1000+ Chemical Engineering Heat Transfer MCQ Questions & Answers Pdf - 2

Question: 6

The main purpose of providing fins on heat transfer surface is to increase the

(A) heat transfer co-efficient

(B) heat transfer area

(C) mechanical strength of the equipment

(D) temperature gradient

Question: 7

For a body with very high thermal conductivity,

(A) there will be no heat transfer at all

(B) heat transfer will be very rapid

(C) heat transfer will be very slow

(D) none of these

Question: 8

With an increases in the thickness of insulation around a circular pipe, heat loss to surroundings due to

(A) convection and conduction increases

(B) convection and conduction decreases

(C) convection decreases, while that due to conduction increases

(D) convection increases, while that due to conduction decreases

Question: 9

With increase in temperature, the thermal conductivity of a gas

(A) may increase or decrease depending on the type of gas

(B) increases

(C) decreases

(D) remains same

Question: 10

Economy of a multiple effect evaporator is not influenced much by the

(A) ratio of the weight of the thin liquor to thick liquor

(B) rate of heat transfer

(C) temperature of the feed

(D) boiling point elevations