Which of the following involves both neutralisation as well as precipitation ?

Options

A. reaction between baking powder and `H_2SO_4`
B. reaction between `BaCl_2 and Na_2SO_4`
C. reaction between `AgNO_3 and HCl`
D. reaction between slaked lime and `H_2SO_4`

Explanation

To determine which of the given reactions involves both neutralization and precipitation, we need to analyze each option carefully. Here’s a step-by-step solution:

### Step 1: Understand Neutralization
Neutralization is a chemical reaction between an acid and a base that produces salt and water. The general reaction can be represented as:
\[ \text{Acid} + \text{Base} \rightarrow \text{Salt} + \text{Water} \]

### Step 2: Understand Precipitation
Precipitation occurs when two soluble substances react to form an insoluble solid (precipitate). This can be represented as:
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