Statement - I : Total number of positive ions in nature is contant.
Statement-II : Charge is conserved.

Options

A. If both Statement-I and Statement-II are true, and Statement-II is the correct explanation of Statement -I.
B. If both Statement-I and Statement-II are true but Statement-II is not the correct explanation of Statement -I.
C. If Statement -I is true but Statement-II is false
D. If Statement-I is false but Statement -II is true

Answer

To analyze the statements provided, we will evaluate each statement step by step.

### Step 1: Evaluate Statement I
**Statement I**: The total number of positive ions in nature is constant.

- **Analysis**:
- Consider a water molecule (H₂O). In its neutral state, it does not contribute any positive or negative ions. However, when water dissociates, it breaks into H⁺ (positive ion) and OH⁻ (negative ion).
- When water is in its molecular form, the number of positive ions is zero. Upon dissociation, the number of positive ions increases (from 0 to 1).
- If the water molecules recombine, the number of positive ions returns to zero. This indicates that the number of positive ions can change based on physical processes (dissociation and recombination).

**Conclusion for Statement I**: The statement is **false** because the number of positive ions is not constant and can vary with different physical phenomena.

### Step 2: Evaluate Statement II
**Statement II**: Charge is conserved.

- **Analysis**:
- Charge conservation means that the total charge in an isolated system remains constant over time.
- When a neutral atom, such as sodium (Na), donates an electron to chlorine (Cl) to form Na⁺ and Cl⁻, the total charge before and after the reaction remains the same.
- Initially, Na has 11 electrons and Cl has 17 electrons, totaling 28 electrons. After the transfer, Na becomes positively charged (Na⁺) and Cl becomes negatively charged (Cl⁻), but the total number of electrons remains 28 (10 from Na and 18 from Cl).
- This demonstrates that while charges may redistribute, the overall charge remains conserved.

**Conclusion for Statement II**: The statement is **true** because charge is conserved in nature.

### Final Conclusion
- **Statement I** is **false**.
- **Statement II** is **true**.

Thus, the correct answer is that Statement I is false and Statement II is true.