One litre of Helium gas at a pressure 76 cm of Hg and temperature 27°C is heated till its pressure and volume are doubled. The final temperature attained by the gas is :

1.  927°C                                 

2.  900°C

3.  627°C                                 

4.  327°C

Subtopic:  Ideal Gas Equation |
 79%
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The molecular weight of a gas is 44. The volume occupied by 2.2 g of this gas at 0°C and 2 atm pressure will be-

1.  0.56 litre                           

2.  1.2 litres

3.  2.4 litres                           

4.  5.6 litres

Subtopic:  Ideal Gas Equation |
 60%
From NCERT
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A gas at 27°C temperature and 30 atmospheric pressure is allowed to expand to the atmospheric pressure. If the volume becomes 10 times its initial volume, then the final temperature becomes

1.  100°C                             

2.  173°C

3.  273°C                             

4.  – 173°C

Subtopic:  Ideal Gas Equation |
 71%
From NCERT
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In the relation n=PVRT, n=

1.  Number of molecules                             

2.  Atomic number

3.  Mass number                                         

4.  Number of moles

Subtopic:  Ideal Gas Equation |
 92%
From NCERT
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The equation of state corresponding to 8 g of O2 is :

1.  PV = 8RT                           

2.  PV = RT/4

3.  PV = RT                             

4.  PV = RT/2

Subtopic:  Ideal Gas Equation |
 90%
From NCERT
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Three containers of the same volume contain three different gases. The masses of the molecules are m1, m2 and m3 and the number of molecules in their respective containers are N1, N2 and N3 . The gas pressure in the containers are P1, P2 and P3 respectively. All the gases are now mixed and put in one of the containers. The pressure P of the mixture will be :

1. P<P1+P2+P3                               

2. P=P1+P2+P33

3. P=P1+P2+P3                                 

4. P>P1+P2+P3

Subtopic:  Ideal Gas Equation |
 59%
From NCERT
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At a given volume and temperature, the pressure of a gas :

1. Varies inversely as its mass

2. Varies inversely as the square of its mass

3. Varies linearly as its mass

4. Is independent of its mass

Subtopic:  Ideal Gas Equation |
 69%
From NCERT
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The rate of diffusion is :

1. Faster in solids than in liquids and gases

2. Faster in liquids than in solids and gases

3. Equal to solids, liquids, and gases

4. Faster in gases than in liquids and solids

Subtopic:  Ideal Gas Equation |
 88%
From NCERT
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Two thermally insulated vessels 1 and 2 are filled with air at temperatures T1, T2, volume V1, V2 and pressure P1, P2 respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be

1. T1+T2                               

2. T1+T2/2

3. T1T2P1V1+P2V2P1V1T2+P2V2T1                 

4. T1T2P1V1+P2V2P1V1T2+P2V2T2

Subtopic:  Ideal Gas Equation |
 76%
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For matter to exist simultaneously in gas and liquid phases :

1. The temperature must be 0 K.

2. The temperature must be less than 0°C.

3. The temperature must be less than the critical temperature.

4. The temperature must be less than the reduced temperature.

Subtopic:  Ideal Gas Equation |
 80%
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