The step in water purification in which alum is added to the water to form tiny particles that attract the dirt in water is called a. Coagulation
b. Sedimentation c. Disinfection
d. Filtration
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Answer:
Coagulation
Explanation:
Coagulation: removes dirt, metals and other particles suspended in water. Chemicals like Alum are added to the water that form sticky particles called “floc” which attract the dirt particles.
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Filtration pls mark as brainlist
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