Science — AI-generated practice question

Two uses of washing soda (Na₂CO₃·10H₂O):

1. It is used in the manufacture of glass, soap, and paper industries.
2. It is used as a cleaning agent for domestic purposes (removing grease and stains) and for softening hard water.

The source passages provided do not directly mention washing soda's uses, but this is standard CBSE Chapter 2 (Acids, Bases and Salts) content. Examiners expect any two distinct uses — industrial (glass/soap/paper manufacture) and domestic (cleaning agent/water softener) are the most commonly accepted. Write each use as a separate point for clear mark allocation.