Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures :

1. 

2. 

3. 

4. 

Subtopic:  Gas Laws |
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The correct option for the total pressure (in atm) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 0°C is :
[Given R=0.082 L atm mol-1 K-1, T=273 K]

1. 25.18

2. 26.02

3. 2.518

3. 2.602

Subtopic:  Ideal Gas Law |
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A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is:

[Use atomic masses (in g mol-1): N=14, Ar=40]

1. 12 bar

2. 15 bar

3. 18 bar

4. 9 bar

Subtopic:  Gas Laws |
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The minimum pressure required to compress 600 dm3 of a gas at 1 bar to 150 dm3 at 40°C is

1. 4.0 bar

2. 0.2 bar

3. 1.0 bar

4. 2.5 bar

Subtopic:  Gas Laws |
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A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is:

1.  Z<1 and repulsive forces are dominant

2.  Z>1 and attractive forces are dominant

3.  Z>1 and repulsive forces are dominant

4.  Z<1 and attractive forces are dominant

Subtopic:  Compressibility Factor |
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In water-saturated air, the mole fraction of water vapor is 0.02. If the total pressure of the saturated air is 1.2 atm, the partial pressure of dry air is-

1. 1.17 atm

2. 1.76 atm

3. 1.27 atm

4.  0.98 atm

Subtopic:  Dalton's Law |
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The volume occupied by 1.8 g of water vapour at 374 oC and 1 bar pressure will be -

[Use R=0.083 bar LK-1 mol-1]

1. 96.66 L

2. 55.87 L

3. 3.10 L

4. 5.31 L

Subtopic:  Ideal Gas Law |
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If van der Waals constant "a" for NH3, H2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, then which one of the following gases is most easily liquefied?

1. NH32. H23. O24. CO2

Subtopic:  Liquefaction of Gases & Liquid |
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The correction factor 'a' for the ideal gas equation corresponds to:
1. density of the gas molecules
2. volume of the gas molecules
3. electric field present between the gas molecules
4. forces of attraction between the gas molecules

Subtopic:  van der Waal’s Correction |
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A gas such as carbon monoxide would be most likely to obey the ideal gas law at
1. High temperature and low pressure
2. Low temperature and high pressure
3. High temperature and high pressure
4. Low temperature and low pressure

Subtopic:  Kinetic Theory of Gas |
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