Statement-I: Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimenttally.
Because Statement-II: Kohlrausch law help to find the moar conductivity of a weak electrolyte at infinite dilution.

Answer

To solve the question, we need to analyze the two statements provided:

### Step 1: Analyze Statement-I
**Statement-I:** Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally.

- This statement is **incorrect**. Molar conductivity at infinite dilution can indeed be determined experimentally.

### Step 2: Analyze Statement-II
**Statement-II:** Kohlrausch law helps to find the molar conductivity of a weak electrolyte at infinite dilution.

- This statement is **correct**. Kohlrausch's Law states that the molar conductivity of an electrolyte at infinite dilution is equal to the sum of the molar conductivities of its individual ions.

### Step 3: Conclusion
- Since Statement-I is false and Statement-II is true, we conclude that the overall assertion made in the question is that Statement-I is incorrect while Statement-II is correct.

### Final Answer:
- **Statement-I is false.**
- **Statement-II is true.**