Which of the following compound does not react with Tollen's reagent?

Options

A.
B.
C.
D.

Answer

To determine which compound does not react with Tollen's reagent, we first need to understand what Tollen's reagent is and which types of compounds it reacts with.

### Step 1: Understanding Tollen's Reagent
Tollen's reagent is an ammoniacal solution of silver nitrate (AgNO₃). It is used primarily to test for the presence of aldehydes. When an aldehyde is present, it will reduce the silver ions (Ag⁺) in the reagent to metallic silver (Ag), resulting in a silver mirror on the test tube.

### Step 2: Identify the Reactivity
Aldehydes are known to react with Tollen's reagent because they can be oxidized to carboxylic acids. In contrast, ketones do not react with Tollen's reagent because they lack the necessary hydrogen atom attached to the carbonyl carbon that is present in aldehydes.

### Step 3: Analyze the Given Compounds
Now, we need to analyze the compounds provided in the question. We will check each compound to see if it is an aldehyde or a ketone:
- **Aldehydes** (RCHO) will react with Tollen's reagent.
- **Ketones** (RC(=O)R') will not react with Tollen's reagent.

### Step 4: Conclusion
Based on the above analysis, the compound that does not react with Tollen's reagent will be the one that is a ketone. Therefore, if one of the options is a ketone, that will be the correct answer.

### Final Answer
The compound that does not react with Tollen's reagent is the ketone.

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