Catalyst used in the hydrogenation of oil is

Question: A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because
[A].

total heat transfer area of all the effects is -less than that in a single effect evaporator system.

[B].

total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect.

[C].

boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system.

[D].

heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place
[A].

between two bodies in physical contact with each other.

[B].

between two bodies not in physical contact with each other.

[C].

from one part of a body to the another part of the same body.

[D].

both ‘b’ & ‘c’

Answer: Option B

Explanation:

No answer description available for this question.