M

Mr. Dubey • 52.30K Points
Coach 

Q. Which of the following is a good medium for constant temperature heating?

(A) water
(B) steam
(C) coolant
(D) diesel
Correct : Option (B)

Explanation: 
 for constant temperature heating (or drying), steam is a very good medium since isothermal condition can be maintained by allowing saturated steam to condense at that temperature and utilising the latent heat released for heating purposes.

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