Chemical Engineering Basics

Question: Classification of metal forming processes into hot and cold working is based on the following parameters.
[A].

Stacking fault energy.

[B].

Recrystallisation temperature.

[C].

Solidus temperature.

[D].

Transformation temperature.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Monazite deposits constitute an important source for the following metal.
[A].

Thorium

[B].

Titanium

[C].

Molybdenum

[D].

None of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Most of the phosphorous present in the blast furnace burden enters into
[A].

hot metal

[B].

flue gases

[C].

slag

[D].

refractory lining

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nusselt number/Biot number varies
[A].

inversely with thermal conductivity.

[B].

directly with heat transfer co-efficient.

[C].

directly with thermal conductivity.

[D].

inversely with the dimension of the solid.

Answer: Option A

Explanation:

No answer description available for this question.

Question: One of the methods of purification of leach liquor is ion exchange, which involves
[A].

exchange between two liquid phases.

[B].

exchange between a gaseous phase and a liquid phase.

[C].

exchange between a liquid phase and an organic resin phase.

[D].

exchange between a solid phase and a gas phase.

Answer: Option C

Explanation:

No answer description available for this question.

Question: L.D. converters are generally lined with
[A].

magnesite

[B].

fireclay

[C].

chrome magnesite

[D].

silica

Answer: Option C

Explanation:

No answer description available for this question.

Question: Hydrogen in liquid steels is dissolved
[A].

as tiny gas bubbles.

[B].

in the atomic form.

[C].

in the ionic form.

[D].

in the molecular form.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Most important property of steels for use in automobile bodies is the
[A].

formability

[B].

yield strength

[C].

toughness

[D].

resilience

Answer: Option A

Explanation:

No answer description available for this question.

Question: Matte smelting is used in the extraction of
[A].

lead

[B].

zinc

[C].

aluminium

[D].

copper

Answer: Option D

Explanation:

No answer description available for this question.

Question: In the Bayer’s process, bauxite is digested under pressure using
[A].

H2SO4

[B].

NaOH

[C].

NH3

[D].

HCl

Answer: Option B

Explanation:

No answer description available for this question.