Use of water having dissolved oxygen in boilers promotes___________________?

Question: Chalcopyrite is the main ore of
[A].

copper

[B].

lead

[C].

tin

[D].

iron

Answer: Option A

Explanation:

No answer description available for this question.

Question: Most commonly used rubber vulcanising agent is
[A].

sulphur

[B].

bromine

[C].

platinum

[D].

alumina

Answer: Option A

Explanation:

No answer description available for this question.

Question: Catalyst used during the manufacture of ‘Vanaspati Ghee’ is
[A].

zinc

[B].

nickel

[C].

platinum

[D].

copper

Answer: Option B

Explanation:

No answer description available for this question.