A) control pH level of the detergent water mixture
B) remove \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] ions from the water that causes the hardness of water
C) provide whiteness to the fabrics
D) form solid detergent as phosphate-less detergents are liquid in nature
Correct Answer: B
Solution :
The phosphate ions, present in detergent powder, remove \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] ions from the hard water to decrease its hardness.
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