Which of the following statement is wrong regarding carbon
mono`-`oxide.

Options

A. it is reducing agent
B. it is complexing agent
C. it is poisionous
D. it is non-inflamable

Explanation

To determine which statement is wrong regarding carbon monoxide (CO), let's analyze each statement step by step.

### Step 1: Analyze the First Statement
**Statement:** Carbon monoxide is a reducing agent.
**Analysis:** Carbon monoxide (CO) can act as a reducing agent in chemical reactions. It can reduce metal oxides to metals by donating electrons and getting oxidized to carbon dioxide (CO2).
**Conclusion:** This statement is correct.

### Step 2: Analyze the Second Statement
**Statement:** Carbon monoxide is a complexing agent.
**Analysis:** Carbon monoxide can act as a ligand due to the presence of a lone pair of electrons on the carbon atom. It can form coordinate bonds with certain metals, thus acting as a complexing agent.
**Conclusion:** This statement is also correct.

### Step 3: Analyze the Third Statement
**Statement:** Carbon monoxide is poisonous.
**Analysis:** Carbon monoxide is indeed a poisonous gas. It binds with hemoglobin in the blood to form carboxyhemoglobin, which prevents the blood from carrying oxygen, leading to suffocation and potentially death.
**Conclusion:** This statement is correct.

### Step 4: Analyze the Fourth Statement
**Statement:** Carbon monoxide is non-inflammable.
**Analysis:** This statement is incorrect. Carbon monoxide is actually a flammable gas and can easily catch fire. It is not non-inflammable; rather, it is combustible.
**Conclusion:** This statement is wrong.

### Final Answer
The wrong statement regarding carbon monoxide is that it is non-inflammable.

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