Which of the following is produced by condensation polymerisation ?

Question: Glass is corroded by
[A].

fluorine (dry or wet)

[B].

sulphuric acid

[C].

phosphoric acid

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nitriding of steel is done (in electric furnace) at __________ °C.
[A].

510

[B].

1720

[C].

2210

[D].

910

Answer: Option A

Explanation:

No answer description available for this question.