Out of the following surfaces, the emis-sivity will be minimum for

Question: The catalyst in a second order reversible reaction increases the rate of the forward reaction
[A].

and decreases that of backward reaction.

[B].

and backward reaction equally.

[C].

only.

[D].

to a greater extent than that of the backward reaction.

Answer: Option B

Explanation:

No answer description available for this question.

Question: For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.
[A].

film diffusion

[B].

diffusion through ash layer

[C].

chemical reaction

[D].

either (a), (b) or (c)

Answer: Option C

Explanation:

No answer description available for this question.