Give a chemical test to distinguish following gases.
`CO_2` and `NO_2`

Explanation

To distinguish between carbon dioxide (CO₂) and nitrogen dioxide (NO₂), we can perform the following chemical tests:

### Step 1: Test for Carbon Dioxide (CO₂)
1. **Prepare Lime Water**: Take a small amount of lime water, which is a dilute solution of calcium hydroxide (Ca(OH)₂).
2. **Pass the Gas Through Lime Water**: Introduce the gas sample into the lime water.
3. **Observe the Reaction**: If the gas is carbon dioxide, the lime water will turn milky.
4. **Chemical Reaction**: This occurs due to the formation of calcium carbonate (CaCO₃), which is a white precipitate:
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