Question

Which of the following is an alkaloid?

• A. Nicotine
• B. Atropine
• C. Cocaine
• D. All of these

Hint:

Alkaloids are nitrogen-containing compounds that affect the human body, and many have medicinal uses. Examples include nicotine, atropine, and cocaine.

Answer 1

The Correct Option is D

Step 1: Understanding alkaloids.
Alkaloids are naturally occurring compounds that contain nitrogen and have pronounced physiological effects on humans and animals. Nicotine, atropine, and cocaine are all alkaloids. Step 2: Analysis of options.
(A) Nicotine: Nicotine is an alkaloid found in tobacco and is known for its stimulating effects.
(B) Atropine: Atropine is an alkaloid derived from the plant belladonna and is used as a medication to treat bradycardia.
(C) Cocaine: Cocaine is an alkaloid derived from the coca plant, and it has stimulant and anesthetic properties.
(D) All of these: Correct — All of the substances listed are alkaloids.
Step 3: Conclusion.
The correct answer is (D) because all the options listed are alkaloids.