Question

The urine on standing gives a pungent smell in public urinals generally, is due to

• A. Conversion of urea into ammonia by bacteria
• B. Conversion of both urea and uric acid into ammonia
• C. Conversion of uric acid into ammonia by orhithine cycle
• D. None of the above

Answer 1

The correct option is A Conversion of urea into ammonia by bacteria

The main component of urine is urea. If urea stands for a long time or as it goes stale, bacteria convert it back into ammonia, which gives the familiar pungent smell.
Therefore, the correct answer is option A.