Match the column-I with column-II
`{:(,"Column-I",,"Column-II"),(a.,"Pyrolysis",(i),"Methaeglobinemia"),(b.,"Carbon monoxide",(ii),"Chronic exposure to arsenic"),(c.,"Blue baby syndrome",(iii),"Asphyxia and dizziness"),(d.,"Black foot disease",(iv),"Disposal of hospital waste"):}`

Options

A. a(iv), b(i), c(ii), d(iii)
B. a(i), b(iii), c(iv), d (ii)
C. a(iv), b(iii), c(i), d(ii)
D. a(iv), b(iii), c(i), d(ii)

Answer

To solve the matching question, we will analyze each item in Column-I and find the corresponding item in Column-II based on their definitions and associations.

### Step-by-Step Solution:

1. **Identify Pyrolysis**:
- Pyrolysis is a waste treatment method that involves the thermal decomposition of materials at high temperatures (around 550°C) in the absence of oxygen. This process is commonly used for the disposal of hospital waste.
- **Match**: Pyrolysis (a) → Disposal of hospital waste (iv).

2. **Identify Carbon Monoxide**:
- Carbon monoxide is a colorless, odorless gas that can cause poisoning. It binds to hemoglobin in red blood cells, preventing oxygen from being transported effectively. This leads to symptoms such as asphyxia and dizziness.
- **Match**: Carbon monoxide (b) → Asphyxia and dizziness (iii).

3. **Identify Blue Baby Syndrome**:
- Blue baby syndrome is primarily caused by the conversion of nitrates to nitrites in infants, leading to methaemoglobinemia. This condition reduces the blood's ability to carry oxygen, resulting in a bluish discoloration of the skin.
- **Match**: Blue baby syndrome (c) → Methaemoglobinemia (i).

4. **Identify Black Foot Disease**:
- Black foot disease is a peripheral vascular disease associated with chronic exposure to arsenic. It primarily affects the lower limbs and is characterized by gangrene and other vascular issues.
- **Match**: Black foot disease (d) → Chronic exposure to arsenic (ii).

### Final Matches:
- a → iv (Pyrolysis → Disposal of hospital waste)
- b → iii (Carbon monoxide → Asphyxia and dizziness)
- c → i (Blue baby syndrome → Methaemoglobinemia)
- d → ii (Black foot disease → Chronic exposure to arsenic)

### Summary of Matches:
- (a) → (iv)
- (b) → (iii)
- (c) → (i)
- (d) → (ii)

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