Question

Give reasons for the following:
Ammonia solution is used to remove oil and grease stains from clothes

Answer 1

• The ammonia $\left({\mathrm{NH}}_3\right)$ generated when ammonium chloride $\left({\mathrm{NH}}_4\mathrm{Cl}\right)$ is heated and rubbed with metal eliminates grease, oil, and other contaminants.
• Grease and filth are removed using ammonia because it emulsifies or dissolves dirt and grease.
• Hence, ammonia solution is used to remove oil and grease stains from clothes.