Assertion `:-` Fire in reaction between saline hydride and water
can not be extinguished by `CO_(2)`.
Reason `:-` `CO_(2)` gets reduced by metal hydride.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that fire in the reaction between saline hydrides and water cannot be extinguished by CO₂.
- Saline hydrides (like lithium hydride, LiH) react vigorously with water to produce hydrogen gas (H₂) and a hydroxide (like LiOH). The reaction is exothermic, meaning it releases a significant amount of heat, which can ignite the hydrogen gas produced.

2. **Understanding the Reason:**
- The reason states that CO₂ gets reduced by metal hydrides.
- When metal hydrides react with CO₂ at high temperatures, they can reduce CO₂ to form carbonates or formate salts. For example, LiH can react with CO₂ to produce lithium formate (HCOOLi) and release hydrogen gas.

3. **Analyzing the Relationship:**
- Since saline hydrides produce hydrogen gas when they react with water, and this hydrogen can catch fire due to the heat released, it is indeed true that CO₂ cannot extinguish the fire caused by the hydrogen. This is because CO₂ would react with the metal hydride instead of acting as an extinguishing agent.
- The reason is also true as CO₂ can be reduced by metal hydrides, which supports the assertion.

4. **Conclusion:**
- Both the assertion and the reason are true. The reason correctly explains why CO₂ cannot extinguish the fire caused by the reaction of saline hydrides with water.

### Final Answer:
Both the assertion and the reason are true, and the reason is the correct explanation for the assertion.

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