Plaster of Paris is :
(a) CaSO₄.2H₂O (b) CaSO₄.H₂O
(c) CaSO₄ . 1/2 H₂O (d) CaSO₄.4H₂O
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Answer:
c is the correct option
Explanation:
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● The chemical formula of Plaster of paris is CaSO₄ . 1/2 H₂O.
● Gypsum rock is changed over into gypsum mortar by driving off a portion of the artificially consolidated water.
● Warming gypsum at 120°C for one hour brings about a hemi-hydrate (CaSO4. 1⁄2H2O) – with 75% of the water evacuated.
● A significant part of the business mortar delivered modernly today is Plaster of Paris.
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