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An aresnious sulphides sol carries a neg...

An aresnious sulphides sol carries a negative charge. The maximum precipitating power of this sol is possessed by : `K_2 SO_4` `CaCl_2` `Na_3 PO_4` `AlCl_3`

A

K_2 SO_4

B

CaCl_2

C

Na_3 PO_4

D

AlCl_3

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The correct Answer is:
D
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