Correct statement for E1 Reaction is :

Options

A. It is a two step process.
B. Rearrangement is possible
C. Good leaving group favours
D. All of these

Answer

To solve the question regarding the correct statements for an E1 reaction, we will analyze each of the provided options step by step.

### Step 1: Understanding E1 Reaction
E1 stands for unimolecular elimination reaction. It is a type of elimination reaction that occurs in two distinct steps.

### Step 2: Analyzing the Steps of E1 Reaction
1. **First Step - Carbocation Formation**:
- In the first step, the substrate (usually an alkyl halide) undergoes ionization to form a carbocation intermediate. This step is the rate-determining step and is unimolecular, meaning it depends only on the concentration of the substrate.

2. **Second Step - Elimination**:
- In the second step, a base removes a proton (H+) from a neighboring carbon, leading to the formation of a double bond and the elimination of the leaving group (e.g., halide ion).

### Step 3: Evaluating the Options
- **Option A: It is a two-step process**:
- This statement is correct as we have established that E1 reactions occur in two steps.

- **Option B: Rearrangement is possible**:
- This is also true. The carbocation formed in the first step can rearrange to a more stable carbocation if possible (e.g., from a secondary to a tertiary carbocation).

- **Option C: Good leaving group favors the reaction**:
- This statement is correct as well. E1 reactions are favored by substrates with good leaving groups (like halogens) because they facilitate the formation of the carbocation.

- **Option D: All of these**:
- Since all the previous statements (A, B, and C) are correct, this option is also correct.

### Conclusion
The correct answer is **Option D: All of these**.

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