Which one of the following pairs of gases are the cause of 'Greenhouse effect'?
1.
2.
3.
4.
1. | UNEP - United Nations Environmental Policy |
2. | EPA - Environmental Pollution Agency |
3. | IUCN -International Union for Conservation of Nature and Natural Resources |
4. | IPCC -International Panel for Climate Change |
1. Thousands of human beings died
2. Radioactive fall-out engulfed Bhopal
3. It took place on the night of December 2/3, 1984
4. Methyl isocyanate gas leakage took place
Match correctly the following and choose the correct option
(i) Environment Protection Act A. 1974
(ii) Air Prevention & Control of Pollution Act B. 1987
(iii)Water Act C. 1986
(iv)Amendament of Air Act to include noise D. 1981
The correct matches is;
1. i-C, ii-D, iii-A, iv-B
2. i-A, ii-C, iii-B, iv-D
3. i-D, ii-A, iii-B, iv-C
4. i-C, ii-D, iii-B, iv-A
Fill up the blanks:
i. In a scrubber, the exhaust is passed through a spray of _______.
ii. According to Central Pollution Control Board , particulate size _________ or less in diameter are responsible for causing the greatest harm to human health.
iii. Electrostatic precipitator, which can remove __________ present in the exhaust from a thermal power plant.
iv. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and ______.
i ii iii iv
1. Lime 2.8 micro-meters Gases like sulphur dioxide Hydrogen
2. Kerosene 2.5 micro-meters Gases like sulphur dioxide Water
3. Lime 2.5 micro- meters Over 99 per cent Water
particulate matter
4. Kerosene 2.8 micro- meters Over 99 per cent Hydrogen
particulate matter
Biochemical Oxygen Demand (BOD) in river water:
1. | remains unchanged when algal bloom occurs |
2. | has no relationship with the concentration of oxygen in the water |
3. | gives a measure of Salmonella in the water |
4. | increases, when sewage gets mixed with river water |
Ultrasound of how much frequency is beamed into a human body for sonography?
1. 30-40 MHz
2. 15-30 MHz
3. 1-15 MHz
4. 45-70 MHz
Photochemical smog pollution does not contain:
1. ozone
2. nitrogen dioxide
3. carbon dioxide
4. PAN (Peroxy Acyl Nitrate)
The limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal wastewater into natural surface water is:
1. < 3.0 ppm
2. < 10 ppm
3. < 100 ppm
4. < 30 ppm
Which of the following supports a dense population of plankton and littoral vegetation?
1. Oligotrophic
2. Eutrophic
3. Lithotrophic
4. Agroecotrophic