High purity nitrogen is used in__________________?

Question: Gun powder uses
[A].

sulphur

[B].

charcoal

[C].

potassium nitrate

[D].

all (a), (b), & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: Blue colour is imparted to glass by the addition of
[A].

FeSO4

[B].

PbO

[C].

CaO

[D].

NaOH

Answer: Option C

Explanation:

No answer description available for this question.

Question: Digestion of wood-base materials (for manufacture of pulp) is done to
[A].

remove lignin.

[B].

produce long fibres.

[C].

prevent deterioration on storage.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Flux addition during smelting of ore is done to
[A].

remove impurities/gangue.

[B].

enhance rate of reaction.

[C].

accelerate reduction of ore.

[D].

separate slag from metal.

Answer: Option A

Explanation:

No answer description available for this question.