During the carbonisation of coal

Question: During the carbonisation of coal
[A].

all tar is evolved at < 600°C.

[B].

evolution of H2 and formation of methane and aromatics occur at > 700°C.

[C].

hard semi-coke starts shrinking at 600°C.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.