Death while sleeping in closed room with burning coal furnace is due to

Options

A. `CO_(2)`
B. `CO`
C. `"CCl"_(4)`
D. `SO_(2)`

Answer

### Step-by-Step Solution:

1. **Understanding the Scenario**: The question describes a situation where someone dies while sleeping in a closed room with a burning coal furnace. We need to identify the gas responsible for this death.

2. **Identifying the Products of Coal Burning**: When coal (or charcoal) is burned, it produces various gases. The primary gases of concern are carbon dioxide (CO2) and carbon monoxide (CO).

3. **Focusing on Carbon Monoxide**: Among the gases produced, carbon monoxide is particularly dangerous. It is a colorless, odorless gas that can accumulate in closed spaces.

4. **Understanding the Affinity of Carbon Monoxide**: Carbon monoxide has a very high affinity for hemoglobin in the blood—about 200 times greater than that of oxygen (O2). This means that when CO is inhaled, it binds to hemoglobin more readily than oxygen does.

5. **Formation of Carboxyhemoglobin**: When carbon monoxide binds to hemoglobin, it forms a compound called carboxyhemoglobin. This compound prevents hemoglobin from carrying oxygen effectively.

6. **Consequences of Carboxyhemoglobin Formation**: With hemoglobin unable to transport sufficient oxygen to the body's tissues, the body's cells become starved of oxygen, leading to suffocation and ultimately death.

7. **Conclusion**: Based on the above reasoning, the gas responsible for death while sleeping in a closed room with a burning coal furnace is carbon monoxide (CO). Therefore, the correct answer is option B, which is CO.