Environmental Issues

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

1. Biomagnification
2. Biotransformation
3. Biodeterioration
4. Biogeochemical cycling

The UN Conference of Parties on climate change in the year 2011 was held in :

1. Peru
2. Qatar
3. Poland
4. South Africa

Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

1. Increased liver cancer
2. Increased skin cancer
3. Damage to eyes
4. Reduced Immune System

High value of BOD (Biochemical Oxygen Demand) indicates that :

1. water is highly polluted
2. consumption of organic matter in the water is higher by the microbes
3. water is pure
4. water is less polluted

Rachel Carson's famous book "Silent Spring" is related to:

1. Population explosion
2. Pesticide pollution
3. Ecosystem management
4. Noise pollution

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

1. Mesosphere
2. Stratosphere
3. Ionosphere
4. Troposphere

A scrubber in the exhaust of a chemical industrial plant removes :

1. particulate matter of the size 5 micrometer or above
2. particulate matter of the size 2.5 micrometer or less
3. gases like ozone and methane
4. gases like sulphur dioxide

Kyoto-Protocol was endorsed at :

1. CoP-6
2. CoP-4
3. CoP-3
4. CoP-5

Global warming can be controlled by :

1. Increasing deforestation, slowing down the growth of human population
2. Reducing deforestation, cutting down use of fossil fuel
3. Increasing deforestation, reducing efficiency of energy usage
4. Reducing reforestation, increasing the use of fossil fuel

The Air (Prevention and Control of Pollution) Act came into force in :

1. 1985
2. 1981
3. 1990
4. 1975

The second commitment period for Kyoto Protocol was decided at :

1. Doha
2. Cancun
3. Durban
4. Bali

Climate of the world is threatened by :

1. Decreasing amount of atmospheric carbon dioxide
2. Increasing concentration of atmospheric oxygen
3. Decreasing amount of atmospheric oxygen
4. Increasing amount of atmospheric carbon dioxide

Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5 micrometers or less?

1. It can directly enter into our circulatory system
2. It can be inhaled into the lungs
3. It can cause respiratory problems
4. It can cause inflammation and damage to the lungs

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

1. Earthworms in the area got eradicated
2. Cobras were feeding exclusively on birds
3. Birds stopped laying eggs
4. Many of the birds' eggs laid did not hatch

Which one of the following is a wrong statement?

1. Most of the forests have been lost in tropical areas
2. Greenhouse effect is a natural phenomenon
3. Ozone in upper part of atmosphere is harmful to animals
4. Eutrophication is a natural phenomenon in freshwater bodies

Measuring biochemical oxygen demand (BOD) is a method used for

1. Working out the efficiency of oil driven automobile engines
2. Estimating the amount of organic matter in sewage water
3. Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale
4. Working out the efficiency of R.B.Cs. about their capacity to carry oxygen

"Good ozone" is found in the

1. Troposphere
2. Ionosphere
3. Stratosphere
4. Mesosphere

Eutrophication is often seen in :

1. Ocean
2. Mountains
3. Deserts
4. Fresh water lakes

Which one of the following pairs of gases is the major cause of "greenhouse effect"?

1. CFCs and SO2
2. CO2 and CO
3. CO2 and N2O
4. CO2 and O3

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

1. Thousands of human beings died
2. It took place in the night of December 2/3, 1984
3. Radioactive fallout engulfed Bhopal
4. Methyl isocyanate gas leakage took place

Which one of the following is the correct expanded form of the given acronym?

1. IPCC = International Panel for Climate Change
2. EPA = Environmental Pollution Agency
3. UNEP = United Nations Environmental policy
4. IUCN = International Union for Conservation of Nature and Natural Resources

When domestic sewage mixes with river water

1. The river water is still suitable for drinking as impurities are only about 0.1%
2. Small animals like rats will die after drinking river water
3. The increased microbial activity releases micro-nutrients such as iron
4. The increased microbial activity uses up dissolved oxygen

A renewable exhaustible natural resource is –

1. Forest
2. Minerals
3. Coal
4. Petroleum

dB is a standard abbreviation used for the quantitative expression of –

1. the dominant Bacillus in a culture
2. the density of bacteria in a medium
3. a certain pesticide
4. a particular pollutant

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

1. CFCs and N2O
2. CO2 and N2O
3. CO2 and CH4
4. CH4 and N2O

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by :

1. The Montreal Protocol
2. The Kyoto Protocol
3. The Vienna Convention
4. Rio de Janeiro Conference

Biochemical Oxygen Demand (BOD) in a river water :

1. Gives a measure of Salmonella in the water
2. Has no relationship with concentration of oxygen in the water
3. Increases when sewage gets mixed with river water
4. Remains unchanged when algal bloom occurs

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

1. Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles
2. Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
3. Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks
4. Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel

Montreal protocol aims at :

1. Control of water pollution
2. Biodiversity conservation
3. Control of CO2 emission
4. Reduction of ozone depleting substances

DDT residues are rapidly passed through food chain causing biomagnification because DDT is :

1. Moderately toxic
2. Water soluble
3. Non-toxic to aquatic animals
4. Lipo soluble