Gypsum is obtained when :

Asked in Rakshak 2023 · Topic: Acid, Base and Salt (Common Salts: Baking Soda, Washing Soda, Plaster of Paris and Gypsum)

1. Plaster of Paris is mixed with acid.
2. Plaster of Paris is mixed with base.
3. Plaster of Paris is mixed with water.
4. Plaster of Paris is mixed with salt.

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