Question

Which of the following is incorrect with reference to drug abuse?

• A. Cannabinoids affect cardiovascular system of the body.
• B. Heroin is extracted from the latex of Papaver somniferum.
• C. Nicotine is a very effective sedative and pain killer.
• D. Excessive dosage of coca alkaloid causes hallucinations.

Hint:

Nicotine is known to increase heart rate and act as a stimulant, whereas sedatives and pain killers help in relaxing the body and reducing pain.

Answer 1

The Correct Option is C

Step 1: Understanding each statement.
- Option 1: Cannabinoids primarily affect the central nervous system but can also influence the cardiovascular system.
- Option 2: Heroin is derived from the latex of Papaver somniferum (opium poppy).
- Option 3: Nicotine is a stimulant, not a sedative or pain killer.
- Option 4: Excessive dosage of coca alkaloid (cocaine) can indeed lead to hallucinations.
Conclusion:
Thus, the incorrect statement is option 3, as nicotine is a stimulant, not a sedative.
Final Answer: \[ \boxed{\text{The correct answer is (3) Nicotine is a very effective sedative and pain killer.}} \]