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Plaster of Paris is Prepared by Heating One of the Following to a Temperature of 100°C. this Is: (A) Caso3.2h2o (B) Cacl2.2h2o (C) Caco3.2h2o (D) Caso4.2h2o - Science

Plaster of Paris is prepared by heating one of the following to a temperature of 100°C. This is:
(a) CaSO3.2H2O
(b) CaCl2.2H2O
(c) CaCO3.2H2O
(d) CaSO4.2H2O

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Solution

CaSO4.2H2O
When CaSO4.2H2O (gypsum) is heated to a temperature of 100⁰C (373K), it loses three-fourths of its water of crystallisation and forms plaster of Paris (CaSO4.1/2H2O).

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Lakhmir Singh Class 10 Chemistry (Science)
Chapter 2 Acids, Bases and Salts
Q 65 | Page 99
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