**Q1. Two right circular cylinders of equal volume have their heights in the ratio 1 : 2. The ratio of their radii is : **

(a)

(b) 2 : 1

(c) 1 : 2

(d) 1 : 4

**Q2. A hollow iron pipe is 21 cm long and its exterior diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs , then the weight of the pipe is **

(a) 3.696 kg

(b) 3.6 kg

(c) 36 kg

(d) 36.9 kg

**Q3. Two iron sheets spherical in shape each of diameters 6 cm are immersed in the water contained in a cylindrical vessel of radius 6 cm. the level of the water in the vessel will be raised by **

(a) 1 cm

(b) 2 cm

(c) 3 cm

(d) 6 cm

**Q4. The radii of the base of two cylinders A and B are in the ratio 3 : 2 and their height in the ratio n : 1. If the volume of cylinder A is 3 times that of cylinder B, the value of n is **

**Q5. Water is being pumped out through a circular pipe whose internal diameter is 7 cm. If the flow of water is 12 cm per second. How many litres of water is being pumped out in one hour ? **

(a) 1663.2

(b) 1500

(c) 1747.6

(d) 2000

**Q6. The lateral surface area of a cylinder is 1056 and its height is 16 cm. Find its volume. **

(a) 4545 cm3

(b) 4455 cm3

(c) 5445 cm3

(d) 5544 cm3

**Q7. From a solid cylinder whose height is 12 cm and diameter 10 cm, a conical cavity of same height and same diameter of the base is hollowed out. The volume of the remaining solid is approximately **

**Q8. The curved surface area and the total surface area of a cylinder are in the ratio 1 : 2.If the total surface area of the right cylinder is 616, then its volume is : **

**Q9. If diagonal of a cube is cm, then its volume in cubic cm is : **

(a) 8

(b) 12

(c) 24

(d)

**Q10. If the volume of two cubes are in the ratio 27 : 1, the ratio of their edge is : **

(a) 3 : 1

(b) 27 : 1

(c) 1 : 3

(d) 1 : 27

**Solutions:**

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