1) At constant temperature , on increasing the pressure of a gas by 5 % , its volume will decrease by ?

1 ) At constant temperature , on increasing the pressure of a gas by 5 % , its volume will decrease by : -

Solution : -

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2 ) A gas at temperature of 27 C is heated at constant pressure to triple it volume . The final temperature of gas will be : -

A ) 273 C ,                                                 B ) 300 C ,

C ) 627 C ,                                                 D ) None of these ,

Correct Answer : -   C ) 627 C ,

Solution : -

T1  =  27 + 273  =  300 K    ,    V2 = 3V .

So , we have formula ; -

( V1 / T1 )  =  ( V2 / T2 )  ,

( V / 300 )  =  ( 3V / T2 )  ,

So ,  T2  =  900 K  =  900 – 273  =  627 C  ,  Answer .

OR

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3 ) Which of the following have highest coagulating power for  Fe(OH)₃  colloid ?

Options : -

Solution : -

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4 ) Which of the following will have highest coagulating power  As₂S₃  colloid ?

Options : -

Solution : -

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