Mag-sign In
JAMB - Chemistry (1987 - No. 22)
In the purification of town water supply, alum is used principally to?
kill bacteria
control the pH of water
improve the taste of the water
coagulate small pasrticles of mud
Mga komento (0)
Mag-login Upang Magkomento
Advertisement
Payagan ang javascript na i-load nang maayos ang page na ito
