Question

Which one of the following is NOT a property of hard water?
1 point
A. It is good for the brewing industry
B. It lathers easily with soap solution
C. It has a nice taste
D. It causes lime scale in kettles

Answer 1

The property that is not of hard water is B. It lathers easily with soap solution.

• Hard water is known to comprise of ions such as bicarbonates, chlorides, calcium and magnesium ions.
• When such ions combine with soap molecules, the calcium and magnesium ions precipitate out.
• As a result, the soap is washed without forming of leather.
• Hence, the statement B. it lathers easily with soap solution is not of Hard water.

• All the other options are properties of hard water. Hard water is good  for brewing industry as the calcium and magnesium ions in hard water are know to produce a more hoppier flavour.

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Answer 2

Explanation:

B. It lathers easily with soap solution