**MCQs Questions for Class 9 Maths Chapter 13 Surface Areas and Volumes**

In this 21^{st} century, Multiple Choice Questions (MCQs) play a vital role to prepare for a competitive examination. CBSE board has also brought a major change in its board exam patterns. Now-a-days, a total of 10 MCQs questions are asked in the class 10 board examination.

In most of the competitive examinations, only MCQ questions are asked. So, for getting ready for the competitive examinations, we have to practice for MCQs questions to solve. It strengthens the critical thinking and problem solving skills.

In future, if you want to prepare for competitive examination and to crack it, then you should more focus on the MCQ questions. Thus, from the board examinations point of view and competitive examinations point of view, you should practice more on multiple choice questions.

Thus, let’s solve these MCQs Questions to make our foundation very strong.

**MCQs Questions for Class 9
Maths Chapter 13 Surface Areas and Volumes**

**1.**** The
formula to find surface area of a cuboid of length ( l), breadth (b) and
height (h) is:**

(a)

*lb*+

*bh*+

*hl*

(b) 2(

*lb*+

*bh*+

*hl*)

(c) 2(

*lbh*)

(d)

*lbh*/2

**Answer: b**

**2. **If the perimeter of one of the faces of a cube is 40 cm, then
its volume is:

(a) 6000 cm³

(b) 1600 cm³

(c) 1000 cm³

(d) 600 cm³

**Answer: c**

## 3. If slant height of the cone is 21 cm and
diameter of base is 24 cm. The total surface area of cone is:

(a) 1200.77 sq. cm

(b) 1177 sq. cm

(c) 1222.77 sq. cm

(d) 1244.57 sq. cm

**Answer: c**

**4. **The radius of a cylinder is doubled and the height remains
the same. The ratio between the volumes of the new cylinder and the original
cylinder is

(a) 1 : 2

(b) 3 : 1

(c) 4 : 1

(d) 1 : 8

**Answer: c**

**5. ****The surface area
of a cube whose edge equals to 3 cm is:****
**(a) 62 sq. cm

(b) 30 sq. cm

(c) 54 sq. cm

(d) 90 sq. cm

**Answer: c**

## 6. A rectangular sand box is 5 m wide and 2 m
long. How many cubic metres of sand are needed to fill the box up to a depth of
10 cm?

(a) 1

(b) 10

(c) 100

(d) 1000

**Answer: a**

**7. **The
length of diagonals of a cube of side *a* cm is

(a) √2*a*
cm

(b) √3*a*
cm

(c) 3√*a** *cm

(d) 1 cm

**Answer: b**

**8. ****The surface area
of cuboid-shaped box having length = 80 cm, breadth = 40 cm and height = 20 cm
is:**

(a) 11200 sq. cm

(b) 13000 sq. cm

(c) 13400 sq. cm

(d) 12000 sq. cm

**Answer: a**

## 9. In a cylinder, radius is doubled and height
is halved, curved surface area will be

(a) halved

(b) doubled

(c) same

(d) four time

**Answer: c**

**10. **Volume of hollow cylinder

(a) Ï€(R² – r²)h

(b) Ï€R²h

(c) Ï€r²h

(d) Ï€r²(h_{1} – h_{1})

**Answer: a**

**11. ****The volume of
hemisphere whose radius is r, is:****
**(a) 4/3 Ï€r

^{3}

(b) 4Ï€r

^{3}

(c) 2Ï€r

^{3}

(d) ⅔ Ï€r

^{3}

**Answer: d**

## 12. The length of the longest pole that can be
put in a room of dimension (10 m × 10 m × 5 m) is

(a) 15 m

(b) 16 m

(c) 10 m

(d) 12 m

**Answer: d**

**13. **The radius of a hemispherical balloon increases from 6 cm to
12 cm as air is being pumped into it. The ratios of the surface areas of the
balloon in the two cases is

(a) 1 : 4

(b) 1 : 3

(c) 2 : 3

(d) 2 : 1

**Answer: a**

**14. ****The curved
surface area of a right circular cylinder of height 14 cm is 88 cm ^{2}.
The diameter of the base is:**

**(a) 2 cm**

(b) 3 cm

(c) 4 cm

(d) 6 cm

**Answer: a**

**15. **The
**diameter of the
base of a 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

**Answer: b**

**16. **The lateral surface area of a cube is 256 m³. The volume of
the cube is

(a) 512 m³

(b) 64 m³

(c) 216 m³

(d) 256 m³

**Answer: a**

**17. ****If slant height
of the cone is 21 cm and diameter of base is 24 cm, the the total surface area
of cone is:****
**(a) 1200.77 sq. cm

(b) 1177 sq. cm

(c) 1222.77 sq. cm

(d) 1244.57 sq. cm

**Answer: d**

**18. **A cone is 8.4 cm high and the radius of its base is 2.1 cm.
It is melted and recast into a shape. The radius of the sphere is

(a) 4.2 cm

(b) 2.1 cm

(c) 2.4 cm

(d) 1.6 cm

**Answer: b**

**19. ****The surface area
of a sphere of radius 14 cm is:****
**(a) 1386 sq. cm

(b) 1400 sq. cm

(c) 2464 sq. cm

(d) 2000 sq. cm

**Answer: c**

**20. **The total surface area of a cube is 96 cm². The volume of the
cube is

(a) 8 cm³

(b) 512 cm³

(c) 64 cm³

(d) 27 cm³

**Answer: c**