Chloroform by reacting with conc. HNO3 produces:

Options

A. Water gas
B. Laughing gas
C. Tear gas
D. Producer gas

Answer

To solve the question regarding the reaction of chloroform with concentrated HNO3, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are chloroform (CHCl3) and concentrated nitric acid (HNO3).

2. **Write the Reaction**:
- When chloroform reacts with concentrated HNO3, the reaction can be represented as:
\[ \text{CHCl}_3 + \text{HNO}_3 \rightarrow \text{CCl}_3\text{NO}_2 + \text{H}_2\text{O} \]
- Here, chloroform (CHCl3) is converted into chloropicrin (CCl3NO2) and water (H2O).

3. **Identify the Products**:
- The main product of this reaction is chloropicrin (CCl3NO2), which is also known as tear gas.

4. **Conclusion**:
- Therefore, the correct answer to the question is that chloroform reacts with concentrated HNO3 to produce tear gas.

### Final Answer:
- The product formed when chloroform reacts with concentrated HNO3 is **tear gas** (CCl3NO2).

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