Alkaline pH of water indicates that the water_________.

is hard

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is safe for household chores

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is suitable for washing clothes

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contains only mineral

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Solution

The correct option is A is hard
Determining the pH of water is easiest method as universal pH indicator papers are available. Dipping a paper in water and comparing the change in colour with the standard chart gives information about pH of the water. Acidic pH indicates pollution while alkaline pH indicates hardness.

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