Question

d. All of the above
ii.. When heat transferred by molecular collision, it is referred to as heat transfe
a. convection
b. conduction
c. radiation
d. convection and radiation
iii. Mass transfer does not take place in-
a. conduction
b. convection
c. radiation
d. None of the above
iv. Thermal conductivity of air with rise in temperature
a. increase
b. decrease
c. constant
d. none of these​

Answer 1

Answer:

ii. conduction

iii. convection

iv. increase

Explanation:

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