Carbon monoxide is not

Options

A. a reducing agent
B. a good oxidising agent
C. neutral to litums
D. posisonous in nature

Explanation

To determine which statement about carbon monoxide (CO) is not true, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Carbon Monoxide as a Reducing Agent:**
- Carbon monoxide is known to act as a reducing agent. It can reduce metal oxides to metals, particularly those metals that are less reactive than carbon itself.
- **Conclusion:** Option 1 (Carbon monoxide is a reducing agent) is **true**.

2. **Evaluating Carbon Monoxide as an Oxidizing Agent:**
- An oxidizing agent is a substance that gains electrons in a chemical reaction. Since carbon monoxide is primarily a reducing agent, it cannot simultaneously be a good oxidizing agent.
- **Conclusion:** Option 2 (Carbon monoxide is a good oxidizing agent) is **false**.

3. **Assessing Neutrality to Litmus:**
- Carbon monoxide is a neutral compound, meaning it does not affect the pH of a solution and does not change the color of litmus paper.
- **Conclusion:** Option 3 (It turns neutral to litmus) is **true**.

4. **Considering the Toxicity of Carbon Monoxide:**
- Carbon monoxide is indeed poisonous. It binds to hemoglobin in the blood with a much higher affinity than oxygen, which can lead to serious health issues and even death.
- **Conclusion:** Option 4 (Poisonous in nature) is **true**.

### Final Answer:
Based on the analysis, the statement that is **not** true about carbon monoxide is:
**Option 2: Carbon monoxide is a good oxidizing agent.**

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