Chemical Engineering

Question: Evaporative cooling process employs a combination of cooling and humidification in which the
[A].

sensible heat is added.

[B].

sensible heat is removed and the latent heat is added.

[C].

latent heat is removed.

[D].

sensible heat is added and latent heat is removed.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Corrosion is
[A].

a physical phenomenon.

[B].

a chemical phenomenon.

[C].

same as erosion.

[D].

an uncontrollable phenomenon.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.
[A].

yield strength

[B].

elastic limit

[C].

proportional limit

[D].

maximum point

Answer: Option C

Explanation:

No answer description available for this question.

Question: Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
[A].

18

[B].

16

[C].

14

[D].

12

Answer: Option B

Explanation:

No answer description available for this question.

Question: Aluminium is extracted from
[A].

chalcocite

[B].

bauxite

[C].

galena

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Chalcopyrite is an ore of
[A].

lead

[B].

aluminium

[C].

copper

[D].

zinc

Answer: Option C

Explanation:

No answer description available for this question.

Question: Galena is an ore of
[A].

iron

[B].

copper

[C].

lead

[D].

aluminium

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ property of a material is determined by the Herbert Pendulum device.
[A].

Hardness

[B].

Tensile

[C].

Toughness

[D].

Compressive

Answer: Option A

Explanation:

No answer description available for this question.

Question: L.D. (Linz-Donawitz) converter is used in the production of
[A].

copper

[B].

steel

[C].

zinc

[D].

aluminium

Answer: Option B

Explanation:

No answer description available for this question.

Question: Annealing of cast iron
[A].

softens it to facilitate machining.

[B].

decreases the free carbon.

[C].

increases the strength.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.