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When alum is added to the waste water containing calcium ion - Practice - ObjectiveMcq

HomePracticePower PlantGeneralWhen alum is added to the waste wat...

General Power PlantMedium

When alum is added to the waste water containing calcium ions which compound is formed as a precipitate?

Correct Answer: D — Al(OH)3

When alum is added to a waste water containing calcium salts Al (OH)3 is precipitated. This is a gelatinous floc. This reaction sweeps out suspended particles.

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