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Question: Answered & Verified by Expert
Plaster of paris is
Chemistrys Block ElementsJIPMERJIPMER 2008
Options:
  • A \(\mathrm{CaSO}_4 \cdot \frac{1}{2} \mathrm{H}_2 \mathrm{O}\)
  • B \(\mathrm{CaSO}_4 \cdot 2 \mathrm{H}_2 \mathrm{O}\)
  • C \(\mathrm{CaSO}_4 \cdot \mathrm{H}_2 \mathrm{O}\)
  • D \(\mathrm{CaSO}_4 \cdot 4 \mathrm{H}_2 \mathrm{O}\)
Solution:
1734 Upvotes Verified Answer
The correct answer is: \(\mathrm{CaSO}_4 \cdot \frac{1}{2} \mathrm{H}_2 \mathrm{O}\)
Calcium sulphate hemihydrate \(\left(\mathrm{CaSO}_4 \cdot \frac{1}{2} \mathrm{H}_2 \mathrm{O}\right)\) is called plaster of paris.

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