6. The ratio of rate diffusion of oxygen and hydrogen is

1. 1. 1 : 4

   
   
   

   2. 1 : 1

   
   
   

   3. 1 : 2

   
   
   

   4. 2 : 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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7. Which one is lesser than dry air in weight ?

1. 1. O₂

   
   
   

   2. H₂

   
   
   

   3. Moist air

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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8. The density of the gas is equal to

1. 1. np

   
   
   

   2. MP/RT

   
   
   

   3. P/RT

   
   
   

   4. M/V

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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9. If the vapour density of a gas is molecular mass will be

1. 1. 12

   
   
   

   2. 16

   
   
   

   3. 18

   
   
   

   4. 28

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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10. 4.4 g of CO₂ contains how many litre of CO₂ at STP ?

1. 1. 2.4 litre

   
   
   

   2. 2.24 litre

   
   
   

   3. 44 litre

   
   
   

   4. 22.4 litre

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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