In the preparation of nitric acid from `KNO_3`, concentrated hydrochloric acid is not used in place of concentrated sulphuric acid. Give reason. 

Explanation

To understand why concentrated hydrochloric acid (HCl) cannot be used in place of concentrated sulfuric acid (H₂SO₄) in the preparation of nitric acid (HNO₃) from potassium nitrate (KNO₃), we can break down the reasoning step by step.

### Step-by-Step Solution:

1. **Understanding the Reaction**:
The reaction for the preparation of nitric acid from potassium nitrate and concentrated sulfuric acid is as follows:
\[
\text{KNO}_3 + \text{H}_2\text{SO}_4 \rightarrow \text{KHSO}_4 + \text{HNO}_3
...