Chemical Engineering Basics

Question: Broaching tools are usually made of
[A].

cermets

[B].

high speed steel

[C].

tungsten carbide

[D].

stellite

Answer: Option B

Explanation:

No answer description available for this question.

Question: Dew point of air indicates its
[A].

moisture content

[B].

dryness

[C].

latent heat

[D].

coolness

Answer: Option A

Explanation:

No answer description available for this question.

Question: Boiling temperature of carbon dioxide at atmospheric pressure is __________ °C.
[A].

-30.5

[B].

-78.5

[C].

-183.5

[D].

-10.5

Answer: Option B

Explanation:

No answer description available for this question.

Question: Ammonia leakage in the refrigeration system is detected by
[A].

sulphur stick, which on detection gives white smoke.

[B].

using chemical reagents.

[C].

its smell.

[D].

soap solution.

Answer: Option A

Explanation:

No answer description available for this question.

Question: More than 1000 tons refrigeration capacity plants are usually of __________ type.
[A].

vapour compression

[B].

vapour absorption

[C].

air refrigeration

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Air-petrol ratio for maximum power generation in spark ignition engine is about
[A].

6:1

[B].

12 : 1

[C].

18 : 1

[D].

24 : 1

Answer: Option B

Explanation:

No answer description available for this question.

Question: Gas turbine normally employs a constant __________ cycle.
[A].

pressure

[B].

temperature

[C].

volume

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
[A].

9:1

[B].

17 : 1

[C].

23 : 1

[D].

29 : 1

Answer: Option B

Explanation:

No answer description available for this question.

Question: Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
[A].

9.5:1

[B].

12.5:1

[C].

15.5 :1

[D].

18.5 : 1

Answer: Option A

Explanation:

No answer description available for this question.

Question: A coal with high __________ content will ignite most easily.
[A].

hydrogen

[B].

oxygen

[C].

volatile matter

[D].

fixed carbon

Answer: Option C

Explanation:

No answer description available for this question.