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Match the items given in Column I with those in Column II and select the correct option given below :

        a       b      c       d
1.     ii        i      iii      iv
2.     i        iii     iv       ii
3.     i        ii      iv      iii
4.    iii       iv      i        ii

In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of
molecular oxygen?
1. Carbon
2. Cl
3. Oxygen
4. Fe

Which of the following is a secondary pollutant?
1. CO
2. ${\mathrm{CO}}_2$
3. ${\mathrm{O}}_3$
4. ${\mathrm{SO}}_2$

World Ozone Day is celebrated on
1. 5${}^{\mathrm{th}}$ June
2. 21${}^{\mathrm{st}}$ April
3. 22${}^{\mathrm{nd}}$ April
4. 16${}^{\mathrm{th}}$ September

Which one of the following statements is not valid for aerosols? 
1. They are harmful to human health
2. They alter rainfall and monsoon patterns
3. They cause increased agricultural productivity
4. They have negative impact on agricultural land

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents
from
1. Domestic sewage
2. Dairy industry
3. Petroleum industry
4. Sugar industry

A lake which is rich in organic waste may result in 
1. Increased population of aquatic organisms due to minerals
2. Drying of the lake due to algal bloom
3. Increased population of fish due to lots of nutrients
4. Mortality of fish due to lack of oxygen

The highest DDT concentration in aquatic food chain shall occur in 
1. Phytoplankton
2. Seagull
3. Crab
4. Eel

A river with an inflow of domestic sewage rich in organic waste may result in
1. Death of fish due to lack of oxygen
2. Drying of the river very soon due to algal bloom
3. Increased population of aquatic food web organisms
4. An increased production of fish due to biodegradable nutrients

Joint Forest Management Concept was introduced in India during 
1. 1990s
2. 1960s
3. 1970s
4. 1980s

Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of 
1. Oxygen
2. Food
3. Light
4. Essentia

Acid rain is caused by increase in the atmospheric concentration of : 
1. O3 and dust
2. SO2 and NO2
3. SO3 and CO
4. CO2 and CO

Increase in concentration of the toxicant at successive trophic levels is known as: 
1. Biogeochemical cycling
2. Biomagnification
3. Biodeterioration
4. Biotransformation

The UN conference of Parties on climate change in the year 2012 was held at 
1. Warsaw
2. Durban
3. Doha
4. Lima

High value of BOD (Biochemical Oxygen Demand) indicates that 
1. Consumption of organic matter in the water is higher by the microbes
2. Water is pure
3. Water is highly polluted
4. Water is less polluted

The UN Conference of Parties on climate change in the year 2011 was held in 
1. Qatar
2. Poland
3. South Africa
4. Peru

Rachel Carson's famous book "Silent Spring" is related to 
1. Ecosystem management
2. Pesticide pollution
3. Noise pollution
4. Population explosion

A scrubber in the exhaust of a chemical industrial plant removes 
1. Gases like sulphur dioxide
2. Particulate matter of the size 5 micrometer or above
3. Gases like ozone and methane
4. Particulate matter of the size 2.5 micrometer or less

A location with luxuriant growth of lichens on the trees indicates that the 
1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted

The zone of atomosphere in which the ozone layer is present is called 
1. Ionosphere
2. Mesophere
3. Stratosphere
4. Troposphere

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

The Air Prevention and Control of Pollution Act came into force in 
1. 1981
2. 1985
3. 1990
4. 1975

Kyoto Protocol was endorsed at
1. CoP - 5
2. CoP - 6
3. CoP - 4
4. CoP - 3

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

In an area where DDT has been used extensively. the population of birds declined significantly because
1. Cobras were feeding exclusively on birds
2. Many of the birds laid eggs but eggs did not hatch
3. Birds stopped laying eggs
4. Earthworms in the area got eradicated

Which one of the following statements is wrong in case of Bhopal tragedy? 
1. It took place in the night of December 2/3, 1984
2. Methyl Isocyanate gas leakage took place
3. Thousands of human beings died
4. Radioactive fall out engulfed Bhopal

Which one of the following pairs of gases are the major cause of "Greenhouse effect"?
1. CO2 and N2O
2. CO2 and O3
3. CO2 and CO
4. CFCs and SO2

“Good ozone” is found in the 
1. Stratosphere
2. Ionosphere
3. Mesosphere
4. Troposphere

Eutrophication is often seen in: 
1. Mountains
2. Deserts
3. Fresh water lakes
4. Ocean

The two gases making highest relative contribution to the greenhouse gases are 
1. CO${}_2$ and N${}_2$O
2. CO${}_2$ and CH${}_4$
3. CH${}_4$ and N${}_2$O
4. CFC${}_5$ and N${}_2$O

The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen
approximately by
1. 200 times
2. 1000 times
3. 2 times
4. 20 times

Which of the following is a secondary pollutant?
1. PAN
2. Aerosol
3. CO
4. CO${}_2$

Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5
micro meters or less?
1. It can be inhaled into the lungs
2. It can cause respiratory problems
3. It can directly enter into our circulatory system
4. It can cause inflammation and damage to the lungs

Which is the result of damage to relative biological effectiveness?
1. High temperature
2. Pollution
3. Radiation
4. Low temperature

The domestic sewage in large cities
1. Has a high BOD as it containing both aerobic and anaerobic bacteria
2. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment
Plants (STPs)
3. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen
4. Has very high amounts of suspended solids and dissolved salts

Which among the following is likely to have the highest levels of D.D.T. depositions in its body?
1. Sea gull
2. Phytoplankton
3. Eel
4. Crab

Sounds above what level are considered hazardous noise pollution?
1. Above 80 dB
2. Above 30 dB
3. Above 150 dB
4. Above 120 dB

A disease caused by eating fish contaminated by industrial waste containing mercury compounds, is called
1. Osteosclerosis
2. Hashimoto’s disease
3. Bright’s disease
4. Minimata disease

When huge amount of sewage is dumped into a river, its B.O.D. will
1. Slightly decrease
2. Remain unchanged
3. Increase
4. Decrease

The Taj Mahal is threatened due to the effect of
1. Oxygen
2. Hydrogen
3. Chlorine
4. Sulphur-dioxide