In which case rate of diffusion is highest if all are present in the same container at the same temerature:

1. 4g H2

2. 32g O2

3. 22g CO2

4. 56g N2

Concept Questions :-

Graham's Law
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At high temperature, Vander Waal gas equation is reduced to (For 1 mole of gas)

1. Z = 1- a/RTV

2. PV = RT +Pb

3. PV = RT +a/V

4. Z = 1- Pb/RT

Concept Questions :-

Vanderwaal Correction
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Partial pressure of Hydrogen in Flask containing 2 gm of H2 and 32 gm of SO2 is 

1. 1/16 of total pressure

2. 1/2 of total pressure

3. 2/3 of total pressure

4. 1/8 of total pressure

Concept Questions :-

Ideal Gas Law
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At high pressure, the compressibility factor 'Z' is equal to 

1. unity

2. 1-Pb/RT

3. 1+Pb/RT

4. zero

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At canstant temperature 200 cm3 of N2 at 720 mm and 400 cm3 of O2 at 750 mm pressure are put together in a one litre flask. The final pressure of mixture is 

1. 111 mm

2. 222 mm

3. 333 mm

4. 444 mm

Concept Questions :-

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The rate of diffusion of two gases a and B is in the ratio of 1:4 and the B and C in the ratio 1:3 the rate of diffusion of C with respect to A is 

1. 1/12

2. 12

3. 3

4. 4

Concept Questions :-

Graham's Law
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A sample of air contains only N2, O2 and H2O. It is saturated with water vapours and the total pressure of 640 torr. The vapoure pressure of water is 40 torr and the molar ratio of N2:O2 is 3:1. The partial pressure of N2 in the sample in 

1. 480 torr

2. 600 torr

3. 525 torr

4. 450 torr

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The temperature at which the r.m.s velocity of carbon dioxide becomes the same as that of nitrogen at 210C is

1. 4620C

2. 273K

3. 1890C

4. 546K

Concept Questions :-

Molecular Velocity
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At what temperature will the total K.E. of 0.3 mol of He be the same as the total K.E. of 0.4 mol of Ar at 400 K

1. 400K

2. 300K

3. 346K

4. 533K

Concept Questions :-

Kinetic Theory of Gas
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The density of O2(g) is maximum at:-

1. STP

2. 273 K and 2 atm 

3. 546 K and 1 atm

4. 546 K and 2 atm

Concept Questions :-

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