Test Series-13

### Instructions

• Your test contains 10 multiple choice questions with only one answer
• This is 30 min test.Please make sure you complete it in stipulated time
• You can Finish this test any time using 'Submit' button.
• Once finished you get a chance to review all question with correct answers and their solutions.

1.The area of three adjacent faces of a cube is a, b and c. The volume is V .What is the appropiate relation between V and a,b,c?
V4=abc
V=abc
V3=abc
V2=abc

2) The height of a cone is 16 cm and Slant height is 20 cm. Its radius is ?
12 cm
13 cm
14 cm
10 cm

3. In a cylinder, radius is doubled and height is doubled, curved surface area will be?
become 2 times
become 4 times
remains same
become 1/2 times

4. The dimensions of a cuboid are 50 cm x 40 cm x 10 cm. Its volume in litres is:?

10 litres
20 litres
40 litres
30 litres

5. A Home choclate maker has one spherical chocalate of radius 10cm. With the same amount of material, how many small sphere of choclates of radius 2.5 cm can be made?
16
256
64
None of these

6.Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water?
.31 litres
.2 litres
1 litres
None of these

7. A right triangle with sides 3 cm, 4 cm and 5 cm is revolved about the side 3cm to form a cone.Which of these is false?
Curved surface of cone=20π
Total surface area =36π
Volume=80π/3
None of these

8. A cube of side 42 cm contains a sphere touching its sides. Find the volume of the gap in between?
35280 cm3
35286 cm3
34328 cm3
none of these

9. Mcdonalled provides colddrink to the consumer daily in a cylindrical glasses of radius 7 cm. If the glass is filled with Cocacola upto an height of 12 cm, find how many litres of cocacola is needed to serve 100 consumer?
164 litres
200 litres
160.5 litres

10.The volumes of the two spheres are in the ratio 64 : 27. Find the ratio of their surface areas,
4:3
16:9
64:27
None of these

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