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Railways PYQCBT 2 2017

RRB NTPC · Question 17

Which of the following is insoluble in water?

  1. Calcium Carbonate

  2. Sodium Chloride

  3. Lithium Bromide

  4. Magnesium Iodide

Show answer & explanation

Answer: (A) Calcium Carbonate

Explanation

Calcium carbonate (limestone, chalk) is practically insoluble in water. Sodium chloride, lithium bromide and magnesium iodide dissolve readily.