Which of the following salts does show its correct nature mentioned against it ?

Options

A. KBr solution - Neutral
B. NaCN solution - Acidic
C. `NH_(4)NO_(3)` solution - Acisdic
D. KF solution - Basic

Explanation

To determine which of the given salts shows its correct nature as mentioned, we need to analyze each salt based on the strength of the acid and base from which it is formed. Let's break down the analysis step by step.

### Step 1: Analyze KBr
- **Composition**: KBr is formed from KOH (potassium hydroxide) and HBr (hydrobromic acid).
- **Nature of Components**: KOH is a strong base, and HBr is a strong acid.
- **Conclusion**: Since both the acid and base are strong, the salt KBr is neutral in nature.

### Step 2: Analyze NaCN
- **Composition**: NaCN is formed from NaOH (sodium hydroxide) and HCN (hydrocyanic acid).
- **Nature of Components**: NaOH is a strong base, and HCN is a weak acid.
- **Conclusion**: The presence of a strong base (NaOH) and a weak acid (HCN) indicates that NaCN is basic in nature.

### Step 3: Analyze NH4NO3
- **Composition**: NH4NO3 is formed from NH4OH (ammonium hydroxide) and HNO3 (nitric acid).
- **Nature of Components**: NH4OH is a weak base, and HNO3 is a strong acid.
- **Conclusion**: Since there is a strong acid (HNO3) and a weak base (NH4OH), NH4NO3 is acidic in nature.

### Step 4: Analyze KF
- **Composition**: KF is formed from KOH (potassium hydroxide) and HF (hydrofluoric acid).
- **Nature of Components**: KOH is a strong base, and HF is a weak acid.
- **Conclusion**: The presence of a strong base (KOH) and a weak acid (HF) indicates that KF is basic in nature.

### Summary of Findings
1. KBr: Neutral (Correct)
2. NaCN: Basic (Incorrectly stated as acidic)
3. NH4NO3: Acidic (Correct)
4. KF: Basic (Correct)

### Final Answer
The salts that show their correct nature mentioned against them are:
- KBr (Neutral)
- NH4NO3 (Acidic)
- KF (Basic)