Thermodynamics Quiz-1

In a process $v\propto T^2$, temperature of 2 moles of a gas in increased by 200 K. Work done by the gas in this process will be

During which of the following process does heat rejection takes place in Carnot cycle:

A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should be temperature of source be increased so as to increase its efficiency by 50% of original efficiency?

A refrigerator with coefficient of performance $\frac13$ releases 200 J of heat to a hot reservoir, then the work done on the working substance is:

The temperature of inside and outside of a refrigerator are 270 K and 303 K respectively. Assuming that the refrigerator cycle is reversible, for every joule of work done the heat delivered to the surroundings will be nearly:

For one mole of a monoatomic gas, the slope of P–v diagram in adiabatic process is:

An ideal gas with adiabatic exponent $\gamma$ is heated at constant pressure. It absorbed ‘Q’ amount of heat. The fractions of heat absorbed in raising the internal energy and performing the work is:

For a monoatomic gas, the work done at constant pressure is W. The heat supplied at constant volume for the same rise in temperature of the gas is:

In an adiabatic change, the pressure P and temperature T of a diatomic gas are related by relation $P\propto T.$ where $\alpha$ equals

An amount Q of heat is added to a monoatomic ideal gas in a process in which the gas performs the work Q/2 on its surroundings. The molar heat capacity for the process will be