A : 2-methyl propanal can give Cannizzaro reaction as well as aldol condensation.
R : It has `alpha`-hydrogen atom.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is false statement but Reason is true, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).

Answer

To analyze the statement given in the question, we need to evaluate both parts: A (the assertion) and R (the reason).

### Step 1: Understanding 2-Methylpropanal
2-Methylpropanal, also known as isobutyraldehyde, has the following structure:

```
CH3
|
CH3-C-CHO
|
H
```

In this structure, we can see that it has a carbonyl group (C=O) which is characteristic of aldehydes.

### Step 2: Cannizzaro Reaction
The Cannizzaro reaction occurs in aldehydes that do not have alpha-hydrogens. In this reaction, one molecule of the aldehyde is oxidized to a carboxylic acid while another is reduced to an alcohol.

Since 2-methylpropanal has no alpha-hydrogens (the carbon adjacent to the carbonyl carbon does not have any hydrogen atoms), it can undergo the Cannizzaro reaction.

### Step 3: Aldol Condensation
Aldol condensation is a reaction that occurs when aldehydes or ketones with alpha-hydrogens react in the presence of a base to form β-hydroxy aldehydes or ketones, which can further dehydrate to form α,β-unsaturated carbonyl compounds.

Since 2-methylpropanal has alpha-hydrogens (the carbon adjacent to the carbonyl carbon has hydrogen atoms), it can undergo aldol condensation.

### Step 4: Conclusion
From the analysis:
- The assertion (A) is true: 2-methylpropanal can indeed undergo both Cannizzaro reaction and aldol condensation.
- The reason (R) is false: The reason states that it has alpha-hydrogen atoms, which is actually why it can undergo aldol condensation, but it does not explain why it can undergo Cannizzaro reaction, as Cannizzaro reaction is applicable to aldehydes without alpha-hydrogens.

### Final Answer
- Assertion (A) is true.
- Reason (R) is false.