Chemical Engineering Basics

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.

Question: A material is capable of resisting softening at high temperature, because of its property termed as
[A].

hot temper

[B].

hot hardness

[C].

fatigue

[D].

creep

Answer: Option B

Explanation:

No answer description available for this question.

Question: Addition of __________ to steel does not impart hardness.
[A].

nickel

[B].

copper

[C].

chromium

[D].

silicon

Answer: Option B

Explanation:

No answer description available for this question.

Question: Metal shots used in shot blasting are made of
[A].

stellite

[B].

steel

[C].

bronze

[D].

lead

Answer: Option B

Explanation:

No answer description available for this question.

Question: In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.
[A].

percentage elongation

[B].

brinell hardness

[C].

tensile strength

[D].

all ‘a’ , ‘b’ & ‘c’

Answer: Option A

Explanation:

No answer description available for this question.