A piece of sea shell, when dropped into a dilute solution of hydrochloric acid, produces…

Chemistry JAMB 1984

A piece of sea shell, when dropped into a dilute solution of hydrochloric acid, produces a colourless, odourless gas which turns clear limewater milky. The sea shell contains

  • sodium chloride
  • ammonium nitrate
  • calcium carbonate checkmark
  • calcium chloride
  • magnesium chloride

The correct answer is: C

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