 times.
    Ans. Mahmud of Ghazni.

ADDITIONAL QUESTIONS
(THE TURKISH INVADERS)

A. Fill in the blanks:

  1. Mahmud of Ghazni invaded India seventeen times in the course of twenty five years
  2. Mahmud’s raids exposed the weakness of the northern states and paved the way for the conquest of India.
  3. Qutbuddin Aibak took control of Muhammad Ghori’s Indian possessions and laid the foundation of the Delhi Sultanate.
  4.  Iltutmish defeated the Rajput rulers of Ujjain, Ranthambore, Malwa, and Gwalior and brought the whole of North India upto the river Narmada under his control.
  5. The Caliph of Baghdad recognized Iltutmish as the sovereign of India. He was succeeded by his daughter Razia.

B. Match the following:

ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 3

ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 4
Answer:
ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 5

C. Choose the correct answer:

  1. Mahmud of Ghazni was a powerful/weak/inefficient
    Ans. Mahmud of Ghazni was a powerful ruler.
  2. Mahmud of Ghazni was interested in territorial expansion in South Asia/Central Asia/West Asia.
    Ans. Mahmud of Ghazni was interested in territorial expansion in Central Asia.       –
  3. Firdausi was a great mathematician/historian/poet.
    Ans. Firdausi was a great poet.
  4. Nasiruddin Mahmud was a weak and inexperienced ruler and the affairs of the state were managed by in India.
    False.
    Correct: Muhammad Ghori was the founder of the Turkish rule in India.
  5. Muhammad Ghori was as great a military leader as Mahmud of Ghazni.
    False.
    Muhammad Ghori was not as great a military leader as Mahmud of Ghazni.
  6. BaIbaflJJftugmLçJ,q?qj Sultan on his behalf.
    Ans. Nasiruddin Mahmud was a weak and inexperienced rulerand the affairs of the state were managed by Balban on his behalf.
  7. ¡llutntish/Qu(buddj,, Aibak/Balban never smiled or allowed others to laugh or joke in his court.
    Ans. Balban never smiled or allowed others to laugh or joke in his court.

D. State whether the following are true or false

  1. The kingdoms of Ghazni and (Thor were established by the Abbasids.
    False. Correct: The kingdoms of (ihazni and Ghor were established by the Turks.
  2. During Mahmud’s time, North India was divided and there WaS no unity.
    True.
  3. Iltutmish failed to crush the power of the governor of Bengal.
    False.Correct:Iltutmish crush the power of the governor of Bengal.
  4. Razia Sultan was brave, intelligent and just.
    False. Correct: Razia Sultan was brave, intelligent and just woman.
  5. Balban made the monarchy weak and dependent on the nobles.
    False.Correct : l3alban made the monarchy absolute and all powerful.
  6. Sultan Mahmud annexed Punjab to create a gateway to India for future invasions.
    True.
  7. Mahmud of Ghaznj was the founder of the Turkish Ñle in India.
    False. Correct: Muhammad Ghori was the founder of the Turkish rule in India.
  8. Muhammad Ghori was as great a military leader as Mahmud of Ghazni.
    False.Corrent:Muhammad Ghori was not as great a military leader as Mahmud of Ghazni.

E. Answer the following questions in one or two words/ sentences:

Question 1.
What happened to the Abbasid Caliphate by the 9th century ce?
Answer:
By the end of the 9th century ce. The once mighty Abbasid empire disintegrated into a number of independent states ruled by the Turks who had earlier served in the armies of the Caliphs.

Question 2.
Name the author of the great epic Shahnama.
Answer:
The Persian poet Firdausi, author of the great epic Shahnama.

Question 3.
What is the significance of the defeat of Prithviraj in the Second Battle of Tarain?
Answer:
The defeat of Prithviraj marked the end of Rajput rule in North India. The kingdom of Delhi passed into the hands of Muhammad Ghori. The throne of Delhi was occupied by Muslim rulers from then till 1858.

Question 4.
Who did Muhammad Ghori appoint as his viceroy?
Answer:
Muhammad Ghori appointed Qutbuddin Aibak as his viceroy before returning to Ghor.

Question 5.
For how many years did the sultans of Delhi rule the country?
Answer:
300 years.

Question 6.
Mention one important reason for the decline of Buddhism in India after the Turkish invasion.
Answer:
Buddhist monasteries and libraries were wantonly destroyed by the Muhammad bin Bakhtiar Khilji. This invasion dealth a death blow to Buddhism in India.

Question 7.
Name the founder of the Turkish kingdom in India.
Answer:
Muhammad Ghori was founder of the Turkish kingdom in India.

Question 8.
Why was Qutbuddin known as ‘lakhbaksh’?
Answer:
Lakhbaksh means ‘giver of lakhs’. Qutbuddin Aibak was given this name because of his generosity.

Question 9.
How did Iltutmish save India from the threat of a Mongol invasion?
Answer:
Once Mongol chief, Chenghiz Khan reached the borders of India in search of the Shah of Persia who fled towards India to get shelter but Iltutmish politely refused the Mongol chief to provide refuge and in this way he saved the threat of Mongol invasion.

Question 10.
Why did Iltutmish nominate his daughter Razia as his successor?
Answer:
Iltutmish nominated his daughter Razia as his successor because his sons were inexperienced, weak and worthless ruler and they spent all their time in fun and pleasure loving things whereas Razia was a brave, intelligent and just woman. She possessed all the qualities of a great monarch.

Question 11.
Give any one example to show that Mahmud was a patron of learning.
Answer:
He was a patron of art and learning and enjoyed the company of learned scholars and poets. The Persian poet Firdausi, author of the great epic Shahnama, and the great Persian historian and mathematician A1 Beruni, were among the eminent scholars patronized by Mahmud.

Question 12.
Name the famous Rajput ruler of Delhi and Ajmer.
Answer:
Prithviraj Chauhan, the Rajput ruler of Delhi and Ajmer

Question 13.
Mention one important reason for the victory of Muhammad Ghori in the Second Battle of Tarain.
Answer:
Prithviraj organized a confederacy of Rajput chiefs to meet the challenge. Unfortunately, the most powerful Rajput ruler, Raja Jaichandra of Kanauj, refused to help him.

F. Answer the following questions briefly:

Question 1.
How did Sultan Mahmud transform his capital, Ghazni? How do we know he was a patron of art and learning?
Answer:
Sultan Mahmud transform Ghazni into a magnificent capital city. Ghazni was adorned with splendid mosques, libraries and a museum.His court glittered with sparkling pearls, rubis and diamonds. This shows that he was a patron of art and learning.

Question 2.
Discuss the (a) causes and (b) results of the First and Second Battles of Tarain.
Answer:
Muhammad Ghori wanted to envieled his kingdom with India’s wealth. He decided to conquer India.
(a) First Battles of Tarain: In 1191 ce, Ghori attacked Prithviraj Chauhan, the Rajput ruler of Delhi and Ajmer. Prithviraj inflicted a crushing defeat on Ghori in the First

Question 3.
Give any five reasons to prove that Iltutmish was a shrewd, clever and capable ruler.
Answer:

  1. The Turkish nobles who had challenged his claim to the throne were suppressed.
  2. The revolt of the Khilji governor of Bengal was crushed
  3. The power of his external rivals, the rulers of Ghazni and Multan, was destroyed.
  4. A new danger presented itself when the Mongol chief, Chenghiz Khan, reached the borders of India in pursuit ofthe Shah of Persia (Iran). The Shah had fled towards India in search of Shelter. Iltutmish politely refused to give him refuge and by doing so he saved India from the threat of the Mongol invasion.
  5. After having got rid of his enemies, Iltutmish defeated the Rajput rulers of Ujjain, Ranthambore, Malwa and Gwalior. He brought the whole of North India up to the river Narmada under his control. The Caliph of Baghdad recognized him as the sovereign of India.

Question 4.
Discuss the important developments that took place during the reign of Razia Sultan.
Answer:
The provincial governors rose in revolt against her. Razia tried to crush the revolt but was defeated and imprisoned. She won over the leader of the rebels, Altunia, by marrying him. Their attempt to recover the throne of Delhi ended in failure and both were killed in 1240 ce.

G Picture study:

This is the picture of a Turkish invader who was involved in the Battles of Tarain.
ICSE Solutions for Class 7 History and Civics - The Turkish Invaders 6

Question 1.
Identify the person in the picture.
Answer:
Muhammad Ghori.

Question 2.
Why did he invade India?
Answer:
At the end of the 12th century ce, a new kingdom based in Ghor arose in north-western Afghanistan (near Ghazni). The founder was Ghiyasuddin Ghori. His famous brother, Muizuddin Muhammad, is commonly referred to as Muhammad Ghori decided to conquer India and enrich his kingdom with India’s wealth. He first brought the frontier areas of Multan, Sind and Punjab under his control.

Question 3.
The Battles of Tarain laid the foundations of Turkish rule in North India. Do you agree? Why?
Answer:
Yes. Two years after the Second Battle of Tarain, Muhammad attacked Kanauj and killed Jaichandra. Ghori annexed the Indian territories to his empire and appointed Qutbuddin Aibak as his viceroy before returning to Ghor.

Question 4.
Explain the causes of the success of the Turkish invaders against the Rajputs.
Answer:
Prithviraj organized a confederacy of Rajput chiefs to meet the challenge. Unfortunately, the most powerful Rajput ruler, Raja Jaichandra of Kanauj, refused to help him. The two armies clashed in the Second Battle of Tarain in 1192 CE. This time, Muhammad Ghori routed the Rajput army.