Which is not a tranquilizer ?

Options

A. Luminal
B. Seconal
C. Valium
D. Bithional

Answer

To determine which option is not a tranquilizer, we can analyze the provided options: Luminol, Seconal, Valium, and Bithynol.

### Step-by-Step Solution:

1. **Define Tranquilizers**: Tranquilizers are medications that act on the central nervous system to induce relaxation, reduce anxiety, and promote calmness.

2. **Analyze Each Option**:
- **Luminol**: This is known to have a calming effect and is used to reduce anxiety. Therefore, it is a tranquilizer.
- **Seconal**: This medication is often used to induce sleep and is known for its calming effects. Hence, it is also a tranquilizer.
- **Valium**: Valium is widely recognized as a tranquilizer and is used to treat anxiety and panic disorders. It acts on the brain to produce a calming effect.
- **Bithynol**: This substance is a bacteriostatic agent, meaning it inhibits the growth of bacteria. It is not used for calming effects or anxiety reduction.

3. **Conclusion**: Among the options given, Bithynol is the only one that is not a tranquilizer. It is primarily used in products like deodorants and shampoos for its antibacterial properties.

### Final Answer:
**Bithynol is not a tranquilizer.**

---