Which set of drugs is incorrectly matched with its group ?

Options

A. Opioids-Morphine, Heroin
B. Coca alkaloids - Cocaine
C. Cannabinoids - Barbiturates, LSD
D. Stimulants -Caffeine, Cocaine

Answer

To solve the question "Which set of drugs is incorrectly matched with its group?", we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the first option**:
- **Group**: Opioids
- **Drugs**: Morphine and Heroin
- **Analysis**: Opioids are indeed a class of drugs that includes Morphine and Heroin, which are used primarily for pain relief. This pair is correctly matched.

2. **Identify the second option**:
- **Group**: Coca alkaloids
- **Drugs**: Cocaine
- **Analysis**: Cocaine is a well-known coca alkaloid derived from the coca plant. This pair is also correctly matched.

3. **Identify the third option**:
- **Group**: Cannabinoids
- **Drugs**: Barbiturates and LSD
- **Analysis**: Cannabinoids are compounds found in cannabis, while Barbiturates and LSD belong to different classes of drugs (Barbiturates are sedatives and LSD is a hallucinogen). Therefore, this pair is incorrectly matched.

4. **Identify the fourth option**:
- **Group**: Stimulants
- **Drugs**: Caffeine and Cocaine
- **Analysis**: Both Caffeine and Cocaine are classified as stimulants that increase brain and nervous system activity. This pair is correctly matched.

### Conclusion:
The incorrectly matched set of drugs is from the **third option**: Cannabinoids matched with Barbiturates and LSD.

### Final Answer:
**Option 3** is the incorrectly matched pair.

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