The average velocity of ideal gas molecules at 27 is 0.3 m/sec. The average velocity at 927 will be
1. 0.6 m/sec
2. 0.3 m/sec
3. 0.9 m/sec
4. 3.0 m/sec
equal masses of methane and hydrogen are mixed in an empty container at The fraction of the total pressure exerted by hydrogen is
1. 1/2
2. 8/9
3. 1/9
4. 16/17
A 2.24 L cylinder of oxygen at STP is found to develop a leakage. When the leakage was plugged, the pressure dropped to 570 mm of Hg. The number of moles of gas that escaped will be:
1. 0.050
2. 0.025
3. 0.075
4. 0.01
Distribution of fraction of molecules with velocity is represented in the figure.
The velocity corresponding to point X is
1.
2.
3.
4. none of the above
A ballon having weight 50 kg is filled with 685.2 kg of helium gas at 760 mm pressure and . What will be its pay load if it displaces 5108 kg of air?
1. 4372.8 kg
2. 4392.6 kg
3. 4444.4 kg
4. 3482.9 kg
For non-zero value of force of attraction between gas molecules for larger volume, gas equation will be
1.
2.
3.
4. PV = nRT
Four rubber tubes are respectively filled with . Which tube will be reinflated first?
1. filled tube
2. filled tube
3. He filled tube
4. filled tube
A gas has the van der Waal constants, a =1.49 . Its Boyle's temperature is nearly
1. 50
2. 354
3. 454 K
4. 408 K
One litre of gas A at 2 atm pressure at 27 and two litres of gas B at 3 atm pressure at 127 are mixed in a 4 litre vessel. The temperature of the mixture is maintained at 327. What is the total pressure of the gaseous mixture?
1. 3.93 atm
2. 3.25 atm
3. 4.25 atm
4. 6.25 atm
The root mean square velocity of one mole of a monoatomic gas having molar mass M is .
The relation between the average kinetic energy (E) of the gas and is
1.
2.
3.
4.