The increase in pressure  in order to decrease the volume of a gas by 5% at a constant temperature will be -

1. 5%

2. 5.26%

3. 10%

4. 4.26%

Subtopic:  Gas Laws |
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If an open container is heated from 300 K to 400 K, then the % of gas that remains in the container is-

1. 25%

2. 50%

3. 75%

4. 100%

Subtopic:  Ideal Gas Law |
 59%
From NCERT
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The correct statement regarding the van der Waal constant of  N2 & NH3 is -

1. aNH3> aN2, bNH3< bN2

2. aNH3< aN2, bNH3< bN2

3. aNH3> aN2, bNH3> bN2

4. aNH3 < aN2, bNH3> bN2

Subtopic:  Liquefaction of Gases & Liquid |
 58%
From NCERT
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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

Subtopic:  Graham's Law |
 68%
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At high pressure, 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

Subtopic:  van der Waal’s Correction |
 67%
From NCERT
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Partial pressure of Hydrogen in a 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

Subtopic:  Dalton's Law |
 73%
From NCERT
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At high pressure, the compressibility factor 'Z' is equal to- 

1. Unity

2. 1-PbRT

3. 1+PbRT

4. Zero

Subtopic:  Compressibility Factor | van der Waal’s Correction |
 73%
From NCERT
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At constant 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 the mixture is- 

1. 111 mm

2. 222 mm

3. 333 mm

4. 444 mm

Subtopic:  Gas Laws |
 66%
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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

Subtopic:  Graham's Law |
 61%
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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

Subtopic:  Graham's Law |
 54%
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