Which of the following process form Nascent H:

Options

A. `Al+NaOH`
B. `Zn+H_(2)SO_(4)`
C. `Na+C_(2)H_(5)OH`
D. All of these

Answer

To determine which processes form nascent hydrogen (H), let's analyze each option step by step.

### Step 1: Analyze the first option - Aluminium with NaOH
- When aluminium reacts with sodium hydroxide (NaOH), the reaction can be represented as:
\[ 2 \text{Al} + 2 \text{NaOH} + 2 \text{H}_2\text{O} \rightarrow 2 \text{NaAlO}_2 + 3 \text{H}_2 \]
- In this reaction, nascent hydrogen is produced. Therefore, this option forms nascent hydrogen.

### Step 2: Analyze the second option - Zinc with H2SO4
- When zinc reacts with sulfuric acid (H2SO4), the reaction can be represented as:
\[ \text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2 \]
- Here, nascent hydrogen is also produced during the reaction. Thus, this option also forms nascent hydrogen.

### Step 3: Analyze the third option - Sodium with C2H5OH
- When sodium reacts with ethanol (C2H5OH), the reaction can be represented as:
\[ 2 \text{Na} + 2 \text{C}_2\text{H}_5\text{OH} \rightarrow 2 \text{C}_2\text{H}_5\text{O}^- \text{Na}^+ + \text{H}_2 \]
- In this case, nascent hydrogen is produced as well. Therefore, this option also forms nascent hydrogen.

### Conclusion
After analyzing all the options, we find that all the processes listed (A, B, and C) produce nascent hydrogen. Thus, the correct answer is:
- **Option D: All of the above processes form nascent hydrogen.**