Often a ground glass stopper gets stuck in the neck of a glass bottle containing `NaOH` solution . This is due to ,

Options

A. The presence of dirt particles in between
B. The formation of solid silicate in between by the reaction of ` SiO_2` of glass with `NaOH` .
C. The formation of `Na_2 CO_3` in-between by the reaction of `CO_2` of air and ` NaOH`.
D. Glass contains a born compound which forms a preciptate with the ` NaOH` solution .

Explanation

To solve the question about why a ground glass stopper gets stuck in the neck of a glass bottle containing sodium hydroxide (NaOH) solution, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Materials Involved**:
- The glass stopper and the glass bottle are made primarily of silica (SiO₂).
- Sodium hydroxide (NaOH) is a strong base that can react with certain materials.

2. **Identifying the Reaction**:
- When sodium hydroxide is in contact with silica (from the glass), a chemical reaction occurs.
- The reaction can be represented as:
\[ \text{SiO}_2 + 2 \text{NaOH} \rightarrow \text{Na}_2\text{SiO}_3 + \text{H}_2\text{O} \]
- This reaction produces sodium silicate (Na₂SiO₃), which is a solid compound.

3. **Formation of Solid Product**:
- The sodium silicate formed during the reaction can precipitate and accumulate in the neck of the bottle.
- This accumulation creates a physical barrier, causing the glass stopper to become stuck.

4. **Conclusion**:
- The sticking of the glass stopper is primarily due to the chemical reaction between sodium hydroxide and the silica in the glass, leading to the formation of sodium silicate, which solidifies and traps the stopper.

### Final Answer:
The ground glass stopper gets stuck in the neck of the glass bottle containing sodium hydroxide solution due to the reaction between silica in the glass and sodium hydroxide, forming sodium silicate, which solidifies and causes the stopper to become lodged.

---