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Ferric hydroxide sol is positively charg...

Ferric hydroxide sol is positively charged colloid. The coagulating power of `NO_3^-, SO_4^(2-) and PO_4^(3-)` ions would be in the order

A

`NO_(3)^(-)gtSO_(4)^(2-)gtPO_(4)^(3-)`

B

`SO_(4)^(2-)gtNO_(3)^(-)gtPO_(4)^(3-)`

C

`PO_(4)^(3-)gtSO_(4)^(2-)gtNO_(3)^(-)`

D

`NO_(3)^(-)=SO_(4)^(2-)=PO_(4)^(3-)`

Text Solution

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The correct Answer is:
C
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