\( \mathrm{As}_{2} \mathrm{~S}_{3} \) sol is (A) positive colloid (B) negative colloid (C) neutr...

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\( \mathrm{As}_{2} \mathrm{~S}_{3} \) sol is
(A) positive colloid
(B) negative colloid
(C) neutral colloid
(D) none of the above
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