Q. Which of the following is not a major source of groundwater contamination ?
1) Agricultural products
2) Septic tanks
3) Underground storage tanks
4) All of the above are major sources of groundwater contamination
Q. The depletion in the Ozone layer is caused by -
1) nitrous oxide
2) carbon dioxide
3) chlorofluorocarbons
4) methane
Q. Which of the following is not considered as part of water use planning ?
1) Waste water treatment
2) Storm sewer drainage
3) Salinization
4) Water use planning considers all of the above issues
Q. The stage in which the biological processes is used to purify water in a wastewater treatment plants is called -
1) secondary sewage treatment
2) primary sewage treatment
3) wastewater reduction
4) biochemical reduction
Q. Microbial Type Culture Collection Centre is situated at -
1) Chandigarh
2) New Delhi
3) Hyderabad
4) Bangalore
Q. Biotic environment includes -
1) producers
2) consumers
3) decomposers
4) All of the above
Q. Decomposers include -
1) bacteria
2) fungi
3) Both (A) and (B)
4) animals
Q. Abiotic environment does not include -
1) air
2) water
3) soil
4) plants
Q. Vermicomposting is done by -
1) fungus
2) bacteria
3) worms
4) animals
Q. The group of organisms which convert light into food are called -
1) autotrophs
2) heterotrophs
3) decomposers
4) omnivores
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