Answers

  • Brainly User
2015-10-20T14:31:53+05:30
Because the presence of moisture can cause slow setting of plaster of Paris by bringing abt its duration.this will make the plaster of Paris useless after some time.. hope it helps....plz mark as brainliest**
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2015-10-20T14:34:30+05:30
Because gypsum removed water POP is formed.
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