Two test tubes contain solutions of potassium iodide (KI) and potassium bromide (KBr) arbitrarily.
How will you find which solution contains which salt ?

Explanation

To determine which solution contains potassium iodide (KI) and which contains potassium bromide (KBr), we can follow these steps:

### Step-by-Step Solution:

1. **Prepare the Test Tubes**: Label the two test tubes as Test Tube 1 and Test Tube 2. Ensure that you have solutions of potassium iodide and potassium bromide in them, but do not know which is in which.

2. **Add Carbon Tetrachloride (CCl4)**: Add a few drops of carbon tetrachloride (CCl4) to both test tubes. CCl4 is a dense, oily liquid that will form a separate layer below the aqueous solution.

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