Which of the following is not required in the manufacture of soda ash by Solvay process ?

Question: Mercury cells for caustic soda manufacture, compared to diaphragm cells
[A].

require lower initial investment.

[B].

require more power.

[C].

produce lower concentration NaOH.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

Question: White phosphorous is stored under water, because
[A].

it does not react with water.

[B].

it is poisonous.

[C].

its kindling temperature in dry air is very low.

[D].

it is unstable.

Answer: Option C

Explanation:

No answer description available for this question.

Question: CaSO4 .H2O is known as
[A].

blue vitriol

[B].

plaster of Paris

[C].

gypsum

[D].

zeolite

Answer: Option B

Explanation:

No answer description available for this question.