CHEMICAL ENGINEERING

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.

Question: Maximum permissible sulphur content in steel is __________ percent.
[A].

0.015

[B].

0.055

[C].

0.505

[D].

0.805

Answer: Option A

Explanation:

No answer description available for this question.

Question: Maximum consumption of limestone is in the __________ industry.
[A].

iron and steel

[B].

cement

[C].

glass

[D].

fertiliser

Answer: Option D

Explanation:

No answer description available for this question.

Question: Cupola produces __________ iron..
[A].

pig

[B].

cast

[C].

wrought

[D].

carbon free

Answer: Option B

Explanation:

No answer description available for this question.

Question: Globular form of cementite is formed during the __________ process.
[A].

spherodising

[B].

hardening

[C].

annealing

[D].

normalising

Answer: Option B

Explanation:

No answer description available for this question.

Question: X-rays do not exhibit the property of
[A].

reflection

[B].

scattering

[C].

diffraction

[D].

dispersion

Answer: Option B

Explanation:

No answer description available for this question.

Question: With increase in temperature, the electrical conductivity of a __________ decreases.
[A].

semi-conductor

[B].

metal or alloy

[C].

dielectric

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.