NEET Practice Questions (MCQs) with Answers & Solutions

A monoatomic ideal gas, initially at temperature $T_1 $ is enclosed in a cylindes fitted witha frictionless piston. The gas is allowed to expand adiabatically to a temperature $T_2 $ by releasing the piston suddenly If $L_1$ and $L_2$ the lengths of the gas colum be fore and afters expansion respectively, then $ { T_1 \over T_2} $ is given by

In a given process on an ideal gas dw = 0 and dQ < 0. Then for the gas

Wafer of volume 2 filter in a containes is heated with a coil of 1kw at $ 27^\circ C $ The lid of the containes is open and energy dissipates at the late of 160 J/S In how much time tempreture will rise from $ 27 ^\circ to 77 ^\circ $. Specific heat of wafers is 4.2 KJ /Kg

70 calorie of heat are required to raise the temperature of 2 mole of an ideal gas at constant pressure from $ 30 ^\circ to 35 ^\circ $ .The amount of heat required to raise the temperature of the same gas through the same range at constant volume is............calorie.

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

An insulated containes containing monoatomic gas of molas mass Mo is moving with avelocity, V.If the container is suddenly stopped, find the change in temperature.

A Small spherical body of radius r is falling under gravity in a viscous medium. Due to friction the medium gets heated. How does the late of heating depend on radius of body when it attains terminal velocity!

The first law of thermodynamics is concerned withthe conservation of

If heat givento a system is 6 k cal and work done is 6kj. The change in internal energy is ...........KJ.

The internal energy change in a system that has absorbed 2 Kcal of heat and done 500J of work is