Assertion: Cyclohexanone exhibits keto-enol tautomerism.
Reason: In cyclohexanone, one form contains the keto group `(C=O)` while other contains enolic group `(-C=C-OH)`.

Options

A. if both assertion and reason are true and reason is thr correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reson are false.

Explanation

To solve the question regarding the assertion and reason about cyclohexanone and its keto-enol tautomerism, we will analyze both statements step by step.

### Step 1: Understanding the Assertion
The assertion states that "Cyclohexanone exhibits keto-enol tautomerism."

**Explanation**:
- Cyclohexanone is a ketone with the molecular formula C6H10O.
- Tautomerism is a chemical phenomenon where two isomers (tautomers) can readily interconvert. In the case of keto-enol tautomerism, one form is a keto form (with a carbonyl group, C=O) and the other is an enol form (with a carbon-carbon double bond and an alcohol group, -C=C-OH).

**Hint**: Remember that tautomerism involves the shifting of a hydrogen atom and a change in the bonding structure between the two forms.

### Step 2: Understanding the Reason
The reason states that "In cyclohexanone, one form contains the keto group (C=O) while the other contains the enolic group (-C=C-OH)."

**Explanation**:
- In cyclohexanone, the keto form has a carbonyl group (C=O), which is typical for ketones.
- The enol form has a double bond between carbon atoms and an -OH group, which is characteristic of enols.
- This confirms that cyclohexanone can exist in both forms, supporting the assertion.

**Hint**: Identify the structural differences between the keto and enol forms to understand how they interconvert.

### Step 3: Conclusion
Both the assertion and reason are true. Cyclohexanone indeed exhibits keto-enol tautomerism, and the reason correctly describes the structural forms involved in this tautomerism.

**Final Answer**: Both the assertion and reason are true, and the reason correctly explains the assertion.

### Summary of Steps:
1. Understand the concept of keto-enol tautomerism.
2. Analyze the assertion about cyclohexanone.
3. Examine the reason and its explanation of the forms involved.
4. Conclude that both statements are true and related.