Chemical Engineering

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

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Question: Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
[A].

has larger production capacity per unit cell.

[B].

consumes less power per ton of Cl2 produced.

[C].

produces high purity (70%) caustic soda directly.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst

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Question: In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst
[A].

gives higher conversion efficiency.

[B].

has a longer life and is not poisoned by arsenic.

[C].

handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

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Question: During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as
[A].

it is very corrosive at elevated temperature.

[B].

its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced).

[C].

it decomposes on further increasing the temperature.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Dacron is a

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Question: Dacron is a
[A].

condensation product of hexam-ethylene diamine and adipic acid.

[B].

thermosetting material.

[C].

condensation product of dimethyl terephthalate and ethylene glycol.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.