Assertion : Reaction with `NaHCO_(3)` can be used as a test to distinguish between alcohols and acids.
Reaction : Both alcohols and acids give brisk effervescence with `NaHCO_(3)`.

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 analyze the given assertion and reaction, we can break it down step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the reaction with sodium bicarbonate (NaHCO₃) can be used to distinguish between alcohols and acids.

2. **Understanding the Reaction**:
- Sodium bicarbonate (NaHCO₃) reacts with acids to produce carbon dioxide (CO₂), water (H₂O), and a salt. This reaction is characterized by brisk effervescence due to the release of CO₂ gas.
- For example, when acetic acid (CH₃COOH) reacts with NaHCO₃, the reaction can be represented as:
\[ \text{CH}_3\text{COOH} + \text{NaHCO}_3 \rightarrow \text{CH}_3\text{COONa} + \text{CO}_2 + \text{H}_2\text{O} \]
- This results in the evolution of CO₂ gas, which is observed as brisk effervescence.

3. **Testing Alcohols**:
- Alcohols, such as ethanol (CH₃CH₂OH), do not react with sodium bicarbonate. Therefore, there is no production of CO₂ gas when alcohols are treated with NaHCO₃.
- The lack of reaction can be represented as:
\[ \text{CH}_3\text{CH}_2\text{OH} + \text{NaHCO}_3 \rightarrow \text{No Reaction} \]

4. **Conclusion**:
- Since acids react with NaHCO₃ to produce CO₂ (brisk effervescence), while alcohols do not react at all, we can conclude that the assertion is true.
- However, the reason provided in the assertion is false because it incorrectly states that both alcohols and acids give brisk effervescence with NaHCO₃.

5. **Final Answer**:
- The assertion is true, but the reason is false. Therefore, the correct option is that the assertion is true, but the reason is incorrect.