CHEMICAL ENGINEERING

Question: 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:

No answer description available for this question.

Question: Out of the following, the __________ pipe has the least corrosion resistance.
[A].

mild steel

[B].

copper

[C].

cast iron

[D].

wrought iron

Answer: Option D

Explanation:

No answer description available for this question.

Question: A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its
[A].

aqueous tension.

[B].

saturated humidity.

[C].

vapor pressure.

[D].

absolute humidity.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Heat release during phase change is observed in case of a/an
[A].

boiler

[B].

condenser

[C].

evaporator

[D].

all (a), (b) & (c)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Out of the following, the materials having maximum magnetic permeability is
[A].

silicon steel (Si = 4%)

[B].

cast iron

[C].

wrought iron

[D].

mild steel

Answer: Option A

Explanation:

No answer description available for this question.

Question: Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.
[A].

bomb

[B].

throttling

[C].

Junker’s

[D].

Boy’s

Answer: Option B

Explanation:

No answer description available for this question.

Question: The basic function of the drum in a boiler is to
[A].

act as a storage for feed water.

[B].

act as a storage for steam.

[C].

separate steam from water.

[D].

remove settling impurities from steam.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Function of fusible plug in a boiler is to
[A].

drain out water and sludge from the boiler during repair.

[B].

put off fire in the furnace when water level in the boiler falls to unsafe limit.

[C].

guard the boiler in case of abnormal rise in steam pressure.

[D].

all (a), (b) & (c).

Answer: Option B

Explanation:

No answer description available for this question.

Question: Blow off cock is provided in steam boiler to
[A].

guard the boiler in case of abnormal rise in steam pressure.

[B].

drain out water and sludge during its repair.

[C].

regulate the supply of water in boiler.

[D].

put out the fire in the furnace when the water level in the boiler falls to unsafe limit.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Feed check valve is used in steam boilers to
[A].

check the water level in the boiler.

[B].

check the feed water flow rate.

[C].

feed high pressure water to boiler and guard against its backflow through it.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.