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Question

Assertion :Conductivity of an electrolyte increases with decrease in concentration. Reason: Number of ions per unit volume decreases on dilution.


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 D Assertion is incorrect but Reason is correct
The number of ions per unit volume carrying the current decreases on dilution, so conductivity always decreases with decrease in concentration. 

However, molar conductivity increases with dilution. Hence the number of ions per unit volume that carry charge in a solution decreases.

Assertion is incorrect but Reason is correct

Chemistry

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