JKSSB Mock Tests

The 'Permanent Hardness' of water is due to the presence of:

A. bicarbonates of Ca and Mg
B. chlorides and sulphates of Ca and Mg
C. carbonates of Na and K
D. nitrates of silver
Answer: Option B
Solution (By JKSSB Mock Tests Team)
Unlike temporary hardness, permanent hardness cannot be removed by simple boiling.
This Question Belongs to: General science Chemistry set 1
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