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

Subtopic:  Gas Laws |
 67%
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20 L of SO2 diffuses through a porous partition in 60s. Volume of O2 diffuse under similar condition in 30s will be:-

1. 12.14 L

2. 14.14 L

3. 18.14 L

4. 28.14 L

Subtopic:  Graham's Law |
 72%
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In van der Waal's equation of state for a non-ideal gas, the term that accounts for the intermolecular force is-

1. V-b

2. (P+a/V2)

3. RT

4. (RT)-1

Subtopic:  van der Waal’s Correction |
 86%
From NCERT
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At moderate pressure, the van der Waal's equation becomes:

1. PVm = RT

2. P(Vm-b) = RT

3. (P+a/V2m) (Vm )= RT

4. P = RT/Vm + a/V2m

Subtopic:  van der Waal’s Correction |
 67%
From NCERT
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The compressibility factor for a real gas at high pressure is:-

1. 1

2. 1+Pb/RT

3. 1-Pb/RT

4. 1-RT/Pb

Subtopic:  Compressibility Factor |
 82%
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A gas diffuses four time quickly as oxygen. The molecular weight of gas is:

1. 2

2. 4

3. 8

4. 16

Subtopic:  Graham's Law |
 70%
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Which among the following mixtures of gases at room temperature does not obey Dalton's law of partial pressure-

1. He and O2

2. NH3 and HCl

3. H2 and He

4. N2 and He

Subtopic:  Dalton's Law |
 73%
From NCERT
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1.6 g O2 gas and 0.1 g H2 gas are placed in a 1.12 L flask at 0 oC. The total pressure of the gas mixture will be-

1. 2 atm

2. 3 atm

3. 4 atm

4. 1 atm

Subtopic:  Ideal Gas Law |
 63%
From NCERT
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Rate of diffusion of LPG (a mixture of n-butane and propane) is 1.25 times of SO3. Hence, mass fraction of n-butane in LPG is

1. 0.75

2. 0.25

3. 0.50

4. 0.67

 

Subtopic:  Graham's Law |
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An open flask containing air is heated from 300 K to 500 K. The percentage of air that will escape into the atmosphere if pressure is kept constant is-

1. 80

2. 40

3. 60

4. 20

Subtopic:  Gas Laws | Ideal Gas Law |
 59%
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