Assertion : A solution of carbon dioxide in water turns red litmus blue.
Reason : Carbon dioxide is basic oxide.

Options

A. If both assertion and reason are true and reason is the 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 reason are false.

Explanation

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

### Step 1: Analyze the Assertion
The assertion states that "A solution of carbon dioxide in water turns red litmus blue."

- When carbon dioxide (CO2) dissolves in water, it forms carbonic acid (H2CO3).
- Carbonic acid is an acid, which means it will not turn red litmus blue. Instead, it will keep the red litmus paper red, indicating that the solution is acidic.

**Conclusion for Assertion**: The assertion is **false**.

### Step 2: Analyze the Reason
The reason states that "Carbon dioxide is a basic oxide."

- Carbon dioxide is actually a non-metal oxide. Non-metal oxides are generally acidic in nature, not basic.
- Therefore, the statement that carbon dioxide is a basic oxide is incorrect.

**Conclusion for Reason**: The reason is also **false**.

### Final Conclusion
Both the assertion and the reason are false.

### Answer:
Both the assertion and the reason are incorrect.

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