It varies from about -50 mV to + 50 mV. Retention’s often at a max. – McqOptions

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1.	It varies from about -50 mV to + 50 mV. Retention’s often at a max. when the charge density is near 0. This is probably where the solubility is the least. What property’s mentioned here?
A.	Deflocculation
B.	Flocculation
C.	Zeta potential
D.	Alum
Answer» D. Alum

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