Chemical Engineering - Chemical Engineering Basics

1. 

In chemical dehumidification process

A. wet bulb temperature increases.
B. dry bulb temperature remains constant.
C. dew point temperature increases.
D. dry bulb temperature increases.

Answer: Option B

Explanation:

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2. 

Secondary hardening in steels arises out of the

A. precipitation of fine alloy carbides at high temperatures.
B. refinement of ferrite grain size by working.
C. decomposition of retained austenite upon heat treatment.
D. precipitation of complex inter-metal-lics upon heat treatment.

Answer: Option C

Explanation:

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3. 

Drills are usually made of

A. cermets
B. high speed steel
C. alloy steel
D. tungsten carbide

Answer: Option B

Explanation:

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4. 

Tumbling is the process of improving the __________ of the materials/parts.

A. surface finish
B. fatigue limit
C. creep limit
D. surface cleanlineses

Answer: Option D

Explanation:

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5. 

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

A. flow output
B. head developed
C. overall efficiency
D. weight

Answer: Option A

Explanation:

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