Are you looking for Mcqs on Environmental issues? If Yes then you are at right place. Here you will find Environmental issues Mcq Questions and Answers, Trivia, Quiz, Interview MCQ & Environmental issues Current Affairs for Competitive Exams like Neet exams, around 30% to 40% of Neet questions are asked from given Environmental issues Mcqs. as you know Questions and Ansers on Environmental issues is very important for Neet Exam. In this Environmental issues MCQ section for Neet competition we are covering MCQS on Environmental issues
Question : In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (s), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) has been arranged in ascending order?
A. SE < PE < S < DE
B. PE < S < SE < DE
C. S < DE < PE < SE
D. SE < S < PE < DE
Question : Which of the following strategy is not a correct approach to reduce global warming?
A. Reducing the greenhouse gas emission by limiting the use of fossil fuels
B. Increase the vegetation cover particularly the forest for photosynthetic utilization of CO2
C. Minimizing the use of nitrogen fertilizers in agriculture for reducing N2O emissions.
D. Increasing the use of air conditioners, refrigeration units and production of plastic foams and propellants in aerosol spray cans
Question : Deforestation results in
A. Increased sunlight
B. Increased grazing area
C. Weed control
D. Soil erosion
Question : The amount of fresh water on earth frozen as polar or glacial ice is
A. 0.5 %
B. 0.02 %
C. 0.01%
D. 1.97 %
Question : Why is ozone concentration less over the north and south poles?
A. CFCs accumulate only in an area where the air is cold
B. CFC use is highest in these areas
C. CFCs stick to frozen water vapour and can act as catalysts
D. UV rays are stronger in the atmosphere
Question : Identify the most efficient device to eliminate particulate matter from industrial emissions?
A. Cyclonic separators
B. Trajectory separators
C. Incineration
D. Electrostatic precipitator
Question : Which pollutant is non-degradable?
A. Smoke
B. Polythene
C. Copper scraps
D. Iron scraps
Question : Excessive fertilizer discharge into water bodies results in
A. Growth of fish
B. Death of hydrophytes
C. Eutrophication
D. Silt
Question : Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to total global warming?
A. CFCs 14%, Methane 20%
B. CO2, 40%, CFCs 30%
C. N2O 6%, CO2 86%
D. Methane 20%, N2O 18%
Question : Which of the following is not considered an atmosphere pollutant?
A. CO2
B. SO2
C. Hydrogen
D. CO
Question : Extensive planting of trees is known as
A. afforestation
B. agroforestry
C. deforestation
D. social forestry
Question : Carbon dioxide is known as a greenhouse gas because it is
A. Used in green-house to increase plant growth
B. Transparent to heat but traps sunlight
C. Transparent to sunlight but traps heat
D. Transparent to both sunlight and heat
Question : Greenhouse gases include
A. CO2, CFC, CH4 & NO2
B. CO2, O2, N2, NO2 & NH3
C. CH4, N2, CO2 & NH3
D. CFC, CO2, NH3 & N2
Question : Organic substances found in the biosphere necessarily contain
A. Silica
B. Carbon
C. Oxygen
D. Nitrogen
Question : Eggshell thinning in birds is caused by DDT because it inhibits
A. calmodulin
B. calcium ATPase
C. magnesium ATPase
D. carbonic anhydrase