Assertion. The pH at the end point of any acid-base titration is always 7.
Reason. The aqueous solution of a salt is always neutral.

Options

A. If both assertion and reason are true, and reason is the true explanation of the assertion.
B. If both assertion and reason are true, but reason is not the true explanation of the assertion.
C. If aasertion 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:

**Assertion:** The pH at the end point of any acid-base titration is always 7.
**Reason:** The aqueous solution of a salt is always neutral.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that the pH at the end point of any acid-base titration is always 7.
- This is only true for the titration of a strong acid with a strong base. For example, titrating hydrochloric acid (HCl) with sodium hydroxide (NaOH) will yield a neutral solution at the equivalence point, resulting in a pH of 7.
- However, if a weak acid (like acetic acid) is titrated with a strong base (like NaOH), the pH at the end point will be greater than 7. Conversely, if a strong acid is titrated with a weak base, the pH at the end point will be less than 7.
- Therefore, the assertion is **false** as it does not hold true for all acid-base titrations.

2. **Understanding the Reason:**
- The reason states that the aqueous solution of a salt is always neutral.
- This statement is incorrect. The pH of a salt solution depends on the nature of the acid and base from which it is derived.
- For example, a salt formed from a strong acid and a weak base (like ammonium chloride from hydrochloric acid and ammonia) will result in an acidic solution (pH < 7). Conversely, a salt from a weak acid and a strong base (like sodium acetate from acetic acid and sodium hydroxide) will yield a basic solution (pH > 7).
- Therefore, the reason is also **false**.

3. **Conclusion:**
- Since both the assertion and the reason are false, the correct answer is that both statements are incorrect.

### Final Answer:
Both the assertion and the reason are false.

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