Environmental Science and Ecology - Mock Test 22

Question 211

The ultraviolet radiations in the stratosphere are absorbed by ?

A) SO2 B) Oxygen C) Ozone D) Argon

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Question 212

Maximum deposition of DDT will occur in ?

A) Phytoplankton B) Crab C) Eel D) Sea gull

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Question 213

Ultra-violet light causes ?

A) Photodynamic action B) Sticky metaphases C) Formation of pyrimidines D) Destruction of hydrogen bonds between complementary DNA strands

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Question 214

Major aerosol pollutant present in the jet plane emission is ?

A) Carbon monoxide B) Carbon tetrachloride C) Chlorofluorocarbon D) Sulphur dioxide

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Question 215

Which of the environmental pollutions can cause birth defects?

A) Smog B) CO C) SO2 D) Radioactivity

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Question 216

Lichens indicate pollution by ?

A) Ozone B) SO2 C) NO3 D) CO

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Question 217

Which of the following pollutants is discharged by jet planes?

A) Photo-chemical oxidants B) Fog C) Smog D) Aerosols

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Question 218

lf there was no CO2 in the atmosphere, the earth’s temperature would be ?

A) Less than the present B) Same as present C) Higher than the present D) Dependent on O2 content of air

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Question 219

Lead is one of the most serious environmental pollutants which affects ?

A) Air B) Soil C) Water D) Noise

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Question 220

Increase in the concentration of pollutants in higher trophic levels is known as ?

A) Biomagnification B) Biodegradation C) Eutrophication D) Recycling

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