Mixture of nitrobenzene and aniline can be separated by

Explanation

To separate a mixture of nitrobenzene and aniline, we can follow these steps:

### Step 1: Dissolution in Dilute HCl
- **Action**: Add dilute hydrochloric acid (HCl) to the mixture of nitrobenzene and aniline.
- **Reason**: Aniline is a basic compound and will react with the dilute HCl to form anilinium chloride, which is soluble in water. Nitrobenzene, on the other hand, is not basic and will not dissolve in dilute HCl.

### Step 2: Separation of Nitrobenzene
- **Action**: After adding dilute HCl, shake the mixture with an organic solvent like ether.
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