`{:("LIST - 1","LIST - 2"),("A) Positive catalyst","1) "H_(2)S" to iron in Habers process"),("B) Negative catalyst","2) 'CO' to preparation of "SO_(3)),("C) Catalytic poison","3) Glycerol to prevent decomposition of "H_(2)O_(2)),("D) Promoter","4) "MnO_(2)" in the decomposition of "KClO_(3)),(,"5) Mo to Fe in Habers process"):}`
The correct match is

Options

A. `{:(A,B,C,D),(4,3,5,2):}`
B. `{:(A,B,C,D),(3,4,2,1):}`
C. `{:(A,B,C,D),(4,3,1,5):}`
D. `{:(A,B,C,D),(1,5,3,2):}`

Answer

To solve the question, we need to match the items from List 1 (types of catalysts) with the appropriate items from List 2 (examples of their roles in chemical reactions). Let's analyze each item step by step.

### Step-by-Step Solution:

1. **Identify Positive Catalyst**:
- A positive catalyst increases the rate of a reaction.
- From List 2, "MnO2 in the decomposition of KClO3" is a known example of a positive catalyst.
- **Match**: A) Positive catalyst → 4) MnO2 in the decomposition of KClO3.

2. **Identify Negative Catalyst**:
- A negative catalyst decreases the rate of a reaction.
- "Glycerol to prevent the decomposition of H2O2" acts as a negative catalyst by slowing down the decomposition of hydrogen peroxide.
- **Match**: B) Negative catalyst → 3) Glycerol to prevent decomposition of H2O2.

3. **Identify Catalytic Poison**:
- A catalytic poison inhibits the action of a catalyst.
- "H2S to iron in Haber’s process" is an example where H2S acts as a poison to the iron catalyst used in the synthesis of ammonia.
- **Match**: C) Catalytic poison → 1) H2S to iron in Haber’s process.

4. **Identify Promoter**:
- A promoter enhances the activity of a catalyst.
- "Mo to Fe in Haber’s process" is an example where molybdenum acts as a promoter to enhance the activity of iron in ammonia synthesis.
- **Match**: D) Promoter → 5) Mo to Fe in Haber’s process.

### Final Matches:
- A) Positive catalyst → 4) MnO2 in the decomposition of KClO3
- B) Negative catalyst → 3) Glycerol to prevent decomposition of H2O2
- C) Catalytic poison → 1) H2S to iron in Haber’s process
- D) Promoter → 5) Mo to Fe in Haber’s process

### Summary of Correct Matches:
- A → 4
- B → 3
- C → 1
- D → 5