Hamad Environmental Chemistry 07/09/2021 A. CO B. NO2 C. both a & b D. none of the above 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... The yellow colour in photochemical smog is due to presence of__________________?A. dinitrogen oxide B. nitrogen dioxide C. chlorine gas D. chlorine dioxide... Which of the following is not primary pollutant__________________?A. SO3 B. CO C. NO D. H2SO4...
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