Environmental Issues · Question 40

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