How will you test aldehydes and ketones with:
Tollens' reagent

Explanation

To test aldehydes and ketones with Tollens' reagent, follow these steps:

### Step 1: Prepare Tollens' Reagent
Tollens' reagent is a solution of silver nitrate (AgNO3) in aqueous ammonia (NH3). To prepare it, mix silver nitrate solution with ammonia until the brown precipitate of silver oxide (Ag2O) dissolves, resulting in a clear solution.

### Step 2: Add the Sample
Take a small amount of the organic compound you want to test (either an aldehyde or a ketone) and add it to a test tube containing Tollens' reagent.

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