Neopentyl iodide is treated with aq. `AgNO_3` solution, a yellow precipitate is formed along with other compound which is

Options

A. `(CH_3)_3C CH_2ONO_2`
B. `(CH_3)_2oversetoverset(OH)(|)C-CH_2CH_3`
C. `(CH_3)_3C CH_2OH`
D. `(CH_3)_2oversetoverset(ONO_2)(|)C-CH_2CH_3`

Explanation

To solve the problem of what compound is formed when neopentyl iodide is treated with aqueous AgNO3 solution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Neopentyl Iodide Structure**:
Neopentyl iodide has the structure:
\[ \text{C(CH}_3\text{)}_4\text{CH}_2\text{I} \]
This can also be represented as:
\[ \text{(CH}_3\text{)}_4\text{C-CH}_2\text{I} \]

2. **Reaction with Aqueous AgNO3**:
When neopentyl iodide reacts with aqueous AgNO3, the iodide ion (I-) is replaced by a hydroxyl group (OH) due to the nucleophilic substitution reaction. The silver ion (Ag+) reacts with iodide to form a yellow precipitate of silver iodide (AgI).

3. **Formation of the Carbocation**:
The reaction mechanism involves the formation of a carbocation after the iodide leaves:
\[ \text{C(CH}_3\text{)}_4\text{C}^+ \text{ (carbocation)} \]

4. **Methyl Shift**:
A methyl shift occurs to stabilize the carbocation, leading to the formation of a more stable tertiary carbocation:
\[ \text{C(CH}_3\text{)}_3\text{C}^+\text{ (new carbocation)} \]

5. **Nucleophilic Attack by Water**:
Water (H2O) acts as a nucleophile and attacks the carbocation:
\[ \text{C(CH}_3\text{)}_3\text{C}^+\text{ + H}_2\text{O} \rightarrow \text{C(CH}_3\text{)}_3\text{C(OH)}\text{H}_2 \]

6. **Deprotonation**:
The final step involves the removal of a proton (H+) from the hydroxyl group, leading to the formation of the final alcohol product:
\[ \text{C(CH}_3\text{)}_3\text{C(OH)H}_2 \rightarrow \text{C(CH}_3\text{)}_3\text{C(OH)CH}_2\text{ (neopentyl alcohol)} \]

7. **Final Products**:
The final products of the reaction are:
- Yellow precipitate of silver iodide (AgI)
- Neopentyl alcohol (C(CH3)3CH2OH)

### Conclusion:
The other compound formed along with the yellow precipitate (AgI) when neopentyl iodide is treated with aqueous AgNO3 is neopentyl alcohol.