Question

Which of the following molecules contain sulfur atoms in their structure?
I. Morphine
II. Heroin
III. Penicillin
IV. Terpinenol
V. Cimetidine

• A. I, IV
• B. II, III
• C. III, V
• D. IV, V

Hint:

To identify sulfur-containing molecules, look for thiol (-SH) or sulfonyl (-SO\(_2\)) groups in the structure.

Answer 1

The Correct Option is C

- Penicillin contains sulfur in the β-lactam ring.
- Cimetidine has a thioether (-S) functional group.
- Morphine, Heroin, and Terpinenol do not contain sulfur. Thus, the correct answer is (III) Penicillin and (V) Cimetidine.