A. Spring water
B. River water
C. Tap water
D. Sea water
Correct Answer:
Option C – Tap water
Explanation
Tap water contains less Ca²+ and Mg²+
A. Spring water
B. River water
C. Tap water
D. Sea water
Correct Answer:
Option C – Tap water
Explanation
Tap water contains less Ca²+ and Mg²+
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