Chemical Engineering - Chemical Engineering Basics

41. 

Kinematic viscosity of water as compared to that of air is

A. more
B. same
C. 15% more
D. 15% less

Answer: Option D

Explanation:

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42. 

Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point ?

A. Venturi scrubber
B. Electrostatic precipitator
C. Cyclone separator
D. Fabric filter

Answer: Option B

Explanation:

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43. 

Which of the following is the terminology used for the temperature at which the phase changes occur in a metal ?

A. Critical temperature.
B. Recrystallisation temperature.
C. Phase transformation temperature.
D. Transition temperature.

Answer: Option A

Explanation:

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44. 

Puddling process is used for converting pig iron into

A. cast iron
B. wrought iron
C. mild steel
D. semi-steel

Answer: Option C

Explanation:

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45. 

Addition of __________ in steel can help in increasing the depth of hardness.

A. nickel
B. chromium
C. vanadium
D. tungsten

Answer: Option C

Explanation:

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