Chemical Engineering - Chemical Engineering Basics

11. 

Out of the following, the dimensionless quantity is

A. specific weight
B. viscosity
C. Mach number
D. density

Answer: Option C

Explanation:

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12. 

When a copper ball is heated, the largest percentage increase will be in its

A. radius
B. area
C. mass
D. volume

Answer: Option D

Explanation:

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13. 

Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?

A. Shore sceleroscope test.
B. Vicker's hardness test.
C. Brinell hardness test.
D. Rockwell hardness test.

Answer: Option D

Explanation:

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14. 

The most commonly used moderator in nuclear power plant is

A. graphite
B. light water
C. heavy water
D. berellium

Answer: Option A

Explanation:

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15. 

In an isochoric process,

A. there is no transfer of mass and energy.
B. free expansion of an ideal gas occurs.
C. no mechanical work is done by the system.
D. all 'a', 'b' & 'c'.

Answer: Option C

Explanation:

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