Chemistry MCQs
The main product of bacterial action is_________________?
A. Nox B. NO2 C. N2O3 D. NO
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
Which of the following is not a secondary pollutant_________________?
A. ozone B. carbonic acid C. sulphuric acid D. carbon dioxide
Major cause of SO2 on global scale is__________________?
A. volcanoes B. electric sparks C. combustion D. all
Which of the following is not primary pollutant__________________?
A. SO3 B. CO C. NO D. H2SO4
Which of the following gases is the main cause of acid rain ?
A. CO B. NO2 C. both a & b D. none of the above
Which of the following factors help to measure quallity of water ?
A. DO B. BOD C. COD D. all of the above