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Which of the following colloidal solution is commonly used as germ killer?

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Which of the following colloidal solution is commonly used as germ killer?

(a) Colloidal sulphur

(b) Colloidal gold

(c) Colloidal silver

(d) Colloidal antimony

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(a) Colloidal sulphur

Sulphur in colloidal state has more larger викрасе area due to which adsorption is more because of which colloidal sulphur is used as germ killer.

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