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Lime water contains -

  • A.Calcium chloride
  • B.Sodium carbonate
  • C.Calcium hydroxide
  • D.Sodium hydroxide

Answer: C

Lime water is a solution of calcium hydroxide, Ca(OH)2.

It is the standard test for carbon dioxide: the gas turns it milky by forming insoluble calcium carbonate, and further gas redissolves the precipitate as the soluble bicarbonate.

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