Environmental Engineering

281. Air pollution is severe in

1. Cities
2. Industrialised areas
3. Densely populated areas
4. all of these

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282. Algal bloom results in

1. Global warming
2. Salination
3. Eutrophication
4. Biomagnification

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283. All are insitu conservation efforts except

1. National parks
2. Sanctuaries
3. Zoo
4. biosphere reserves

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284. All are particulate pollutants except

1. dust
2. ozone
3. soot
4. smoke

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285. All are physical pollutants except

1. heat
2. sound
3. radiations
4. soot

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286. All are primary pollutants except

1. Ammonia
2. Peroxy Acyl Nitrate (PAN)
3. sulphur dioxide
4. hydrogen sulphide

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287. All the statements are correct regarding ecological succession except

1. It is a random process
2. Species diversity increases as succession proceeds
3. The food chain relationships becomes more complex
4. The role of decomposers becomes more and more important

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288. An association between two individuals or populations where both are benefitted and where neither can survive without the other is

1. competition
2. commensalism
3. mutualism
4. protocoperation

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289. An ecosystem must have continuous external source of

1. minerals
2. energy
3. food
4. All of the above

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290. Approximately, 50% of total world species are present on

1. tropical rain forest
2. temperate rain forest
3. temperate deciduous forest
4. coral reefs

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