The pair of compounds in which both the compounds give positive test with Tollen's reagent is

Options

A. Glucose and Sucrose
B. Fructose and Sucrose
C. Acetophenone and Hexanal
D. Glucose and Fructose

Explanation

To determine the pair of compounds that both give a positive test with Tollen's reagent, we need to understand the nature of Tollen's reagent and the types of compounds that react with it.

### Step-by-Step Solution:

1. **Understanding Tollen's Reagent**:
Tollen's reagent is a solution of silver nitrate (AgNO3) in ammonia (NH4OH). It is used to test for aldehydes, which can be oxidized to carboxylic acids, while reducing the silver ion to metallic silver.

2. **Identifying Compounds**:
Aldehydes are known to give a positive test with Tollen's reagent. Ketones, on the other hand, generally do not react with Tollen's reagent unless they have specific structural features (like being alpha-hydroxy ketones).

3. **Finding Suitable Compounds**:
We need to find a pair of compounds where both are aldehydes or one is an aldehyde and the other is a compound that can also give a positive Tollen's test.

4. **Examples of Compounds**:
Common aldehydes include formaldehyde (HCHO), acetaldehyde (CH3CHO), and benzaldehyde (C6H5CHO). A common ketone that can give a positive test is an alpha-hydroxy ketone like diacetone alcohol.

5. **Conclusion**:
A suitable pair of compounds that both give a positive test with Tollen's reagent could be:
- Acetaldehyde (CH3CHO) - an aldehyde
- Benzaldehyde (C6H5CHO) - another aldehyde

### Final Answer:
The pair of compounds in which both compounds give a positive test with Tollen's reagent is Acetaldehyde (CH3CHO) and Benzaldehyde (C6H5CHO).

---