Assertion : A `0.1%` solution of phenol is an antiseptic
Reason : Phenol is stored in dark bottles.

Options

A. If both Assertion and Reason true but Reason is a correct explanation of Assertion .
B. If both Assertion and Reason true but Reason is not a correct explanation of Assertion .
C. If Assertion is true and Reason is wrong .
D. If Assertion is wrong and Reason is wrong .

Answer

To solve the question regarding the assertion and reason about phenol, we will analyze both statements step by step.

### Step 1: Understand the Assertion
The assertion states that a `0.1%` solution of phenol is an antiseptic.
- **Explanation**: Antiseptics are substances that prevent the growth of disease-causing microorganisms. A `0.1%` solution of phenol is effective in killing bacteria and preventing infection when applied to living tissues. This is due to phenol's antimicrobial properties.

### Step 2: Understand the Reason
The reason given is that phenol is stored in dark bottles.
- **Explanation**: Phenol is sensitive to light and can undergo oxidation when exposed to air and light. This oxidation can lead to the formation of quinone, which is a colored compound. To prevent this oxidation and maintain the stability of phenol, it is stored in dark bottles.

### Step 3: Analyze the Relationship
Now we need to determine if the reason correctly explains the assertion.
- **Assertion Validity**: The assertion is true; a `0.1%` solution of phenol does act as an antiseptic.
- **Reason Validity**: The reason is also true; phenol is indeed stored in dark bottles to prevent oxidation.

### Step 4: Conclusion
While both the assertion and reason are true, the reason does not directly explain why a `0.1%` solution of phenol is an antiseptic. The antiseptic property is due to phenol's chemical nature and its ability to kill microorganisms, not because it is stored in dark bottles.

### Final Answer
Both the assertion and reason are true, but the reason is not the correct explanation for the assertion. Therefore, the correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

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