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JEE Main20208 Jan 2020Morning ShiftChemistrys Block ElementsActual

When gypsum is heated to 393 K , it forms:

Options

  1. AAnhydrous C a S O 4
  2. BC a S O 4 · 5 H 2 O
  3. CC a S O 4 · 0.5 H 2 O
  4. DDead burnt plaster

Correct answer

C. C a S O 4 · 0.5 H 2 O

Step-by-step solution

C a S O 4 .2 H 2 O → 393   K C a S O 4 . 1 2 H 2 O

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