Chemical Engineering - Chemical Engineering Basics

11. 

The ability of a substance to assume two or more crystalline structure is called

A. isomorphism
B. polymorphism
C. amorphism
D. isomerism

Answer: Option B

Explanation:

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12. 

The main function of the deaerator used in the thermal power plant is to

A. throttle down the steam pressure.
B. enhance feed water temperature.
C. remove dissolved gases from feed-water.
D. remove non-condensable gases from condenser.

Answer: Option C

Explanation:

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13. 

Lubricants can be used to

A. transmit power hydraulically.
B. form a seal in compressors.
C. remove contaminants by flushing and to insulate transformers, switchgears etc.
D. all (a), (b) & (c).

Answer: Option D

Explanation:

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14. 

Which of the following is termed as the boiler mounting ?

A. Feed water pump
B. Steam superheater
C. Blow off cock
D. Economiser

Answer: Option C

Explanation:

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15. 

Paint spray gun works on the principle of

A. Bernoulli's theorem.
B. Boyle's law.
C. Newton's law of viscosity.
D. none of these.

Answer: Option A

Explanation:

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