Chemical Engineering Basics

Question: Coating of zinc over steel is known as
[A].

cladding

[B].

galvanising

[C].

anodising

[D].

passivation

Answer: Option B

Explanation:

No answer description available for this question.

Question: In a furnace with heating element temperature at 1700°C, the dominant machanism of heat transfer will be
[A].

conduction

[B].

radiation

[C].

natural convection

[D].

forced convection

Answer: Option B

Explanation:

No answer description available for this question.

Question: An ingot is hot forged to a 60% reduction in cross-section area. The percentage reduction in the volume for the above process is
[A].

0

[B].

60

[C].

30

[D].

20

Answer: Option A

Explanation:

No answer description available for this question.

Question: M10 index of coke indicates its
[A].

compressive strength.

[B].

hardness.

[C].

abrasion resistance.

[D].

impact strength.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Lap joints are preferred over butt joints in soldering/brazing, because these joints are
[A].

weaker in tension but stronger in shear.

[B].

weaker in shear but stronger in tension.

[C].

stronger in both shear and tension.

[D].

The lap joints are easily made.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Lead is added to 60:40 brass primarily to improve
[A].

machinability

[B].

corrosion resistance

[C].

fluidity

[D].

strength

Answer: Option A

Explanation:

No answer description available for this question.

Question: Copper deposits are found in India at the following location:
[A].

Kudremukh

[B].

Kolar

[C].

Khetri

[D].

Ramagundam

Answer: Option C

Explanation:

No answer description available for this question.

Question: In the blast furnace, incorporation of water vapour in the blast gives the following effect.
[A].

Increases the reducing potential of the gas.

[B].

Increases the flame temperature.

[C].

No significant change occurs.

[D].

Increases the hydrogen content in the metal.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Electrostatic separation of minerals from each other is based on their differences in the following property.
[A].

Densities.

[B].

Magnetic permeabilities.

[C].

Electrical conductivities.

[D].

Hardness.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Alloy powder manufactured by the following process have spherical shapes.
[A].

Electrochemical deposition.

[B].

Gaseous reduction.

[C].

Atomisation.

[D].

Mechanical attrition.

Answer: Option C

Explanation:

No answer description available for this question.