{"id":42998,"date":"2022-05-27T02:00:45","date_gmt":"2022-05-26T20:30:45","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=42998"},"modified":"2023-11-09T19:08:35","modified_gmt":"2023-11-09T13:38:35","slug":"ml-aggarwal-class-7-solutions-for-icse-maths-chapter-15-objective-type-questions","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/ml-aggarwal-class-7-solutions-for-icse-maths-chapter-15-objective-type-questions\/","title":{"rendered":"ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 15 Visualising Solid Shapes Objective Type Questions"},"content":{"rendered":"
Mental Maths<\/strong><\/p>\n Question 1. Question 2. Multiple Choice Questions<\/strong><\/p>\n Choose the correct answer from the given four options (3 to 11): Question 4. Question 5. Question 6. Question 7. Question numbers 8 to 11 are based on the given figure in which unit cubes are put together to form a structure as shown:<\/strong><\/p>\n <\/p>\n Question 8. Question 9. Question 10. Question 11. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 15 Visualising Solid Shapes Objective Type Questions Mental Maths Question 1. Fill in the blanks: (i) A solid having no vertex and no edge is a ……….. (ii) A solid that has congruent and parallel polygons as top and bottom faces and all other faces rectangular … Read more<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[3034],"tags":[],"yoast_head":"\n
\nFill in the blanks:
\n(i) A solid having no vertex and no edge is a ………..
\n(ii) A solid that has congruent and parallel polygons as top and bottom faces and all other faces rectangular is known as ………
\n(iii) A pyramid having 4 equilateral triangles as its faces is known as ………
\n(iv) A solid having 3 faces (one curved and two circulars), no vertex and two curved edges are known as ……..
\n(v) A solid having a circular base and one vertex is called a ………
\n(vi) A triangular prism has ……… faces, ………… edges and ………. vertices.
\n(vii) A triangular pyramid has ……… faces, ………. edges and ……… vertices.
\n(viii) A square pyramid has ……… faces, ……….. edges and ……… vertices.
\n(ix) The base of a triangular pyramid is a ………
\n(x) Out of ……….. faces of a triangular prism, ……… are rectangle and ……….. are triangles.
\n(xi) Out of ……….. faces of a square pyramid, ………. are a triangle and ………. is\/are squares.
\n(xii) Out of ………. faces of a rectangular pyramid, ………. are triangles and the base is a ……….
\n(xiii) A ……….. is a sort of skeleton – outline in 2-D, which on folding results in a 3-D shape.
\n(xiv) If the sum of numbers on the two dice thrown together is 9, then the sum of the numbers opposite to these faces is ……….
\nSolution:
\n(i) A solid having no vertex and no edge is a sphere.
\n(ii) A solid that has congruent and parallel polygons as top and bottom faces
\nand all other faces rectangular is known as a prism.
\n(iii) A pyramid having 4 equilateral triangles as its faces is known as a tetrahedron.
\n(iv) A solid having 3 faces (one curved and two circulars),
\nno vertex and two curved edges are known as a cylinder.
\n(v) A Solis\u2019having a circular base and one vertex is called a cone.
\n(vi) A triangular prism has 5 faces, 9 edges, and 6 vertices.
\n(vii) A triangular pyramid has 4 faces, 6 edges, and 4 vertices.
\n(viii) A square pyramid has 5 faces, 8 edges, and 5 vertices.
\n(ix) The base of a triangular pyramid is a triangle.
\n(x) Out of 5 faces of a triangular prism, 3 are rectangle and 2 are triangles.
\n(xi) Out of 5 faces of a square pyramid, 4 are triangle and 1 is\/are squares.
\n(xii) Out of 5 faces of a rectangular pyramid, 4 are triangles and the base is a rectangle.
\n(xiii) A net is a sort of skeleton – outline in 2-D, which on folding results in a 3-D shape.
\n(xiv) If the sum of numbers on the two dice thrown together is 9,
\nthen the sum of the numbers opposite to these faces is 5.<\/p>\n
\nState whether the following statements are true (T) or false (F):
\n(i) The faces of a prism are triangular.
\n(ii) A cube can be treated as a prism.
\n(iii) A pyramid has only one vertex.
\n(iv) All the faces, except the base, of a square pyramid are triangular.
\n(v) A tetrahedron has 3 rectangular faces and 1 rectangle face.
\n(vi) A square pyramid has 5 faces and one vertex.
\n(vii) A cone has one vertex, two faces, and one curved edge.
\n(viii)The shadow of a 3-D object is a 2-D figure.
\n(ix) A cube can cast a shadow in the shape of a rectangle.
\n(x) A cube can cast a shadow in the shape of a hexagon.
\n(xi) In an isometric sketch, the line segments of different lengths can represent the sides of a cube.
\n(xii) In an oblique sketch of a cuboid, the size of the opposite faces must be different.
\n(xiii) The top, front and side views of a sphere are different.
\n(xiv) The adjoining net is of a hexagonal pyramid.
\n
\nSolution:
\n(i) The faces of a prism are triangular. (False)
\nCorrect:
\nFaces are rectangular.
\n(ii) A cube can be treated as a prism. (True)
\n(iii) A pyramid has only one vertex. (False)
\nCorrect:
\nIt has three or more than three.
\n(iv) All the faces, except the base, of a square pyramid are triangular. (True)
\n(v) A tetrahedron has 3 rectangular faces and 1 rectangle face. (False)
\nCorrect:
\nIt has triangular faces.
\n(vi) A square pyramid has 5 faces and one vertex. (False)
\nCorrect:
\nIt has five vertices, not one.
\n(vii) A cone has one vertex, two faces, and one curved edge. (True)
\n(viii) The shadow of a 3-D object is a 2-D figure. (True)
\n(ix) A cube can cast a shadow in the shape of a rectangle. (True)
\n(x) A cube can cast a shadow in the shape of a hexagon. (False)
\n(xi) In an isometric sketch, the line segments of different lengths
\ncan represent the sides of a cube. (False)
\nCorrect:
\nA cube has equal length.
\n(xii) In an oblique sketch of a cuboid, the size of the opposite faces
\nmust be different. (False)
\n(xiii) The top, front and side views of a sphere are different. (False)
\nCorrect:
\nAll are equal.
\n(xiv) The adjoining net is of a hexagonal pyramid. (True)<\/p>\n
\nQuestion 3.
\nA triangular prism has
\n(a) 4 vertices and 6 edges
\n(b) 6 vertices and 9 edges
\n(c) 6 vertices and 6 edges
\n(d) 9 vertices and 6 edges
\nSolution:
\nA triangular prism has 6 vertices and 9 edges. (b)<\/p>\n
\nA square pyramid has
\n(a) 4 vertices and 4 faces
\n(b) 4 vertices and 5 faces
\n(c) 5 vertices and 4 faces
\n(d) 5 vertices and 5 faces
\nSolution:
\nA square pyramid has 5 vertices and 5 faces. (d)<\/p>\n
\nA solid having 4 (plane) faces, 4 vertices and 6 edges is called a
\n(a) triangular prims
\n(b) rectangular prism
\n(c) triangular pyramid
\n(d) rectangular pyramid
\nSolution:
\nA solid having 4 (plane) faces,
\n4 vertices and 6 edges is called rectangular pyramid. (c)<\/p>\n
\nThe number of cubes in the given structure is
\n(a) 12
\n(b) 10
\n(c) 9
\n(d) 8
\n
\nSolution:
\nThe number of cubes in the given structure is 12. (a)<\/p>\n
\nAn isometric sheet is made up of dots forming
\n(a) squares
\n(b) rectangles
\n(c) right-angled triangles
\n(d) equilateral triangles
\nSolution:
\nAn isometric sheet is made up of dots
\nforming equilateral triangles. (d)<\/p>\n
\nThe number of unit cubes in the given structure is
\n(a) 13
\n(b) 20
\n(c) 21
\n(d) 22
\nSolution:
\nThe number of unit cubes in the given structure is 21. (c)<\/p>\n
\nThe number of unit cubes to be added to make a cuboid of dimensions 4 unit \u00d7 4 unit \u00d7 2 unit is
\n(a) 11
\n(b) 12
\n(c) 13
\n(d) 14
\nSolution:
\nThe number of unit cubes to be added to make a cuboid of dimensions
\n4 unit \u00d7 4 unit \u00d7 2 unit is 4 \u00d7 4 \u00d7 2 = 32 – 21 = 11 (a)<\/p>\n
\nIf the structure is painted on the surface everywhere, then the number of unit cubes having no face painted is
\n(a) 0
\n(b) 1
\n(c) 2
\n(d) 11
\nSolution:
\nIf the structure is painted on the surface everywhere,
\nthen the number of unit cubes ‘ having no face painted is 1. (b)<\/p>\n
\nThe side view of the given structure is
\n
\nSolution:
\nThe side view of the given structure is (c).<\/p>\nML Aggarwal Class 7 Solutions for ICSE Maths<\/a><\/h4>\n","protected":false},"excerpt":{"rendered":"