River contaminated by alkali waste will have a pH of about? by Sunday | Aug 24 | Chemistry WAEC | 0 comments A. 1 B. 3 C. 5 D. 7 E. 9 Correct Answer: Option E – 9 Users Also Read These:The gas given off when NH4Cl is heated with an alkali is?The role of an Alkali under the Hausa-Fulani…A dye is suspected to have contaminated a lollipop.…Transferring bacteria from contaminated to…The longest river in Africa is River?