Practice Questions with Answers - Multiple Choice Questions

# MCQ Questions for Class 9 Maths Chapter 13 Surface Areas and Volumes

## MCQ Questions for Class 9 Maths Chapter 13 Surface Areas and Volumes

Explore numerous MCQ Questions of Surface Areas and Volumes Class 9 with answers provided with detailed solutions by looking below.

Question 1.
If a spherical balloon grows to twice its radius when inflated, then the ratio of the volume of the inflated balloon to the original balloon is
(a) it is 8 : 1
(b) it is 4 : 1
(c) it is 5 : 1
(d) it is 6 : 1

Answer: (a) it is 8 : 1

Question 2.
The length of the longest rod that can fit in a cubical vessel of side 10 cm, is
(a) 10 cm
(b) 10√2 cm
(c) 10√3 cm
(d) 20 cm

Question 3.
A right circular cone has an altitude of 40 cm and a diameter of 60 cm. The slant height of the cone is
(a) 25 cm
(b) 100 cm
(c) 75 cm
(d) 50 cm

Question 4.
If the diameter of the base of a cylindrical pillar is 4 m and its height is 21 m, then the cost of construction of the pillar at Rs. 1.50 per cubic metre is:
(a) Rs. 396
(b) Rs. 400
(c) Rs. 410
(d) Rs. 420

Question 5.
The height of a right circular cone of radius 5 cm and slant height 13 cm is
(a) 8 cm
(b) 14 cm
(c) 6 cm
(d) 12 cm

Question 6.
The curved surface area of a right circular cone whose slant height is 14 cm and base radius is 21 cm is​
(a) 308 cm2
(b) 924 cm2
(c) 232 cm2
(d) 446 cm2

Question 7.
The perimeter of one face of a cube is 40 cm. The volume of the cube (in cm3) is :
(a) 1600
(b) 1000
(c) 800
(d) 160

Question 8.
The volume of the cylinder whose height is 14 cm and diameter of base 4 cm is:
(a) 176 cm3
(b) 196 cm3
(c) 276 cm3
(d) 352 cm3

Question 9.
A beam 9 m long, 40 cm wide and 20 cm deep is made up of iron which weighs 50 kg per cubic metre. The weight of the beam is :
(a) 27 kg
(b) 36 kg
(c) 48 kg
(d) 56 kg