Select the compound in which HCl is not the product of Hydrolysis:

Options

A. `NCl_(3)`
B. `PCl_(3)`
C. `AsCl_(3)`
D. `BiCl_(3)`

Explanation

To solve the question of selecting the compound in which HCl is not the product of hydrolysis, we will analyze each compound one by one and observe the products formed when they react with water.

### Step-by-Step Solution:

1. **Understanding Hydrolysis**: Hydrolysis is a chemical reaction involving water, where water reacts with a compound to produce new substances. We are specifically looking for a compound that does not produce HCl upon hydrolysis.

2. **Analyzing the First Compound (NCl3)**:
- When NCl3 (Nitrogen trichloride) reacts with water, the reaction can be represented as:
\[ \text{NCl}_3 + \text{H}_2\text{O} \rightarrow \text{NH}_3 + \text{HOCl} \]
- In this reaction, the products are NH3 (ammonia) and HOCl (hypochlorous acid). Notably, HCl is not formed.

3. **Analyzing the Second Compound (PCl3)**:
- When PCl3 (Phosphorus trichloride) reacts with water, the reaction can be represented as:
\[ \text{PCl}_3 + \text{H}_2\text{O} \rightarrow \text{H}_3\text{PO}_3 + \text{HCl} \]
- Here, HCl is produced as one of the products.

4. **Analyzing the Third Compound (AsCl3)**:
- When AsCl3 (Arsenic trichloride) reacts with water, the reaction can be represented as:
\[ \text{AsCl}_3 + \text{H}_2\text{O} \rightarrow \text{H}_3\text{AsO}_3 + \text{HCl} \]
- Similar to PCl3, HCl is also produced in this reaction.

5. **Analyzing the Fourth Compound (BiCl3)**:
- When BiCl3 (Bismuth trichloride) reacts with water, the reaction can be represented as:
\[ \text{BiCl}_3 + \text{H}_2\text{O} \rightarrow \text{BiOCl} + \text{HCl} \]
- Again, HCl is produced in this reaction.

6. **Conclusion**: After analyzing all the compounds, we find that:
- NCl3 is the only compound that does not produce HCl upon hydrolysis. Instead, it produces NH3 and HOCl.

### Final Answer:
The compound in which HCl is not the product of hydrolysis is **NCl3**.