A compound A having molecular formula `(C_3 H_9 N)` on treatment with benzenesulfonyl chloride gives an insoluble solid. Identify A

Explanation

To solve the problem of identifying compound A with the molecular formula \(C_3H_9N\) that reacts with benzenesulfonyl chloride to give an insoluble solid, we can follow these steps:

### Step 1: Understand the nature of the compound
The molecular formula \(C_3H_9N\) indicates that compound A is an amine. Amines can be classified into three categories: primary, secondary, and tertiary amines.

### Step 2: Analyze the reaction with benzenesulfonyl chloride
Benzenesulfonyl chloride (also known as Hinsberg reagent) is used to differentiate between primary, secondary, and tertiary amines:
- **Primary amines** react to form sulfonamides that are soluble in NaOH.
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