Official Answer Key & Detailed Solution
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Correct Answer: Option (C) — A is true but R is false
Concept & Option Breakdown
Standard Reference VerifiedAssertion (A) is true: Alcohol (such as whisky) acts as a potent diuretic, promoting diuresis and frequent urination.
Reason (R) is false: Alcohol suppresses and inhibits the release of vasopressin (antidiuretic hormone - ADH) from the pituitary gland. With lower ADH, renal collecting ducts cannot reabsorb water, causing excessive excretion of dilute urine.
Vasopressin stops urination (anti-diuretic). Since alcohol increases urination, it must INHIBIT (not speed up) vasopressin.
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