TEL minimizes the Knocking effect when mixed with petrol. It acts as :-

Options

A. Positive catalyst
B. Negative catalyst
C. Autocatalyst
D. Induced catalyst

Explanation

To solve the question regarding TEL (Tetraethyl Lead) and its role in minimizing the knocking effect when mixed with petrol, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Understanding TEL**:
- TEL stands for Tetraethyl Lead, which is a chemical compound historically used as an anti-knocking agent in gasoline.

2. **Defining Knocking**:
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