A: When `R_(3)C-NH_(2)` is oxidised with `KMnO_(4) R_(3)C-NO_(2)` is formed in good yield.
R: `KMnO_(4)`, always oxidises Amines to Nitro compounds.

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 solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that when `R₃C-NH₂` (a primary amine attached to a tertiary carbon) is oxidized with `KMnO₄`, it produces `R₃C-NO₂` (a nitro compound) in good yield.

### Step 2: Analyze the Reaction
When primary amines are oxidized with potassium permanganate (KMnO₄), the reaction can lead to the formation of nitro compounds, particularly when the amine is attached to a tertiary carbon.

### Step 3: Consider the Mechanism
1. **Oxidation of Primary Amines**: Primary amines can undergo oxidation with KMnO₄ to form hydroxylamines, which can further oxidize to nitroso compounds, and eventually to nitro compounds.
2. **Tertiary Carbon Influence**: The presence of a tertiary carbon (R₃C) influences the oxidation pathway, allowing the formation of nitro compounds directly from the primary amine.

### Step 4: Evaluate the Reason
The reason provided states that "KMnO₄ always oxidizes amines to nitro compounds." This is not entirely accurate, as not all amines are oxidized to nitro compounds. For example:
- Primary amines with one carbon yield nitro compounds.
- Primary amines with two carbons yield aldehydes.
- Primary amines attached to secondary carbons yield ketones.

### Step 5: Conclusion
Based on the analysis:
- The assertion is true: `R₃C-NH₂` can produce `R₃C-NO₂` upon oxidation with KMnO₄.
- The reason is false: KMnO₄ does not always oxidize amines to nitro compounds.

Thus, the correct conclusion is that the assertion is true, but the reason is false.

### Final Answer
The correct option is that the assertion is true, but the reason is false.

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