SEBA Class 9 Mathematics MCQ Chapter 13 Surface area and volumes Question Answer in English Medium, Class 9 General Maths Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters SEBA Class 9 Mathematics MCQ Chapter 13 Surface area and volumes Notes and select need one.
SEBA Class 9 Mathematics MCQ Chapter 13 Surface area and volumes
Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam SEBA Class 9 Mathematics MCQ Chapter 13 Surface area and volumes Solutions for All Subject, You can practice these here.
Surface area and volumes
Chapter – 13
| MCQ |
1. Or a cylinder, if r = h=7 cm., then its total surface area is:
(a) 616 cm²
(c) 176 cm²
(b) 88 cm²
(d) 512 cm²
Ans: (a) 616 cm².
2. The total surface area of a cube is 150 cm.2:
(a) 25 cm³
(b) 125 cm³
(c) 625 cm³
(d) 600 cm³
Ans: (b) 125 cm³.
3. The base radius and height of a cylinder are 7 cm. and 14 cm. respectively. Its total surface area is:
(a) 462 cm²
(b) 426 cm²
(c) 924 cm²
(d) 942 cm²
Ans: (c) 924 cm²
4. The perimeter of the floor of a room is 30 m. and its height is 4 m. Find the area of the four walls of the room.
(a) 120 m²
(b) 60 m²
(c) 240 m²
(d) 150 m²
Ans: (a) 120 m².
5. The slant height of a right circular cone is 17 cm and the radius is 8 cm. The measure of the height of the cone is:
(a) 9 cm.
(b) 15 cm.
(c) 20 cm.
(d) 25 cm.
Ans: (b) 15 cm.
6. The ratio of the surface areas of the two spheres is 16:49. The ratio of their radii is:
(a) 7:4
(b) 4:7
(c) 8:24.5
(d) 24.5:8
Ans: (b) 4:7
7. A cone is cut through a plane parallel to its base and then the cone that is on one side of that plane is removed. The new part that is left over on the other side of the plane is called:
(a) a frustum of a cone
(b) cone
(c) cylinder
(d) sphere
Ans: a frustum of a cone
8. During conversion of a solid from one shape to another, the volume of the new shape will:
(a) increase
(b) decrease
(c) remain unaltered
(d) be doubled
Ans: (c) remain unaltered
9. A right circular cylinder of radius r cm and height h cm (h>2r) just encloses a sphere of diameter:
(a) r cm
(b) 2r cm
(c) h cm
(d) 2h cm
Ans: (b) 2r cm
10. A hollow cube of internal edge 22cm is filled with spherical marbles of diameter 0.5 cm and it is assumed that 1/8th space of the cube remains unfilled. Then the number of marbles that the cube can accommodate is:
(a) 142244
(b) 142396
(c) 142496
(d) 142596
Ans: (A) 142244
11. A metallic spherical shell of internal and external diameters 4 cm and 8 cm respectively, is melted and recast into the form of a cone with base diameter 8cm. The height of the cone is:
(a) 12cm
(b) 14cm
(c) 15cm
(d) 18cm
Ans: (B) 14cm
12. A solid piece of iron in the form of a cuboid of dimensions 49cm × 33cm × 24cm, is moulded to form a solid sphere. The radius of the sphere is:
(a) 21cm
(b) 23cm
(c) 25cm
(d) 19cm
Ans: (a) 21cm
13. The ratio of the volumes of the two spheres is 1:27. The ratio of their radii:
(a) 1:3
(b) 1:9
(c) 3:1
(d) 1:27
Ans: (a) 1:3
14. The ratio of the whole surface area of a solid sphere and a solid hemisphere is:
(a) 4:3
(b) 2:3
(c) 3:4
(d) 3:1
Ans: (a) 4:3
15. The number of edges of a cube are:
(a) 6
(b) 8
(c) 12
(d) 16
Ans: (c) 12
16. The volume and curved surface area of a sphere are numerically equal. The radius of the sphere is:
1 (a) cm.
(b) 3 cm.
(c) 4 cm.
(d) 7 cm.
Ans: (b) 3 cm.
17. The edge of a cube is doubled, the ratio of the volume of the resultant cube to the volume of the original cube is:
(a) 2:1
(b) 4:1
(c) 3:1
(d) 8:1
Ans: (d) 8:1
18. If a right circular cone has radius 4 cm. and slant height 5 cm. then its volume is:
(a) 48 𝝅cm³
(b) 32 𝝅cm³
(c) 16 𝝅cm³
(d) None of these
Ans: (c) 16 𝝅cm³
19. The curved surface area of a right circular cylinder of height 14 cm. is 88 cm2 The diameter of the base is.
(a) 2 cm.
(b) 3 cm.
(c) 4 cm.
(d) 6 cm.
Ans: (a) 2 cm.
20. The diameter of the base cone is 10.5 cm. and its slant height is 10 cm. The curved surface area is:
(a) 150 sq cm.
(b) 165 sq. cm.
(c) 177 sq. cm.
(d) 180 sq. cm.
Ans: (b) 165 sq. cm.
