📊 Chemistry
Q. Which one of the following statements is not right?

  • (A) Barium and strontium are found free in nature
  • (B) All alkaline earth metals form hydrated salts
  • (C) The presence of NaCl increases the rate of setting of Plaster of Paris
  • (D) Gypsum is added to the cement to slow down its rate of setting
✅ Correct Answer: (A) Barium and strontium are found free in nature

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