Hamad Environmental Chemistry 16/03/2021 A. Biosphere B. Ecosystem C. Both a & b D. Hydrosphere Related Mcqs: Which statement is wrong ?A. the amount of ozone layer is greater in the region close to the equator B. ozone acts as filter for UV radiations C. in the equatorial region it acts as pollutant D. CFCs play effective role in removing O3 in the stratosphere... 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... 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...
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