Which of the statements is/are true?
1. The process of oxidation leads to gain of electrons.
2. The process of oxidation leads to loss of electrons.
3. The process of reduction leads to gain of electrons.
4. The process of reduction leads to loss of electrons.
Select the correct answer from the codes given below.

Options

A. 1 and 4
B. 2 and 3
C. Only 1
D. Only 4

Explanation

To determine which statements are true regarding oxidation and reduction, let's analyze each statement step by step.

### Step 1: Understand the definitions
- **Oxidation**: This is defined as the process where a substance loses electrons. It can also be described as an increase in oxidation state.
- **Reduction**: This is defined as the process where a substance gains electrons. It can also be described as a decrease in oxidation state.

### Step 2: Evaluate each statement
1. **Statement 1**: "The process of oxidation leads to gain of electrons."
- This statement is **false** because oxidation is characterized by the loss of electrons.

2. **Statement 2**: "The process of oxidation leads to loss of electrons."
- This statement is **true** because it correctly describes the process of oxidation.

3. **Statement 3**: "The process of reduction leads to gain of electrons."
- This statement is **true** because reduction is defined as the gain of electrons.

4. **Statement 4**: "The process of reduction leads to loss of electrons."
- This statement is **false** because reduction involves gaining electrons, not losing them.

### Step 3: Conclusion
From the analysis:
- The true statements are:
- Statement 2: "The process of oxidation leads to loss of electrons."
- Statement 3: "The process of reduction leads to gain of electrons."

Thus, the correct answer is that statements 2 and 3 are true.