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JAMB Chemistry 1985 Question 27

Question 27

Halogens

Which of the following is used in the manufacture of bleaching powder?

  1. A.Sulphur dioxide
  2. B.Chlorine
  3. C.Hydrogen tetraoxosulphate (VI)
  4. D.Hydrogen sulphide
  5. E.Nitrogen dioxide
Show the answer and explanation

Answer: B (Chlorine)

Explanation

Bleaching powder is made by passing chlorine over slaked lime, Ca(OH)2.