Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

  • domestic service

  • dairy industry

  • petroleum industry

  • sugar industry

A lake which is rich in organic waste may result in

  • increased population of aquatic organisms due to minerals

  • drying of the lake due to algal bloom

  • increased population of fish due to lots of nutrients

  • mortality of fish due to lack of oxygen

The highest DDT concentration in aquatic food chain shall occur in 

  • phytoplankton

  • seagull

  • crab

  • eel

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers

  • ozone

  • ammonia 

  • methane

  • nitrous oxide

Joint Forest Management Concept was introduced in India during

  • 1970s

  • 1980s

  • 1990s

  • 1960s

A river with an inflow of domestic sewage rich in organic waste may result in

  • increased population of aquatic food web organisms

  • an increased production of fish due to biodegradable nutrients

  • death of fish due to lack of oxygen

  • drying of the river very soon due to algal bloom

The UN conference of Parties on climate change in the year 2012 was held at

  • Durban             

  • Doha

  • Lima                 

  • Warsaw

Increase in concentration of the toxicant at successive tropic levels is known as

  • biomagnification

  • biodeterioration

  • biotransformation

  • biogeochemical cycling

Acid rain is caused by increase in the atmospheric concentration of

  • SO2 and NO2

  • SO3 and CO

  • CO2 and CO

  • O3 and dust

Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of

  • food

  • light

  • essential minerals

  • Oxygen

Which of the following is not one of prime health risks associated with greater UV

radiation through the atmosphere due to depletion of stratospheric zone?

  • Increased skin cancer

  • Reduced immune system

  • Damage to eyes

  • Increased liver cancer

The zone of atmosphere in which the ozone layer is present is called

  • ionosphere

  • mesosphere

  • stratosphere

  • troposphere

A scrubber in the exhaust of a chemical industrial plant removes

  • Gases like sulphur dioxide

  • Particulate matter of the size 5 micrometer or above

  • Gases like ozone and methane

  • Particulate matter of the size 2.5 micrometer or less

Kyoto Protocol was endorsed (supported) at

  • CoP-3

  • CoP-5

  • CoP-6

  • CoP-4

Global warming can be controlled by 

  • Reducing deforestation, cutting down use of fossil fuel

  • Reducing reforestation, increasing the use of fossil fuel

  • Increasing deforestation, slowing down the growth of human population

  • Increasing deforestation, reducing efficiency of energy usage

The Air Prevention and Control of Pollution Act came into force in ?
  • 1975

  • 1981

  • 1985

  • 1990

In an area where DDT had been used extensively, the population of birds declined

significantly because

  • birds stopped laying eggs

  • earthworms in the area got eradicated

  • cobras were feeding exclusively on birds

  • many of the birds laid eggs and the eggs hatched early

Which one of the following is a wrong statement?

 

  • Most of the forests have been lost in tropical areas

  • Ozone in upper part of atmosphere is harmful to animals

  • Greenhouse effect is a natural phenomenon

  • Eutrophication is a natural phenomenon in freshwater bodies

Measuring Biochemical Oxygen Demand (BOD) is a method used for

scale

 

  • measuring the activity of Saccharomyces cerevisae in producing curd on a commercial

  • estimating the amount of organic matter in sewage water

  • working out the efficiency of oil driven automobile engines

  • working out the efficiency of RBCs about their capacity to carry oxygen

Which one of the following pairs of gases are the major cause of Green house effect?

  • CO2 and CO

  • CFCs and SO2

  • CO2 and N20

  • CO2 and O3

Which one of the following statements is wrong in case Bhopal gas tragedy?

  • Thousands of human beings died

  • Radioactive fall out engulfed Bhopal

  • It took place in the night of December 2/3, 1984

  • Methyl isocynate gas leakage took place

Eutrophication is often seen in

  • fresh water lakes

  • ocean

  • mountains

  • deserts

A renewable exhaustible natural resource is 

  • coal

  • petroleum

  • minerals

  • forest

dB is a standard abbreviation used for the quantitative expression of

  • the density of bacteria in a medium

  • a particular pollutant

  • the dominant Bacillus in a culture

  • a certain pesticide

The two gases making highest relative contribution to the greenhouse gases are

 

  • CO2 and CH4

  • CH4 and NO2

  • CFCs and N20

  • CO2 and N20

Chipko movement was launched for the protection of

  • grasslands

  • forests

  • liverstock

  • wet lands

DDT residues are rapidly passed through food chain causing biomagnification because

DDT is :-

  • lipid soluble

  • moderately toxic

  • non-toxic to aquatic animals

  • water soluble

Steps taken by the Government of India to control air pollution include

tests for carbon monoxide and hydrocarbons

vehicles

trucks

  • compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel

  • compulsory PUC (Pollution Under Control) certification of petrol driven vehicles, which

  • permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for

  • use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and

Montreal protocol aims at

  • reduction of ozone depleting substances

  • biodiversity conservation

  • control of water pollution

  • control of CO2 emission

Global agreement in specific control strategies to reduce the release of ozone depleting

substances, was adopted by

  • Rio de Janeiro Conference

  • The Montreal Protocol

  • The Koyoto Protocol

  • The Vienna Convention

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