Options:
A.
B.
C.
D.
Sign in to view the correct answer and detailed explanation.
Study with fewer interruptions on Android
Use Ulearngo on a verified device for smoother past-question study.
Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing Joint Admissions and Matriculation Board (JAMB). Always confirm official exam, admission, registration, syllabus, timetable, and result information from JAMB official website.
Earlier discussion
2 older comments kept for context.
Emudiaga Oghenegueke
And the purpose of alum is to remove colour and turbidity from water supply, which is small particles of mud
Emudiaga Oghenegueke
Chemical lyk potash alum, KA(SO4)2 or sodium aluminate(III), NaALO2 are added to cause the coagulation or flocculation of mud