1.

Which of the following are negatively charged colloid

Answer»

Gold
Sulphur
`As_(2)S_(3)`
Basic dyes

Solution :(abc) (a) Gold,(b) sulphur, (C) `As_(2)S_(3)` are -vey charged COLLOIDS.
(d) Basic dyes FORM water SOLUBLE cations, i.e., +vely charged colloids.


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