Chemistry

Chemistry, 21.08.2021 18:10, makaylahills1134

3. Alum is used in water treatment as
A. a germicide.
В. a decolourising agent.
C. an antioxidant.
D. a coagulating agent.

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3. Alum is used in water treatment as
A. a germicide.
В. a decolourising agent.
C....

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