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qUESTIONS

An ideal gas undergoes a quasi static, reversible process in which its molar heat capacity C remains constant. If during this process the relation of pressure P and volume V is given by PVn = constant, then n is given by (Here Cp and Cv are molar specific heat at constant pressure and constant volume, respectively)

A gaseous mixture consists of 16 g of helium and 16 g of oxygen. The ratio Cp/ Cv of the mixture is

A mixture of 2 moles of helium gas (atomic mass 4 a.m.u). and 1 mole of argon gas (atomic mass 40 a.m.u) is kept at 300K in a container. The ratio of the rms speeds [Vrms (helium) / Vrms (argon)] is

The temperature of an open room of volume 30 m³ increased from 17°C to 27°C due to the sunshine. The atmospheric pressure in the room remains 1x105Pa. If Ni, and Nf, are the number of molecules in the room before and after heating, then Nf – Ni will be

Cooking gas containers are kept in a long moving with uniform speed. The temperature of the gas molecules inside will

At what temperature is the root mean square velocity of gaseous hydrogen molecules equal to that of oxygen molecules at 47°C

Under which of the following conditions is the law PV = RT obeyed most closely by a real gas

The displacement y of a wave travelling in the x- direction is given by y = 10^-4 sin (800t -2xπ/3) metres, where x is expressed in metres and t in seconds. The speed of the wave-motion, is

The frequency of whistle of a train moving with 20 m/s appears as 500 Hz to a car driver moving with a velocity of 15 m/s. If the train and the car are moving in opposite directions towards each other, then the frequency of the whistle is (Consider velocity of sound in air = 335 m/s)

The frequency of a tuning fork is 220 Hz and the velocity of sound in air is 330 m/s. When the tuning fork completes 800 vibrations, the distance travelled by the

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