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1. 1Pollution

   1. AThe contamination of air, water or soil by substances that are harmful to living organisms.
   2. BThe substance that contaminates air, water or soil and makes harmful effect in the environment.
2. 2pollutant

   1. AThe substance that contaminates air, water or soil and makes harmful effect in the environment.
   2. BThe contamination of air, water or soil by substances that are harmful to living organisms.
3. 3Atmosphere: The Earth is surrounded by a blanket of gases (O2, N2, CO2, H2 etc) called atmosphere.
   

   1. ATrue
   2. BFalse
4. 4
   •Air Pollution:
   

   1. AChemical reactions involving air pollutants create a poisonous gas ozone (O3).
   2. BThe contamination of atmosphere is called air pollution.
5. 5The important air pollutants are; nitrogen oxides (NO, NO2), carbon monoxide (CO), hydrocarbons (CH), sulphur oxides (SO2, SO3.
   

   1. ATrue
   2. BFalse
6. 6Primary Pollutants

   1. AThese are main gases for air pollution. Example: CO and SO2 from automobiles and combustion of coal/petroleum
   2. BWhen CO and SO2 reacts with sunlight forms more dangerous smog. This is called as photochemical smog.
7. 7Secondary Pollutants
   

   1. AThese are main gases for air pollution. Example: CO and SO2 from automobiles and combustion of coal/petroleum.
   2. BWhen CO and SO2 reacts with sunlight forms more dangerous smog. This is called as photochemical smog.
8. 8ACID RAIN is when [blank_start]Sulphur dioxide[blank_end] and [blank_start]oxides of nitrogen[blank_end] react with water vapors of the atmosphere to produce [blank_start]sulphuric acid[blank_end] and [blank_start]nitric acid[blank_end].
   

   1. ASulphur dioxide
   2. Boxides of nitrogen
   3. Csulphuric acid
   4. Dnitric acid
9. 9 Ground-level ozone: Chemical reactions involving air pollutants create a poisonous gas ozone (O3).
   

   1. ATrue
   2. BFalse
10. 10 Particulate matter: Air pollutants in the form of particulate matter can be harmful to human health.
    

    1. ATrue
    2. BFalse

11. 11The contamination of water bodies (lakes, rivers, oceans and groundwater) is not water pollution.
    

    1. ATrue
    2. BFalse
12. 12Nutrients Pollution
    

    1. ASome wastewater contains high levels of nutrients. It encourages algae and weed (waste plants) growth in the water, which use the oxygen in the water. Hence fish and other organisms in the water will die due to oxygen shortage in water.
    2. BThis is caused by micro-organisms like viruses, bacteria and protozoa. It makes fishes and other animals to die. Also cause serious illness to humans who drink such waters.
13. 13Surface Water Pollution
    

    1. ASurface water includes rivers, lakes and oceans. Dumping of hazardous substances makes surface water pollution.
    2. BThis is caused by micro-organisms like viruses, bacteria and protozoa. It makes fishes and other animals to die. Also cause serious illness to humans who drink such waters.
14. 14Ground Water Pollution:
    
    

    1. AHumans apply pesticides and fertilizers for plants. These chemicals are washed deep into the ground soil by rain water.
    2. BSurface water includes rivers, lakes and oceans. Dumping of hazardous substances makes surface water pollution.
15. 15Chemical Water Pollution: Many industries produce chemicals, fertilizers, pesticides etc. The waste water discharged from these industries can pollute water bodies. These affect aquatic, human and other animals.
    

    1. ATrue
    2. BFalse
16. 16 Pollutants such as [blank_start]lead and cadmium[blank_end] are eaten by small animals which are consumed by fish and shellfish.

    1. Alead and cadmium
17. 17People can get diseases such as [blank_start]hepatitis and cholera[blank_end] due to contaminated water.
    

    1. Ahepatitis and cholera
18. 18Prevention of Water Pollution.
    

    1. AAvoiding discharge of wastes into water bodies.
    2. BProper treatment of sewage and industrial waste water.
    3. CUse of proper drainage canals.
    4. Dall of the above
19. 19Prevention of Water Pollution.
    
    

    1. ARain water harvestment.
    2. BMore use of organic manure.
    3. CMinimum use of fertilizers and pesticides for crops.
    4. Dall of the above
20. 20[blank_start]Land Degradation[blank_end]: Human activities caused large areas of land to lose or reduce their capacity to support life forms and ecosystems.

    1. ALand Degradation
21. 21[blank_start]Solid Wastes[blank_end]: Paper, plastic containers, bottles, cans, food , broken electronic goods, broken furniture and hospital wastes are examples of solid wastes.

    1. ASolid Wastes
22. 22Biodegradable Wastes

    1. AFood wastes, paper products, plants and animal wastes.
    2. BPlastics, metals cans, broken computer and car parts.
23. 23 Non-biodegradable Wastes

    1. AFood wastes, paper products, plants and animal wastes.
    2. BPlastics, metals cans, broken computer and car parts.
24. 24Causes of Land Pollution
    
    

    1. ABreathing in polluted dust or particles. Cause problems in the human respiratory system, skin problems and various kinds of cancers.
    2. BWe get diseases due to eating fruits and vegetables that have been grown in polluted soil.
    3. CThe toxic materials that pollute the soil can get into the human body directly by water sources like lakes and rivers.
    4. Dall of the above
25. 25Effects of land pollution are all except
    

    1. ALandfills burning cause air pollution.
    2. BDump sites and landfills also cause serious problems like very bad smell and odor in the town.
    3. C\Landfills breed rodents like rats, mice and insects, who
       in-turn transmit diseases.
    4. Dusing biodegratable substances to prevent land pollution
26. 26[blank_start]Sound[blank_end] is essential to our life, but [blank_start]noise[blank_end] is not.
    

    1. ASound
    2. Bnoise
27. 27Noise interferes with normal activities such as sleeping, conversation and disrupts quality of life.
    

    1. ATrue
    2. BFalse
28. 28Noise (or sound) is measured in the units of [blank_start]decibels[blank_end] and is denoted by the dB.
    

    1. Adecibels
29. 29Residential Area (House):
    

    1. A45-55 dB
    2. B40-50 dB
    3. C55-65
30. 30Industrial Area:
    

    1. A45-55 dB
    2. B70-75 dB
    3. C55-65 dB
31. 31Silence zones (schools, hospitals):
    

    1. A40-50 dB
    2. B45-55 dB
    3. C55-65 dB
32. 32Commercial Area:
    
    

    1. A70-75 dB
    2. B55-65 dB
    3. C45-55 dB
33. 33 The changes (increase/decrease) in the normal water temperature in river, lake, ocean is called as [blank_start]thermal[blank_end] pollution.
    

    1. Athermal
34. 34About [blank_start]17%[blank_end] of the electrical energy generated in the world comes from nuclear power plants.

    1. A17%
    2. B20%
    3. C!%

Description

Quiz on Untitled, created by Keresa Benjamin on 14/12/2018.

Author

Keresa Benjamin

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