CHEMISTRY
JAMB 2001 - Question 20
Chemistry 2001 JAMB Past Questions - Question 20: The chemical used for coagulation in water purification is
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
A
Explanation
Aluminum sulfate (alum) and ferric sulfate are commonly used as coagulants in water purification. These chemicals are added to water to destabilize and aggregate suspended particles, making them easier to remove through the process of sedimentation and filtration. Coagulation is an essential step in water treatment, as it helps to clarify the water by removing impurities and particles that may be present. The coagulants work by neutralizing the electrical charges on the particles, allowing them to come together and form larger, settleable flocs.
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