Chlorine forms addition compound with

Options

A. unsatured hydyocarbons
B. carbon monoxide
C. sulphur dioxide
D. all of these

Explanation

To determine the compounds that chlorine forms addition compounds with, we can analyze the reactions of chlorine with various types of compounds.

### Step-by-Step Solution:

1. **Identify the Types of Compounds**:
- Chlorine can react with unsaturated hydrocarbons (like alkenes), carbon monoxide (CO), and sulfur dioxide (SO2).

2. **Reactions with Unsaturated Hydrocarbons**:
- Consider an unsaturated hydrocarbon, such as ethylene (C2H4).
- The reaction can be represented as:
\[ \text{C}_2\text{H}_4 + \text{Cl}_2 \rightarrow \text{C}_2\text{H}_4\text{Cl}_2 \]
- This results in the formation of 1,2-dichloroethane, which is an addition compound.

3. **Reactions with Carbon Monoxide**:
- Chlorine can react with carbon monoxide as follows:
\[ \text{CO} + \text{Cl}_2 \rightarrow \text{CCl}_2\text{O} \]
- This forms an addition compound known as phosgene.

4. **Reactions with Sulfur Dioxide**:
- Chlorine reacts with sulfur dioxide to form sulfuryl chloride:
\[ \text{SO}_2 + \text{Cl}_2 \rightarrow \text{SO}_2\text{Cl}_2 \]
- This is also an addition compound.

5. **Conclusion**:
- Since chlorine forms addition compounds with all three types of compounds (unsaturated hydrocarbons, carbon monoxide, and sulfur dioxide), the answer is that chlorine forms addition compounds with all of them.

### Final Answer:
Chlorine forms addition compounds with **all of them** (unsaturated hydrocarbons, carbon monoxide, and sulfur dioxide).

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