In case of __________ reactions, the reaction rate does not decrease appreciably as the reaction proceeds.

Question: Double pipe heat exchangers are used
[A].

when heat transfer area required is very high.

[B].

when heat transfer area required is very low, i.e (100-200 ft2).

[C].

because it occupies less floor area.

[D].

because it is less costly.

Answer: Option B

Explanation:

No answer description available for this question.