Assertion: Tetraethyl lead minimizes the knocking effect when mixed with petrol.
Reason: Because tetraethyl lead acts as a `-Ve catalyst.

Options

A. STATEMENT -1 is true, STATEMENT-2 is true and STATEMENT-2 is correct explanation for STATEMENT-13
B. STATEMENT -1 is true, STATEMENT-2 is true and STATEMENT-2 is not correct explanation for STATEMENT-14
C. STATEMENT-1 is true, STATEMENT-2 is false
D. STATEMENT-1 is false, STATEMENT-2 is true

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Tetraethyl lead minimizes the knocking effect when mixed with petrol."
- Knocking in engines is caused by the premature ignition of the air-fuel mixture, which can lead to engine damage. Tetraethyl lead (TEL) is known to be used as an anti-knock agent in petrol.

2. **Understanding the Reason**:
- The reason states that "Because tetraethyl lead acts as a -Ve catalyst."
- A negative catalyst is a substance that slows down a reaction. However, in the context of petrol and knocking, TEL does not act as a negative catalyst in the traditional sense. Instead, it helps to improve the combustion characteristics of the fuel.

3. **Analyzing the Role of Tetraethyl Lead**:
- Tetraethyl lead increases the octane rating of petrol, which means it allows the fuel to burn more smoothly and reduces the chances of knocking.
- It does this by promoting the formation of branched hydrocarbons from unbranched ones, which burn more evenly.

4. **Conclusion**:
- The assertion is correct because tetraethyl lead does minimize the knocking effect when mixed with petrol.
- The reason is misleading because while TEL does improve combustion, it does not act as a negative catalyst. Instead, it functions more as an additive that enhances fuel performance.

### Final Answer:
- **Assertion**: True
- **Reason**: False (not a correct explanation)