At very low temperature, the melting and boiling temperatures become equal. This temperature is____________________?

The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is__________________?

A. less

B. more

C. equal

D. may be less or more depending on temperature

E. unpredictable

Carbonation of coal is the process of________________________?

A. pulverising coal in inert atmosphere

B. heating wood in a limited supply of air at temperatures below 300°C

C. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

D. binding the pulverised coal into brick-ettes

E. enriching carbon in the coal

Heating of dry steam above saturation temperature is known as_____________________?

A. enthalpy

B. superheating

C. supersaturation

D. latent heat

E. super tempering

If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to__________________?

A. Ps-Pa

B. pa-ps

C. Pa+P

D. non of these

The specific volume of steam with increase in pressure decreases_____________________?

A. linearly

B. slowly first and then rapidly

C. rapidly first and then slowly

D. inversely

E. none of the above