A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains

Options

A. NaCl
B. HCl
C. LiCl
D. KCl

Explanation

To solve the question, we need to identify the solution that reacts with crushed egg-shells (which are primarily composed of calcium carbonate) to produce a gas that turns lime-water milky. Here’s the step-by-step solution:

### Step 1: Identify the Composition of Eggshells
Eggshells are primarily made of calcium carbonate (CaCO₃).

**Hint:** Remember that calcium carbonate is a common compound found in natural sources like eggshells and limestone.

### Step 2: Understand the Reaction with Acids
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