MDCAT
Chemistry
2021
Chemistry · S and p Block Elements
Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.
Question
The general name of ore CaSO4.2H2O is:
Options
- AGypsum
- BDolomite
- CCalcite
- DPlaster of Paris
Explanation
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4.2H2O. Thus, option A is correct.
Gypsum is a soft sulfate mineral of calcium sulfate dihydrate, with the chemical formula CaSO4.2H2O. Thus, option A is correct.
This option is not correct.Dolomite — CaMg(CO₃)₂
This option is not correct.Calcite — CaCO₃
This option is not correct.Plaster of Paris — CaSO₄·½H₂O (partially dehydrated form of gypsum)
Tagged under Chemistry · S and p Block Elements · 2021