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Question 22

Hardness of water is usually due to the presence of

  • A.calcium hydroxide or magnesium hydroxide
  • B.calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI)
  • C.sodium hydroxide or magnesium hydroxide
  • D.calcium chloride or sodium chloride salts
Objective

Question details

Exam body
FUNAAB
Subject
Chemistry
Year
2020/2021
Question no.
#22
Type
Objective
Previous · Q21Two 50cm 3 cylinders I and II contain hydrogen and oxygen respectively at the… Next · Q23 The product formed at the cathode during the electrolysis of sodium chloride…

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