CHEMICAL ENGINEERING

Question: Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at
[A].

high vacuum

[B].

zero pressure

[C].

0°K

[D].

earth’s centre

Answer: Option B

Explanation:

No answer description available for this question.

Question: A gas having a negative Joule-Thompson co-efficient, when throttled, will
[A].

become hotter.

[B].

become cooler.

[C].

remain unchanged.

[D].

liquefy.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Function of feed check valve in a boiler is to
[A].

facilitate circulation of high pressure feed water.

[B].

check the water level in the boiler drum.

[C].

prevent the back flow of water.

[D].

regulate the water flow to boiler.

Answer: Option C

Explanation:

No answer description available for this question.

Question: A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm2.
[A].

6

[B].

18

[C].

38

[D].

52

Answer: Option B

Explanation:

No answer description available for this question.

Question: A high pressure boiler generates steam at a pressure greater than __________ kg/cm2 .
[A].

10

[B].

30

[C].

50

[D].

80

Answer: Option D

Explanation:

No answer description available for this question.

Question: Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.A. Induced draft fan B. Economiser C. Air preheater D. Steam superheater Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?
[A].

A, C, B, D

[B].

D, B, C, A

[C].

D, C, B, A

[D].

D, A, B, C

Answer: Option B

Explanation:

No answer description available for this question.

Question: Natural water contains approximately __________ percent of heavy water.
[A].

0.015

[B].

0.71

[C].

1.2

[D].

3.5

Answer: Option A

Explanation:

No answer description available for this question.

Question: If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.
[A].

critical

[B].

breeder

[C].

fertile

[D].

heterogenous

Answer: Option B

Explanation:

No answer description available for this question.

Question: CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the
[A].

specific fuel consumption is very low due to the use of heavy water.

[B].

fuel cost is much lower than that used in pressurised water or boiling water reactor.

[C].

heavy water is used both as coolant as well as moderator.

[D].

both ‘b’ & ‘c’

Answer: Option D

Explanation:

No answer description available for this question.

Question: Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.
[A].

electromagnetic

[B].

axial flow

[C].

diaphragm

[D].

reciprocating

Answer: Option A

Explanation:

No answer description available for this question.