STATEMENT-1: `KMnO_(4)` is not used as a primary standard substance.
STATEMENT-2: It is deliquescent in nature.

Options

A. If both statement-1 and statement-2 are true and reason is correct explanation of statement.
B. If both statement-1 and statement-2 are true and reason is not correct explanation of statement.
C. If statement-1 is correct and statement-2 is incorrect
D. If both statement-1 and statement-2 are incorrect

Answer

To solve the given question, we need to analyze both statements regarding potassium permanganate (KMnO₄) and determine their validity.

### Step 1: Analyze Statement 1
**Statement 1:** KMnO₄ is not used as a primary standard substance.

- **Explanation:** A primary standard substance is a reagent that is pure, stable, and has a known concentration. KMnO₄ is not considered a primary standard because:
- It often contains impurities, such as MnO₂, which can affect its reactivity and concentration.
- It reacts readily with organic materials and reducing agents, which can lead to inaccuracies in titration.
- KMnO₄ can decompose in the presence of light, further complicating its use as a standard.

**Conclusion for Statement 1:** This statement is **true**.

### Step 2: Analyze Statement 2
**Statement 2:** KMnO₄ is deliquescent in nature.

- **Explanation:** Deliquescent substances are those that absorb moisture from the air and dissolve in the absorbed water. Common examples include substances like calcium chloride and sodium nitrate. However, KMnO₄ does not absorb water from the atmosphere and does not dissolve in moisture; therefore, it is not deliquescent.

**Conclusion for Statement 2:** This statement is **false**.

### Final Conclusion
- **Statement 1 is true.**
- **Statement 2 is false.**

Thus, the correct answer is that Statement 1 is correct, and Statement 2 is incorrect.