A : Primary alcohols on oxidation give aldehydes.
R : Aldehydes can be oxidized into the corresponding carboxylic acids.

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 true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).

Answer

To analyze the statements provided in the question, we will evaluate both statements A and R step by step.

### Step 1: Evaluate Statement A
**Statement A:** Primary alcohols on oxidation give aldehydes.

- **Explanation:** Primary alcohols have the general structure RCH2OH. When they undergo oxidation, especially with a mild oxidizing agent (like PCC or PDC), they are converted into aldehydes (RCHO). This is a well-known reaction in organic chemistry, confirming that primary alcohols can indeed be oxidized to form aldehydes.

### Step 2: Evaluate Statement R
**Statement R:** Aldehydes can be oxidized into the corresponding carboxylic acids.

- **Explanation:** Aldehydes have the structure RCHO. When aldehydes are subjected to oxidation (using stronger oxidizing agents such as KMnO4 or CrO3), they can be converted into carboxylic acids (RCOOH). This is also a standard reaction in organic chemistry, confirming that aldehydes can be oxidized to form carboxylic acids.

### Step 3: Conclusion
Both statements A and R are true. Moreover, R provides a correct explanation for A. Therefore, the correct answer is that both statements are true and R is the correct explanation for A.

### Final Answer:
Both A and R are true statements, and R is the correct explanation for A.

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