11. At constant temperature and pressure the volume of a gas is directly proportional to the number of molecule. This law had been given by

1. 1. Boyle

   
   
   

   2. Charle

   
   
   

   3. Avogadro

   
   
   

   4. None

   
   
   

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   NA

   Correct Option: C

   NA

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12. An ideal gas is one which obeys

1. 1. Gas laws

   
   
   

   2. Boyle's laws

   
   
   

   3. Charles' law

   
   
   

   4. Avogadro's law

   
   
   

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   NA

   Correct Option: A

   NA

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13. In general gas equation, pV=nRT, V is the volume of

1. 1. n mole of a gas

   
   
   

   2. any amount of gas

   
   
   

   3. one mole of a gas

   
   
   

   4. one gram of a gas

   
   
   

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   NA

   Correct Option: A

   NA

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14. Rate of diffusion of a gas is

1. 1. directly proportional to its density

   
   
   

   2. directly proportional to its molecular mass

   
   
   

   3. directly proportional to the square of its molecular mass

   
   
   

   4. inversely proportional to the square root of its molecular mass

   
   
   

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   NA

   Correct Option: D

   NA

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15. The rate of diffusion of hydrogen is about

1. 1. one half that of helium

   
   
   

   2. 1.4 times that of helium

   
   
   

   3. twice that of helium

   
   
   

   4. four times that of helium

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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