Assertion :In PCT, glomerular filtrate becomes hypertonic Reason: $H C O_{3}$ ' is absorbed in PCT

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In PCT, glomerular filtrate becomes hypertonic because carbonate is absorbed in PCT. In PCT 70-80 percent of electrolytes and water are reabsorbed and carbonates absorption also takes place thus making the solution hypertonic.
So the correct answer is Option "A".

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