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
Environmental Chemistry
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In which of the following layer of atmosphere there is more thickness of ozone layer ?
In which of the following layer of atmosphere there is more thickness of ozone layer ?A. troposphere
B. stratosphere
C. mesosphere
D. photosphere -
Which of the following is not a condition for the formation of smog ?
Which of the following is not a condition for the formation of smog ?A. sufficient NO
B. sunlight
C. less movement of air
D. winds -
Acid present in acid rain may be__________________?
Acid present in acid rain may be__________________?A. H2SO4
B. HNO3
C. both A and B
D. none -
Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?
Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?A. NH2Cl
B. NHCI2
C. NCI2
D. all of the above -
Residence time of methane in the atmosphere is___________________?
Residence time of methane in the atmosphere is___________________?A. 3 – 7 days
B. 2 -3 days
C. 3 – 7 years
D. 2 – 3 years -
Three elements needed for the healthy growth of plants are_________________?
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 ?
Which of the following is a macro nutrient ?A. boron
B. iron
C. copper
D. carbon