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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Environmental Issues Set 2

Q1 | More pollution loads in lake, no self purification because.
  • There is no O2 to sustain microbial activity
  • No sunlight available
  • Microbes die
  • Pollutants settles down at the bottom
Q2 | Warmth on the surface of the earth is due to
  • Solar radiation
  • Green house effect
  • Geothermal energy
  • All above
Q3 | Thinning of eggshell and their premature breaking is due to
  • Eutrophication
  • Global warming
  • Green house effect
  • Biological magnification
Q4 | Aging of lake is accelerated by
  • Cultural Eutrophication
  • Biological magnification
  • Biological accumulation
  • Algal bloom
Q5 | Which chemicals increase growth of aquatic organism?
  • Nitrogen and phosphoru
  • Calcium and iron
  • Nitrogen and calcium
  • Nitrogen and iron
Q6 | Arrange the following statements with reference to accelerated eutrophication in proper manner._ans_key_(p)Silt and debris pile up at the bottom of the lake_ans_key_(q)Marsh plants take roots in the shallows begin to fill the lake basin_ans_key_(r)Introduction of large number of nitrogen and phosphate in the pond_ans_key_(s)Encouragement of growth of aquatic organisms.
  • p,q,r,s,
  • r,s,q,p
  • r,s,p,q
  • s,r,p,q
Q7 | Give full form of FOAM.
  • Friends of Arcata Marsh
  • Friends of Arctic Marsh
  • Friends of Antarctic Marsh
  • Foam of Arcata Marsh
Q8 | In which cities Ecosan toilets are working?
  • Kerala and Srilanka
  • Shrinagar and Kerala
  • Kullu and Srilanka
  • Tamilnadu and Kerala
Q9 | Recycling of e-waste is done in developing countries like…
  • China, India, Pakistan
  • India, Pakistan Shrilanka
  • China, Pakistan, Bangaladesh
  • China, India, Shrilanka
Q10 | Name the metals recovered during recycling process of e-waste.
  • Gold, Nickle, Copper, Silicon
  • Gold, Copper, Silver, Magnecium
  • Gold, Silver, Copper, Selenium
  • Nickle, Copper, Silicon Silver
Q11 | Increase in the concentration of a nonbiodegradable substance of various tropic level is called
  • Eutrophication
  • Global warming
  • Biological bloom
  • Biological magnification
Q12 | Deforestation results in
  • Change in climatic condition
  • Reduce rain fall
  • Loss of biodiversity
  • All of these
Q13 | Chipko movement is associated with prevention of
  • Air pollution
  • Cutting of trees
  • River pollution
  • Construction of dams
Q14 | Jhum refers to.
  • Crop Cultivation
  • Social forestry
  • Shifting cultivation
  • Large scale agriculture
Q15 | Ultraviolet radiation from sunlight causes a reaction that produces
  • Fluoride
  • CO
  • SO2
  • Ozone
Q16 | The biological amplification of DDT in various tropic levels is known as
  • Eutrophication
  • Global warming
  • Biological bloom
  • Biological magnification
Q17 | BOD is related to
  • Detergent
  • Inorganic pollutants
  • Organic pollutants
  • Organophosphorus
Q18 | CFC’s splits up in stratosphere to release chlorine by the action of..
  • UVA
  • UVB
  • UVC
  • All of these
Q19 | Noise was recognized as air pollutant through amendment of
  • Environment act
  • the air act
  • Noise act
  • All of above
Q20 | If there was no CO2 in the earth’s atmosphere, the temperature of earth’s surface would be. CBSE1995
  • Dependent on amount of O2 in the atmosphere
  • Higher than present
  • Less than present
  • The same
Q21 | With the help of Electrostatic precipitators how much particulate pollutants can be removed?
  • 50%
  • 99%
  • 40%
  • 100%
Q22 | Enrichment of a water body with organic waste results in sudden algal bloom. This phenomenon is known as
  • Eutrophication
  • Aqua bloom
  • Biological bloom
  • Biological magnification
Q23 | Which of the following is mismatched?
  • Fossil fuel burning - Release of CO2
  • Nuclear power station - Radioactive waste
  • Solar energy – Green house effect
  • Biomass combustion – Release of CH4
Q24 | Which of the following is not causing pollution?
  • Thermal power plant
  • Nuclear power plant
  • Automobiles
  • Hydroelectric power plant
Q25 | Soil conservation can be best achieved by having …
  • Wind screen
  • Good plant cover
  • Restricted human activity
  • Low rain fall