Hamad Environmental Chemistry 22/06/2021 A. boron B. iron C. copper D. carbon Related Mcqs: Newspaper can be recycled again and again how many times ?A. 2 B. 3 C. 4 D. 5... The main pollutant of leather tanneries in the waste water is____________________?A. chromium III B. chromium IV C. chromium V D. chromium VI... Which one of the following makes the bulk of hydrospheres content ?A. oceans B. glaciers & icecaps C. fresh water lakes and ponds D. All have equal distribution... A single chlorine free radical can destroy how many ozone molecules ?A. 10 B. 100 C. 10000 D. 100000... Chlorination of water may be harmful if the water contains_________________?A. Ammonia B. Dissolved oxygen C. Carbon dixide D. All...
Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ
Recent Comments