Q. No.A mixture of Ne and Ar at 250 K has a total K.E.=3 kJ in a closed vessel, the total mass if Ne and Ar is 30 g. Find mass % of Ne in a gaseous mixture at 250 K.
1. 61.63 %
2. 38.37 %
3. 50 %
4. 28.3 %
In two vessels of 1 litre each at the same temperature 1 g of and 1 g of are taken, for these:
1. values will be same
2. Kinetic energy per mol will be same
3. Total kinetic energy will be same
4. Pressure will be same
A gaseous mixture contains 4 molecules with a velocity of , 5 molecules with a velocity of and 10 molecules with a velocity of . What is the RMS velocity of the gas:
1.
2.
3.
4.
The ratio between the root mean square velocity of at 50 K and that of at 800 K is:
1. 4
2. 2
3. 1
4. 1/4
If represent the speeds of molecules respectively, then the root mean square speed will be:
1.
2.
3.
4.
At what temperature will average speed of the molecules of the second member of the series be the same of at ?
1. 259.4 K
2. 400 K
3. 532.4 K
4. None of these
If of a gas is then the molar mass of gas is:
1. 0.02 kg/mol
2. 0.001 kg/mol
3. 0.003 kg/mol
4. 1 kg/mol
The compressibility factor for nitrogen at 330 K and 800 atm is 1.90 and at 570 K and 200 atm is 1.10. A certain mass of occupies a volume of at 330 K and 800 atm. Calculate volume occupied by same quantity of gas at 570 K and 200 atm:
1. 1 L
2. 2 L
3. 3 L
4. 4 L
Consider the following statements. If the van der Waals' parameters of two gases are given as
then:
1. Critical volume of A > Critical volume of B
2. Critical pressure A > Critical temperature of B
3. Critical temperature of A > Critical temperature of B
Which of the above statement is incorrect?
1. 1 alone
2. 1 and 2
3. 1, 2 and 3
4. 2 and 3
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