According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.

Addition of heat at constant pressure to a gas results in

A. Raising its temperature

B. Raising its pressure

C. Raising its volume

D. Raising its temperature and doing external work

Which of the following items is not a path function?

A. Heat

B. Work

C. Kinetic energy

D. Thermal conductivity

An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is

A. Feasible

B. Impossible

C. Possible

D. Possible, but with lot of sophistications

The absolute zero pressure can be attained at a temperature of

A. 0°C

B. -273°C

C. 273 K

D. None of these