Test Preparation on Thermodynamics-I-Physics Test Series For NEET 2020

If the amount of heat given to a system is 35 J and the
amount of work done on the system is 15 J, then the change
in internal energy of the system is

When an ideal monoatomic gas is heated at constant
pressure, fraction of heat energy supplied which increases
the internal energy of gas, is-

If Q, E and W denote respectively the heat added, change in
internal energy and the work done in a closed cycle process,
then-

A container of volume 3 1m is divided into two equal
compartments by a partition. One of these compartments
contains an ideal gas at 300 K. The other compartment is
vacuum. The whole system is thermally isolated from its
surroundings. The partition is removed and the gas expands
to occupy the whole volume of the container. Its
temperature now would be-

100g of water is heated from 30ºC to 50ºC ignoring the
slight expansion of the water, the change in its internal
energy is (specific heat of water is 4184 J/Kg/K)-