Which of the following air pollutants is more dangerous for ozone layer ?
A. CFC
B. CO2
C. CO
D. Oxides of nitrogen
Environmental Chemistry
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