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

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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

Concept Questions :-

Specific heat
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In Boyle's law what remains constant :

1. PV                                     

2. TV

3. VT                                     

4. PT

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Equation of gas in terms of pressure (P), absolute temperature (T) and density (d) is :

1. P1T1d1=P2T2d2                                 

2. P1T1d1=P2T2d2

3. P1d2T1=P2d1T1                                 

4. P1d1T1=P2d2T2

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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

Concept Questions :-

Types of velocity
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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

Concept Questions :-

Types of velocity
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At what temperature is the root mean square velocity of gaseous hydrogen molecules is equal to that of oxygen molecules at 47°C

1.  20 K                               

2.  80 K

3.  – 73 K                           

4.  3 K

Concept Questions :-

Types of velocity
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The root mean square velocity of a gas molecule of mass m at a given temperature is proportional to

1. m0                                     

2. m

3. m                                   

4. 1m

Concept Questions :-

Types of velocity
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At room temperature, the r.m.s. speed of the molecules of certain diatomic gas is found to be 1930 m/s. The gas is :

1. H2                               

2. F2

3. O2                               

4. Cl2

Concept Questions :-

Types of velocity
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Moon has no atmosphere because :

1. The r.m.s. the velocity of all gases is more than the escape velocity from the moon's surface.

2. Its surface is not smooth.

3. It is quite far away from the earth.

4. It does not have a population and plants.

Concept Questions :-

Types of velocity
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