Question:
Which of the following molecules does not contain oxygen?
Which of the following molecules does not contain oxygen?
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To determine if a molecule contains oxygen, look for functional groups such as alcohols, aldehydes, ketones, or esters.
Updated On: Jan 27, 2026
- Serotonin
- Phenelzine
- Veronal
- Iproniazid
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The Correct Option is B
Solution and Explanation
Step 1: Identifying the presence of oxygen.
Serotonin, Veronal, and Iproniazid all contain oxygen atoms in their structures. Phenelzine does not contain oxygen.
Step 2: Analyzing the options.
(A) Serotonin: Contains oxygen.
(B) Phenelzine: Correct — Does not contain oxygen.
(C) Veronal: Contains oxygen.
(D) Iproniazid: Contains oxygen.
Step 3: Conclusion.
The correct answer is (B) Phenelzine, as it does not contain oxygen.
Serotonin, Veronal, and Iproniazid all contain oxygen atoms in their structures. Phenelzine does not contain oxygen.
Step 2: Analyzing the options.
(A) Serotonin: Contains oxygen.
(B) Phenelzine: Correct — Does not contain oxygen.
(C) Veronal: Contains oxygen.
(D) Iproniazid: Contains oxygen.
Step 3: Conclusion.
The correct answer is (B) Phenelzine, as it does not contain oxygen.
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