Question

what is plaster of paris ​

Answer 1

a soft mixture of sand and cement and sometimes lime with water, for spreading on walls, ceilings, or other structures, to form a smooth hard surface when dried.

Answer 2

Explanation:

Plaster of paris, quick-setting gypsum plaster consisting of a fine white powder (calcium sulfate hemihydrate), which hardens when moistened and allowed to dry. ... Known since ancient times, plaster of paris is so called because of its preparation from the abundant gypsum found near Paris.