1.

Among the electrolysis of Na_(2)SO_(4), CaCl_(2), Al_(2)(SO_(4))_(3) and NH_(4)Cl, the most effective coagulating agent for Sb_(2)S_(3) sol is

Answer»

`Na_(2)SO_(4)`
`CaCl_(2)`
`Al_(2)(SO_(4))_(3)`
`NH_(4)Cl`

ANSWER :C


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