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Question

Assertion :A current of 96.5 ampere is passed into aqueous AgNO3 solution for 100 second. The weight of silver deposited is 10.8 g. (Atomic weight of Ag=108). Reason: The mass of a substance deposited during the electrolysis of an electrolyte is inversely proportional to the quantity of electricity passing through the electrolyte.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is C Assertion is correct but Reason is incorrect
Using the formula, w=zIt
where, w = weight deposit
z = Equiv96500
I = current
t = time
on putting the values, we get
weight of Ag deposited= 10.8g
so, assertion is correct;
According to Faraday's law, the mass of substance deposited is directly proportional to the quantity of current pass through the electrolyte
hence, the reason is incorrect.

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