One litre hard water contains 12.00 mg \[M{{g}^{2+}}\]milli equivalent of washing soda required to remove its hardness is [CBSE PMT 2001]

One litre hard water contains 12.00 mg \[M{{g}^{2+}}\]milli equivalent

1.	One litre hard water contains 12.00 mg \[M{{g}^{2+}}\]milli equivalent of washing soda required to remove its hardness is [CBSE PMT 2001]
A.	1
B.	12.15
C.	\[1\times {{10}^{-3}}\]
D.	\[12.15\times {{10}^{-3}}\]
Answer» B. 12.15

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One litre hard water contains 12.00 mg \[M{{g}^{2+}}\]milli equivalent of washing soda required to remove its hardness is [CBSE PMT 2001]

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