Hamad Environmental Chemistry 13/07/2021 A. Nox B. NO2 C. N2O3 D. NO Related Mcqs: Which of the following is a macro nutrient ?A. boron B. iron C. copper D. carbon... 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... 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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