Silver Mirror test is given by which one of the following compounds ?

Options

A. Acetaldehyde
B. Acetone
C. Formaldehyde
D. Benzophenone

Explanation

To determine which compounds give the silver mirror test, we need to analyze the options provided:

1. **Understanding the Silver Mirror Test**:
- The silver mirror test is a qualitative test used to identify aldehydes. It involves the use of Tollen's reagent (Ag(NH3)2^+), which reacts with aldehydes to produce a silver mirror on the inner surface of the test tube.

2. **Analyzing the Given Compounds**:
- **Option 1: Acetaldehyde (CH3CHO)**:
- Acetaldehyde is an aldehyde. When it reacts with Tollen's reagent, it will reduce the silver ion to metallic silver, resulting in a silver mirror.
- **Option 2: Acetone (CH3COCH3)**:
- Acetone is a ketone and does not react with Tollen's reagent. Therefore, it does not give a silver mirror test.
- **Option 3: Formaldehyde (HCHO)**:
- Formaldehyde is also an aldehyde. It will similarly react with Tollen's reagent to produce a silver mirror.
- **Option 4: Benzophenone (C6H5)2CO**:
- Benzophenone is a ketone and will not react with Tollen's reagent, thus it does not give a silver mirror test.

3. **Conclusion**:
- The compounds that give the silver mirror test are **Acetaldehyde (Option 1)** and **Formaldehyde (Option 3)**.

### Final Answer:
The compounds that give the silver mirror test are Acetaldehyde and Formaldehyde.

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