Forced recirculation of furnace gases is practised

Question: Forced recirculation of furnace gases is practised
[A].

to increase heat transfer by convection.

[B].

to ensure uniform temperature.

[C].

in furnaces, operating below 750°C.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.