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1.
A refrigerator absorbs 
of heat from ice trays. If the coefficient of performance is 4, then work done by the motor is
of heat from ice trays. If the coefficient of performance is 4, then work done by the motor is
2.
A Carnot engine takes heat from a reservoir at 
and rejects heat to a sink at 
Its efficiency will be
and rejects heat to a sink at Its efficiency will be
3.
An ideal monoatomic gas at 
is compressed adiabatically to 8/27 times of its present volume. The increase in temperature of the gas is
is compressed adiabatically to 8/27 times of its present volume. The increase in temperature of the gas is
4.
In which thermodynamic process, volume remains same?
5.
Out of the following which quantity does not depend on path
6.
An adiabatic process occurs at constant
7.
Calculate change in internal energy of a system which has absorbed 2 kcal of heat and done 500 J of work
8.
A container having 1 mole of a gas at a temperature has a movable piston which maintains at constant pressure in container of 1 atm. The gas is compressed until temperature becomes 
. The work done is
has a movable piston which maintains at constant pressure in container of 1 atm. The gas is compressed until temperature becomes . The work done is
9.
A refrigerator works between temperature of melting ice and room temperature 
. The amount of energy in kWh that must be supplied to freeze 1 kg of water at 
is
. The amount of energy in kWh that must be supplied to freeze 1 kg of water at is
10.
An ideal heat engine exhausting heat at is to have 25% efficiency. It must take heat at
is to have 25% efficiency. It must take heat at