Which of the following organic compound exhibits positive Fehling test as well as iodoform test?

Options

A. propanol
B. Propanone
C. Butane-2-ol
D. Ethanal.

Explanation

To determine which organic compound exhibits both a positive Fehling test and a positive iodoform test, we need to analyze the characteristics of these tests and the given options.

### Step-by-Step Solution:

1. **Understanding the Fehling Test**:
- The Fehling test is used to identify aldehydes. A positive Fehling test indicates the presence of a carbonyl group (C=O) in the form of an aldehyde (–CHO). Therefore, any compound that contains an aldehyde functional group will give a positive result in this test.

2. **Understanding the Iodoform Test**:
- The iodoform test is used to identify methyl ketones (compounds with the structure CH3CO–) and some alcohols that can be oxidized to methyl ketones. A positive iodoform test indicates the presence of a methyl group adjacent to a carbonyl group (C=O).

3. **Analyzing the Options**:
- **Option 1: Propanol (CH3-CH2-CH2OH)**:
- Structure: This compound is an alcohol and does not contain a carbonyl group (C=O) or an aldehyde group (–CHO).
- Conclusion: **Does not give a positive Fehling test or iodoform test.**

- **Option 2: Propanone (CH3-CO-CH3)**:
- Structure: This compound is a ketone. It contains a carbonyl group but does not have an aldehyde group.
- Conclusion: **Gives a positive iodoform test but not a positive Fehling test.**

- **Option 3: Butan-2-ol (CH3-CHOH-CH2-CH3)**:
- Structure: This compound is an alcohol and does not contain a carbonyl group or an aldehyde group.
- Conclusion: **Does not give a positive Fehling test or iodoform test.**

- **Option 4: Ethanal (Acetaldehyde, CH3-CHO)**:
- Structure: This compound contains an aldehyde group (–CHO) and also has a methyl group adjacent to a carbonyl group (C=O).
- Conclusion: **Gives both a positive Fehling test and a positive iodoform test.**

4. **Final Answer**:
- The organic compound that exhibits both a positive Fehling test and a positive iodoform test is **Option 4: Ethanal (Acetaldehyde)**.