Mark out the correct statement(s) regarding electrolytic molar conductivity.

Options

A. It increase as temperature increase
B. It experiences resistance due to vibration of ion at the mean position
C. Increase in concentration decrease the electrolytic molar conductivity of both the strong as well as the weak electrolyte
D. Greater the polarity of solvent, greater is the electrolytic molar conduction.

Explanation

To solve the question regarding electrolytic molar conductivity, we will analyze each statement provided in the question and determine whether they are correct or not.

### Step-by-Step Solution:

1. **Understanding Electrolytic Molar Conductivity**:
- Electrolytic molar conductivity (λm) is defined as the conductivity of a solution containing one mole of electrolyte in a given volume. It is expressed as:
\[ \lambda_m = \frac{1000 \cdot k}{C} \]
where \( k \) is the conductivity and \( C \) is the molarity (concentration) of the solution.

2. **Analyzing Statement 1**:
- **Statement**: "Electrolytic molar conductivity increases as the temperature increases."
- **Analysis**: As the temperature increases, the movement of ions becomes more vigorous, leading to higher conductivity. Therefore, this statement is **true**.

3. **Analyzing Statement 2**:
- **Statement**: "It experiences resistance due to vibration of ions at the mean position."
- **Analysis**: The vibration of ions actually enhances their movement, reducing resistance. Thus, this statement is **false**.

4. **Analyzing Statement 3**:
- **Statement**: "Increase in concentration decreases the electrolytic molar conductivity of both strong as well as weak electrolytes."
- **Analysis**: Since molar conductivity is inversely proportional to concentration, increasing concentration will decrease molar conductivity. Therefore, this statement is **true**.

5. **Analyzing Statement 4**:
- **Statement**: "Greater the polarity of solvent, greater is the electrolytic molar conductivity."
- **Analysis**: Higher polarity of the solvent increases the dissociation of ions, which enhances conductivity. Thus, this statement is **true**.

### Conclusion:
Based on the analysis:
- **Correct Statements**: 1, 3, and 4.
- **Incorrect Statement**: 2.

### Final Answer:
The correct statements regarding electrolytic molar conductivity are:
1. It increases as the temperature increases.
3. Increase in concentration decreases the electrolytic molar conductivity of both strong as well as weak electrolytes.
4. Greater the polarity of solvent, greater is the electrolytic molar conductivity.