Assertion: Main constituent of human urine is ammonia.
Reason: If human urine is allowed to stand for some time, it smells strongly of ammonia.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(d) If both the Assertion and Reason are incorrect.
Explanation:
Urea is the chief nitrogenous constituent of human urine, though it possesses small amount of ammonia. But when the urine is allowed to stand for sometime, bacterial degradation occurs and it leads to the production of ammonia from urine. And thus it smells strongly.