Chemical Engineering Basics

Question: Minimum thermal efficiency of a steam boiler may be around __________ percent
[A].

25

[B].

45

[C].

65

[D].

20

Answer: Option D

Explanation:

No answer description available for this question.

Question: For separating small pieces of metal from engine oil of a car, the best separating technique is the
[A].

chromatography

[B].

evaporation

[C].

filtration

[D].

fractional distillation

Answer: Option C

Explanation:

No answer description available for this question.

Question: Leakage in a cooking gas cylinder is detected by
[A].

radio-isotopes.

[B].

pouring soap solution on the surface and locating the gas bubbles.

[C].

halide torch.

[D].

pungent smell of mercaptans present in the gas.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Notched bar test is used for testing the __________ of a material.
[A].

impact strength

[B].

endurance limit

[C].

machinability

[D].

corrosion resistance

Answer: Option A

Explanation:

No answer description available for this question.

Question: Direct conversion of thermal energy to electrical energy is facilitated by the
[A].

fuel cells.

[B].

photo voltaic cell.

[C].

magneto hydrodynamic generator.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: “Encyclopaedia of Chemical Technology” has been
[A].

authored by Kirk Othmer.

[B].

edited by Perry and Chilton.

[C].

edited by Kirk Othmer.

[D].

authored by Perry and Chilton.

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ are normally subjected to sub-zero treatment.
[A].

Highly stressed parts

[B].

Gauges or precision parts

[C].

Cold rolled sheets

[D].

Non machinable materials

Answer: Option B

Explanation:

No answer description available for this question.

Question: Flywheel is provided in a machine to
[A].

provide structural strength to the shaft.

[B].

smoothen the power impluses.

[C].

help in quick starting of the machine.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
[A].

stainless steel

[B].

copper

[C].

aluminium

[D].

brass

Answer: Option B

Explanation:

No answer description available for this question.

Question: Function of gear box is to
[A].

reduce the speed.

[B].

obtain variable speed.

[C].

increase the speed.

[D].

produce high torque.

Answer: Option B

Explanation:

No answer description available for this question.