AP and TS EAMCET Engineering 2020 Model Paper 1

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Question : 129 of 160

Marks: +1, -0

Calgon used as a water softner,is

Na2[Na4(PO3)6]
Na4[Na2(PO3)6]
Na4[Na4(PO4)5]
Na4[Na2(PO4)6]

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