Hamad Environmental Chemistry 09/10/2020 A. H2SO4 B. HNO3 C. both A and B D. none Related Mcqs: Three elements needed for the healthy growth of plants are_________________?A. N P K B. N K C C. N S P D. N Ca P... Pollutants have adverse effect over_________________?A. Biosphere B. Ecosystem C. Both a & b D. Hydrosphere... Which of the following is not a heavy industry ?A. iron B. fertilizer C. paper D. none... Requirement of macronutrient per acre of the land is_________________?A. 5 to 200 kg B. 20-200 kg C. 200-400 kg D. 30-400 kg... Ozone hole is substantial depletion of ozone in every year during__________________?A. Aug – Nov B. Sep – Nov C. Nov – Dec D. Dec – Jan...
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