Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are:
Chemistrys Block ElementsJEE MainJEE Main 2021 (27 Aug Shift 1)
Options:
  • A 2, 0 and 0.5
  • B 0.5, 0 and 2
  • C 2, 0 and 1
  • D 5, 0 and 0.5
Solution:
1919 Upvotes Verified Answer
The correct answer is: 2, 0 and 0.5
Gypsum =CaSO4·2H2O
Plaster of paris (POP)=CaSO4·12H2O
Dead burnt of plaster =CaSO4

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.