Ingia
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
Maoni (0)
Ingia Ili Kutoa Maoni
Tangazo
Ruhusu javascript kupakia vizuri ukurasa huu
