Environmental Issues Set 4 MCQs

Q1 | In the water of flooded river what type of change is seen in BOD?

Increase

Decreases

Remains same

Drastic decrease

Q2 | The death of fishes due to Eutrophication is because of

Increase O2 content

Decrease CO2 content

Decrease O2 content

) Increase CO2 content

Q3 | When huge amount of sewage is dumped in a river the BOD will

Increase

Decreases

Remains same

Drastic decrease

Q4 | The Montreal protocol was made effective from..

1987

1989

1976

1986

Q5 | What do you understand by greenhouse effect?

Increase in temperature due to increase in O2 concentration of the atmosphere

Decrease in temperature due to decrease in O2 concentration of the atmosphere

Increase in temperature due to increase in CO2 concentration of the atmosphere

Decrease in temperature due to decrease in CO2 concentration of the atmosphere

Q6 | In which sphere of atmosphere the ozone layer is seen?

Troposphere

Stratosphere

Homosphere

Thermosphere

Q7 | The release of phosphates and nitrates in lakes and ponds leads to

Reduce algal growth

Eutrophication

Nutrient enrichment

Both B and C

Q8 | Deforestation has an alarming effect on

Soil erosion

increase in grazing area

weed control

All of these

Q9 | Amruta Devi Bishnoi Wild life Protection award has recently instituted for

Extraordinary courage and dedication in protecting wildlife

Extraordinary courage and dedication in protecting plants

Extraordinary courage and dedication in protecting wild animals

Extraordinary courage and dedication in Protecting Environment

Q10 | Which is the main factor of water pollution?

Ammonia

Smog

detergents

None of these

Q11 | Which one of these has highest levels of DDT deposition?

Eel

Phytoplankton’s

Sea gull, Eagle

Crab

Q12 | Exhaust of motor vehicles produces pollutants like

CO

Hydrocarbons

SO2

All of these

Q13 | The stress reaction is caused by

Air pollution

Nuclear pollution

Water pollution

Noise pollution

Q14 | Deforestation may reduce the chances of…. (CBSE1990)

Rain fall

Frequent cyclones

Erosion of surface soil

Frequent landslide

Q15 | Most severe environmental hazard to mankind is due to…. (DPMT1986)

Air pollution

Radioactive pollution

Water pollution

Noise pollution

Q16 | Which is biodegradable pollutant?

Mercury salt

Polythene bags

Domestic sewage

Aluminum canes

Q17 | According to government of India’s new policy what should be the level of aromatic hydrocarbons of the concerned fuel?

40%

30%

42%

35%

Q18 | What would have been the temperature of the earth without green house effect?

-15° C

-28° C

-18°C

-10°C

Q19 | Which is the native place of Bishnoi community?

Bikaner

Jodhpur

Jamshedpur

Jaipur

Q20 | Formation of ozone hole is maximum over. .CBSE1997

Antarctica

Europe

Africa

India

Q21 | The main problem arose due to green revolution is…

Over production of food

Water logging

Soil salinity

Both B and C

Q22 | What is importance of catalytic converter?

They increases average of the vehicles

They reduces emission of harmful gases

They convert CO and nitric oxide into CO2 and H2O

Both B and C

Q23 | With the help of ____ SO2 is removed from the industrial exhaust?

Electrostatic precipitator

Solvents

Scrubber

None of these

Q24 | How much forest area is lost in tropics and temperate regions respectively?

40%, 1%

1%, 40%

33%,40%

40$,33%

Q25 | What is the rise in the temperature of earth since last three decades?

0.6° C

0.5°

6°C

5°C