Give an example of reaction where Two gases on combination give white solid.

Explanation

To answer the question, "Give an example of a reaction where two gases on combination give a white solid," we can follow these steps:

### Step 1: Identify the Reactants
We need to find two gases that can react together to form a solid. In this case, we can use ammonia (NH₃) and hydrogen chloride (HCl) as our reactants. Both of these substances are gases at room temperature.

### Step 2: Write the Chemical Reaction
The reaction between ammonia and hydrogen chloride can be represented by the following chemical equation:

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