Which of the following air pollutants is more dangerous for ozone layer ?
Which of the following air pollutants is more dangerous for ozone layer ? A. CFC B. CO2 C. CO D. Oxides of nitrogen
Which of the following air pollutants is more dangerous for ozone layer ? A. CFC B. CO2 C. CO D. Oxides of nitrogen
In which of the following layer of atmosphere there is more thickness of ozone layer ? A. troposphereB. stratosphere C. mesosphere D. photosphere
Which of the following is not a condition for the formation of smog ? A. sufficient NO B. sunlight C. less movement of airD. winds
Acid present in acid rain may be__________________? A. H2SO4 B. HNO3C. both A and B D. none
Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________? A. NH2Cl B. NHCI2 C. NCI2D. all of the above
Residence time of methane in the atmosphere is___________________? A. 3 – 7 days B. 2 -3 daysC. 3 – 7 years D. 2 – 3 years
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
Which of the following is a macro nutrient ? A. boron B. iron C. copperD. carbon