Chemical Engineering Basics

Question: A dense structure of grinding wheel is not used for the
[A].

ductile material.

[B].

hard materials.

[C].

brittle materials.

[D].

finishing cuts.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
[A].

turning

[B].

dressing

[C].

forming

[D].

surface finishing

Answer: Option D

Explanation:

No answer description available for this question.

Question: A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is
[A].

lead

[B].

glass

[C].

mica

[D].

silver

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ can replace tungsten in high speed steel.
[A].

Chromium

[B].

Vanadium

[C].

Cobalt

[D].

Molybdenum

Answer: Option C

Explanation:

No answer description available for this question.

Question: A jig is used while __________ a hole.
[A].

boring

[B].

counter boring

[C].

drilling

[D].

enlarging

Answer: Option C

Explanation:

No answer description available for this question.

Question: Yield strength of a material is determined by the __________ test.
[A].

creep

[B].

tension

[C].

compression

[D].

endurance

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fire refining process is employed in case of
[A].

tin

[B].

copper

[C].

zinc

[D].

aluminium

Answer: Option B

Explanation:

No answer description available for this question.

Question: Drossing is a __________ operation.
[A].

smelting

[B].

dressing

[C].

roasting

[D].

dressing

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ of austenite decreases the hardenability in steel.
[A].

Fine grains

[B].

Coarse grains

[C].

Homogeneity

[D].

Dissolved elements (except cobalt)

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.
[A].

Lancing

[B].

Shot peening

[C].

Slugging

[D].

Spinning

Answer: Option B

Explanation:

No answer description available for this question.