During An Adiabatic Process At Constant Pressure, The Temperature And Volume Of A Gas Are Found To Vary According To The Relation TV0.4 constant. The Gas Should Be:

In an adiabatic expansion of a gas, the product of pressure and volume:

One of the most efficient engines ever developed operates between 2100 K and 700 K. Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this?

In an adiabatic change, the pressure P and temperature T  of a diatomic gas are related by the relation   where C equals:

By opening the door of a refrigerator inside a closed room:

One mole of an ideal mono-atomic gas is heated at a constant pressure of one atmosphere from 0^oC to 100^oC. Then the change in the internal energy is:

One mole of an ideal mono-atomic gas is heated at a constant pressure of one atmosphere from 0^oC to 100^oC. The work done by the gas is:

One mole of an ideal mono-atomic gas is heated at a constant pressure of one atmosphere from 0^oC to 100^oC. The heat taken from the source is:

Three moles of an ideal mono-atomic gas perform a cycle as shown in figure. The gas temperatures in different states are  The work done by the gas during the cycle will be:

Equal volumes of water and alcohol when put in similar calorimeters take 100 sec and 74 sec respectively to cool from 50^oC to 40^oC. The thermal capacity of each calorimeter is numerically equal to the volume of either liquid. The specific gravity of alcohol is 0.8. If the specific heat capacity of water is 1 cal/g, the specific heat capacity of alcohol will be:

A system S receives heat continuously from an electric heater of power 10 W. The temperature of S becomes constant at 50^oC when the surrounding temperature is 20^oC. After the heater is switched off, S cools from 35.1^oC to 34.9^oC in 1 minute. The heat capacity of S is: