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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The value of critical temperature in terms of Vander Waal’s constant a and b is

1. Tc=8 a27 Rb                           

2. Tc=a2 Rb

3. Tc=827 Rb                             

4. Tc=27 a8 Rb

Subtopic:  Ideal Gas Equation |
 82%
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In Vander Waal’s equation, a and b represent P+aV2v-b=RT

1. Both a and b represent correction in volume

2. Both a and b represent adhesive force between molecules

3. a represents adhesive force between molecules and b correction in volume

4. a represents correction in volume and b represents adhesive force between molecules

Subtopic:  Ideal Gas Equation |
 80%
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At 0°C the density of a fixed mass of a gas divided by pressure is x. At 100°C, the ratio will be:

1. x                                   

2. 273373x

3. 373273x                           

4. 100273x

Subtopic:  Ideal Gas Equation |
 74%
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At what temperature volume of an ideal gas at 0°C becomes triple keeping the pressure constant :

1. 546°C                                 

2. 182°C

3. 819°C                                 

4. 646°C

Subtopic:  Ideal Gas Equation |
 73%
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If an ideal gas has volume V at 27°C and it is heated at a constant pressure so that its volume becomes 1.5V. Then the value of final temperature will be

1. 600°C                             

2. 177°C

3. 817°C                             

4. None of these

Subtopic:  Ideal Gas Equation |
 85%
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A tyre kept outside in sunlight bursts off after sometime because of :

1. Increase in pressure                                 

2. Increases in volume

3. Both (a) and (b)                                       

4. None of these

Subtopic:  Ideal Gas Equation |
 58%
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In Boyle's law what remains constant :

1. PV                                     

2. TV

3. VT                                     

4. PT

Subtopic:  Ideal Gas Equation |
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The figure shows two flasks connected to each other. The volume of the flask 1 is twice that of flask 2. The system is filled with an ideal gas at temperature 100 K and 200 K respectively. If the mass of the gas in flask 1 be m, then what is the mass of the gas in flask 2?

         

1. m                                       

2. m2

3. m4                                     

4. m8

Subtopic:  Ideal Gas Equation |
 75%
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The absolute temperature of a gas is determined by

1. The average momentum of the molecules

2. The velocity of sound in the gas

3. The number of molecules in the gas

4. The mean square velocity of the molecules

Subtopic:  Types of Velocities |
 72%
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