Resistivity is reciprocal of molar conductivity of electrolyte.

Explanation

To solve the question regarding the relationship between resistivity and molar conductivity of an electrolyte, we can follow these steps:

### Step 1: Understand the Definitions
- **Resistivity (ρ)**: This is a property of a material that quantifies how strongly it resists the flow of electric current. It is measured in ohm-meters (Ω·m).
- **Molar Conductivity (Λ)**: This is defined as the conductivity of an electrolyte solution divided by the molar concentration of the electrolyte. It is measured in S·m²/mol.

### Step 2: Relationship Between Resistance, Resistivity, and Conductivity
- According to Ohm's Law, the resistance (R) of a conductor is given by the formula:
\[ R = \frac{V}{I} \]
where V is the voltage and I is the current.

- The resistance can also be expressed in terms of resistivity (ρ):
\[ R = \frac{\rho L}{A} \]
where L is the length of the conductor and A is the cross-sectional area.

### Step 3: Conductivity and Its Relation to Resistivity
- Conductivity (κ) is the reciprocal of resistivity:
\[ κ = \frac{1}{ρ} \]

### Step 4: Molar Conductivity and Its Relation to Conductivity
- Molar conductivity (Λ) is related to conductivity (κ) by the equation:
\[ Λ = \frac{κ}{C} \]
where C is the molar concentration of the electrolyte.

### Step 5: Establishing the Relationship
- The question states that resistivity is the reciprocal of molar conductivity. However, this is not correct. The correct relationships are:
\[ ρ = \frac{1}{κ} \quad \text{and} \quad κ = \frac{Λ \cdot C}{1} \]

- Therefore, resistivity is not the reciprocal of molar conductivity. Instead, resistivity is related to conductivity, and molar conductivity is a separate concept that relates to how well a solution conducts electricity based on its concentration.

### Conclusion
- The statement that "resistivity is reciprocal of molar conductivity of electrolyte" is false. Resistivity is the reciprocal of conductivity, not molar conductivity.