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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