Question

Plaster of paris should be started in a moisture proof container why explain

Answer 1

yes, plaster of Paris should be stored in moisture proof container.

if plaster of Paris is stored in moisture container it become solid, become useless

Answer 2

Plaster of Paris changes into a hard solid mass on mixing with water . This solid mass is of gypsum. Hence, plaster of Paris should be stored in a moisture-proof container.