GENERAL KNOWLEDGE

Detailed explanation-1: -In its pure state and under usual environmental conditions, ammonia exists as a colourless, pungent-smelling gas. It is alkaline, caustic and an irritant. Under high pressure, ammonia can be stored as a liquid. It is highly soluble in water. It reacts with acids to form ammonium salts.

Detailed explanation-2: -Ammonia is a nutritious, inorganic nitrogen compound that is found naturally in the air, soil, water and living tissues (think pee). At room temperature, it is a gas. Its chemical formula is NH3 in the gaseous phase and when dissolved in water, much of it ionizes to NH4+ (now called ammonium ion).