Everyday Science
NULL
Medium
Question
Permanent hardness due to metal sulphates can be removed using __________?
A
Zeolites
✓ Official correct answer
B
Sulphonides
C
Lime
D
Nitrates
Community credibility
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A
Zeolites
No member explanations yet for this option.
B
Sulphonides
No member explanations yet for this option.
C
Lime
No member explanations yet for this option.
D
Nitrates
No member explanations yet for this option.
Explanation
Ion-exchange zeolites soften permanently hard water.
Hence the keyed answer is Zeolites.
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