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which one of the following statements is not correct

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Q.

Which one of the following statements is NOT correct ?

[A] All alkaline earth metals form hydrated salts

[B] Barium and strontium are found free in nature

[C] Gypsum is added to the cement to slow down its rate of setting

[D] The presence of NaCl increases the rate of setting of Plaster of Paris

Answer & Explanation
Option: [B]

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