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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Environmental Issues Set 3

Q1 | Biological treatment of water pollution can be done by
  • Lichen
  • Phytoplankton
  • Algae
  • None of these
Q2 | Eichornia is a…
  • Desert plant
  • Water plant
  • Terrestrial plant
  • Parasitic plant
Q3 | Who created the Haryana Welfare Club?
  • Ramesh Dagar
  • Sunderlal Bahuguna
  • Ahmad Khan
  • Suresh Dagar
Q4 | What is the major problem of using nuclear energy?
  • Accidental leakage
  • It is very costly
  • Safe Disposal
  • Both A and C
Q5 | Which is the recommended depth to burry nuclear waste?
  • 500mt
  • 5000mts
  • 600mts
  • 50mts
Q6 | Name the natural phenomenon responsible for heating of earth’s surface and atmosphere?
  • Global warming
  • Green house effect
  • Eutrophication
  • Aforestation
Q7 | What is the average temperature of earth maintained by green house effect?
  • 15°c
  • 18°c
  • 25°c
  • 30°c
Q8 | In which form earth ‘s surface reemits heat?
  • UV radiation
  • Infrared radiation
  • Gamma rays
  • rays
Q9 | Which gases are commonly known as green house gases?
  • CO2 & CH4
  • CO2 & NH4
  • CO & N2
  • NH4, CO ,SO2
Q10 | What is correct for the region labeled as a,b,c and d?
  • a- CO2 60% ,b- CH4 20% , c- CFC 14% ,d-N2O 6%
  • a- CFC60% ,b- CH4 20% , c- CO2 14% ,d-N2O 6%
  • a- CFC60% ,b- CO2 20% , c- CH4 14% ,d-N2O 6%
  • a- CFC60% ,b- CH4 20% , c- N2O 14% ,d- CO2 6%
Q11 | .In the given chart of biological magnification what does a and b indicate? Fish eating birds-DDT -25ppm
  • a=phytoplanktons,b=insects eating bird
  • a= Zooplanktons , b=large fish Small fish-DDT - 0.5ppm
  • a=DDT-0.03ppm,b=DDT-2ppm
  • a=DDT-0.04ppb,b-DDT-2ppb Water- DDT -0.0003ppm
Q12 | Name the disease caused by water pollution?
  • Polio
  • Typhoid
  • Tuberculosis
  • Leprosy
Q13 | Which disease is not caused by water pollution?
  • Cholera
  • Typhoid
  • Tuberculosis
  • Dysentery
Q14 | Which is the main pollutant content of domestic sewage?
  • Biodegradable organic matter
  • Biodegradable inorganic matter
  • Flurohydro carbons
  • Dissolve salts
Q15 | What I the result of El Nino Effect?
  • Melting of polar icecap
  • Rise in sea level
  • Melting of Himalayan snow caps
  • All of these
Q16 | What are the reasons for soil erosion and desertification?
  • Over cultivation
  • Unrestricted grazing
  • Deforestation
  • All of these
Q17 | Heavy metals can be defined as elements with density…
  • >5g/cm3
  • <5g/cm3
  • <5g/m3
  • >5g/cm3
Q18 | What should be the forest cover recommended by National forest policy1988?
  • 30% in plains and 76% in hill
  • 33% in plains and 67% in hills
  • 35% in plains and 76% in hills
  • 22% in plains and 70%in hills
Q19 | Name the community known for its peaceful coexistence with nature?
  • Bishnoi
  • Bikaneries
  • Krishnoi
  • Jhodhapuries
Q20 | Bad ozone is formed in ——— layer of atmosphere ?
  • Troposphere
  • Stratosphere
  • Thermosphere
  • Ozonosphere
Q21 | What is snow blindness?
  • Can not see due to Cataract
  • Cannot see in the snow
  • Inflammation of cornea
  • Inflammation of eyeball
Q22 | Which atoms are released by the action of UV rays on CFC?
  • O
  • C
  • Fl
  • Cl
Q23 | In which part of atmosphere degradation of ozone takes place?
  • Troposphere
  • Stratosphere
  • Thermosphere
  • Ozonosphere
Q24 | Measurement of ozone layer is done by ——— unit.
  • Du
  • Db
  • Ds
  • dv
Q25 | Formation of ozone gas in upper layer depends on
  • U V ray
  • Infrared
  • gamma rays
  • rays.