1 ) A certain charge liberate 0.8 g of oxygen . The same charge will liberate , how many g of silver ?

1 ) A certain charge liberate 0.8 g of oxygen . The same charge will liberate , how many g of silver : -

A ) 10.8 g ,                                                 B ) 19.2 g ,

C ) 41 g ,                                                    D ) None of these ,

Correct Answer : -   A ) 10.8 g ,  

Solution : -

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2 ) If 1 A of current is passed through CuSO4 solution for 10 secs , the number of copper atoms deposit at the cathode will be about : -

Solution : -

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3 ) At STP , a container has 1 mole of Ar , 2 moles of CO2 , 3 moles of O2 and 4 moles of N2 without changing total pressure . If one mole of O2 is removed , then partial pressure of O2 : -

A ) 10 % ,                                                   B ) 19 % ,

C ) 26 % ,                                                  D ) None of these ,

Correct Answer : -   C ) 26 % ,

Solution : -

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