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

1. Durban             

2. Doha

3. Lima                 

4. Warsaw

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

1. biomagnification

2. biodeterioration

3. biotransformation

4. biogeochemical cycling

Acid rain is caused by increase in the atmospheric concentration of

1. SO₂ and NO₂

2. SO₃ and CO

3. CO₂ and CO

4. O₃ and dust

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

1. food

2. light

3. essential minerals

4. 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?

1. Increased skin cancer

2. Reduced immune system

3. Damage to eyes

4. Increased liver cancer

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

1. ionosphere

2. mesosphere

3. stratosphere

4. troposphere

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

Kyoto Protocol was endorsed (supported) at

1. CoP-3

2. CoP-5

3. CoP-6

4. CoP-4

Global warming can be controlled by 

1. Reducing deforestation, cutting down use of fossil fuel

2. Reducing reforestation, increasing the use of fossil fuel

3. Increasing deforestation, slowing down the growth of human population

4. Increasing deforestation, reducing efficiency of energy usage

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

1. 1975

2. 1981

3. 1985

4. 1990