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Class 11Chemistrys-Block ElementsAlkaline earth metals
Easy

How does Plaster of Paris become hard?

  • A
    By the removal of $CO_2$
  • B
    By conversion into $CaCO_3$
  • C
    By combining with water
  • D
    By the removal of water
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Class 11 Questions

Class 11

Chemistry Questions

Chapter

s-Block Elements

Subtopic

Alkaline earth metals

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