An example of a strong electrolyte is

Options

A. Glucose
B. Urea
C. Ammonium hydroxide
D. Sodium formate

Answer

To determine an example of a strong electrolyte from the given options, we need to understand what a strong electrolyte is.

### Step-by-Step Solution:

1. **Define Strong Electrolytes**:
Strong electrolytes are substances that completely dissociate into their ions when dissolved in water. This means that they break apart fully into positive and negative ions, allowing them to conduct electricity very well.

2. **Identify the Options**:
The options provided are:
- A) Glucose
- B) Urea
- C) Ammonium Hydroxide
- D) Sodium Formate

3. **Analyze Each Option**:
- **Glucose**: This is a simple sugar that does not dissociate into ions in solution. Therefore, it is a non-electrolyte.
- **Urea**: Similar to glucose, urea does not dissociate into ions when dissolved in water. It is also a non-electrolyte.
- **Ammonium Hydroxide (NH4OH)**: This is a weak base that partially dissociates in water. Hence, it is classified as a weak electrolyte.
- **Sodium Formate (NaCOO)**: This is a salt that completely dissociates into sodium ions (Na⁺) and formate ions (COO⁻) when dissolved in water. Therefore, it is a strong electrolyte.

4. **Conclusion**:
Based on the analysis, the only strong electrolyte among the options is **Sodium Formate (D)**.

### Final Answer:
The correct answer is **D) Sodium Formate**.

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