MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Solubility of a gas in water depends on its ability to interact with water molecules. Water is a polar solvent. NH _3 is highly soluble in water due to its ability to form intermolecular hydrogen bonds with water. HCl is a polar molecule that ionizes completely in water, making it highly soluble. CO _2 is moderately soluble because it reacts with water to form carbonic acid ( H _2 CO _3). N _2 is a non-polar diatomic gas that neither reacts with water nor forms hydrogen bonds. Therefore, it has the weakest interaction with water molecules and is the least soluble among the given gases. Answer: N _2