A gas approaches ideal gas behavior at . . . . . . . . . . . . : - A ) low temperature and high pressure , B ) high temperature and low pressure , C ) high temperature and high pressure , D ) None of these ,

1 ) A gas approaches ideal gas behavior at . . . . . . . . . . . . : -  

A ) low temperature and high pressure ,

B ) high temperature and low pressure  ,

C ) high temperature and high pressure  ,

D ) None of these ,

Correct Answer : -   B ) high temperature and low pressure  ,

 

2 ) Absolute temperature of an ideal gas is . . . . . . . . . . to the translational kinetic energy of gas molecule .

A ) directly proportional ,                B ) inversely  proportional , 

C ) equal to ,                                    D ) None of these ,

Correct Answer : -  A ) directly proportional ,

T = ( 3 / 2 ) x K.E ,

 

3 ) There is more deviation / difference in the behavior of a gas from the ideal gas equation PV = nRT  at  : -

A ) low temperature and high pressure ,                  

B ) high temperature and low pressure  ,

C ) high temperature and high pressure  ,     

D ) None of these ,

Correct Answer : -   A ) low temperature and high pressure ,      

 

4 ) Ideal gas . . . . . . . . . be liquefied .

A ) can ,                                                     B ) cannot ,

C ) may or may not ,                                 D ) None of these ,

Correct Answer : -   B ) cannot ,

Because in ideal gas intermolecular attractive forces are negligible .

 

5 ) Non - metals usually exists as liquids or gases .

 

6 ) Covalent hydrides are usually volatile liquids or gases .

 

7 ) Metalloids are borderline between metal and non - metallic properties .

 

8 ) Compressibility factor of an ideal gas is 1 .

 

9 ) The relationship which describes the variation of vapour pressure with temperature is called Clausis - Clapeyron equation .

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