A: Aniline does not undergo Friedel Craft's reaction.
R: `NH_(2)` group of Aniline is deactivating group for all reactions

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 regarding Aniline and its behavior in Friedel-Crafts reactions, we can break down the solution into clear steps:

### Step 1: Understand the Assertion
The assertion states that "Aniline does not undergo Friedel-Crafts reaction." This is a factual statement based on the chemical behavior of Aniline.

### Step 2: Analyze the Reason
The reason provided is that "the NH2 group of Aniline is a deactivating group for all reactions." We need to evaluate whether this statement is true or false.

### Step 3: Examine the Structure of Aniline
Aniline has the structure C6H5NH2, where the amino group (NH2) is attached to a benzene ring. The NH2 group has lone pairs of electrons that can donate to the aromatic ring.

### Step 4: Determine the Effect of the NH2 Group
The NH2 group is actually an activating group for electrophilic aromatic substitution reactions. It donates electron density to the benzene ring, making it more reactive towards electrophiles.

### Step 5: Understand the Friedel-Crafts Reaction
In Friedel-Crafts reactions, a Lewis acid (like AlCl3) is used to generate an electrophile. However, the NH2 group can form a complex with AlCl3, which prevents the reaction from proceeding.

### Step 6: Conclusion
While the assertion that Aniline does not undergo Friedel-Crafts reactions is true, the reason given is incorrect. The NH2 group is not a deactivating group; it is an activating group. Therefore, the correct conclusion is that the assertion is true, but the reason is false.

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

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