Which of the following is used as insecticide:

Options

A. `D.D.T`
B. Chloritone
C. Chloropicrin
D. A and C both

Answer

To determine which of the given options is used as an insecticide, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) DDT
- B) Chloritone
- C) Chloropicrine
- D) (Both A and C)

2. **Analyze Option A: DDT**:
- DDT stands for Dichlorodiphenyltrichloroethane.
- It is widely known and used as an insecticide, particularly in agricultural practices.
- **Conclusion**: DDT is an insecticide.

3. **Analyze Option B: Chloritone**:
- Chloritone is not recognized as an insecticide.
- Instead, it is used as a preservative or sedative.
- **Conclusion**: Chloritone is not an insecticide.

4. **Analyze Option C: Chloropicrine**:
- Chloropicrine is known to be used as an insecticide.
- It is often utilized in agricultural settings to control pests.
- **Conclusion**: Chloropicrine is an insecticide.

5. **Evaluate Option D**:
- Option D states "Both A and C".
- Since both DDT (A) and Chloropicrine (C) are insecticides, this option is correct.

### Final Answer:
The correct answer is **D) Both A and C**.