Q. No.Identify the incorrect statement regarding CFCs:
1.
They are synthetic gaseous compounds of carbon and halogens
2.
Major sources are the refrigeration industry and industrial solvents
3.
They have been only recently added to the atmosphere - synthesized during the 20th century
4.
They have a short life in the atmosphere - 5 to 12 years
The group most profoundly affected by global warming normally is:
| 1. | Plants | 2. | Insects |
| 3. | Birds | 4. | Mammals |
Which of the following is not a consequence of global warming?
| 1. | a rise in sea levels |
| 2. | a change in precipitation patterns |
| 3. | an equatorial shift of many species |
| 4. | eruption of plant diseases, pests, and weeds |
The concentration of ozone in the stratosphere is normally lowest during the period:
1. February - April
2. May - July
3. July - October
4. November - January
Which of the following commits the industrialised nations to reduce greenhouse gas emissions?
1. Montreal protocol
2. Kyoto protocol
3. UNECD earth summit
4. Alma Atta conference
A substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource is called:
| 1. | Pathogen | 2. | Allergen |
| 3. | Pollutant | 4. | Secondary metabolite |
Identify the incorrect statement regarding primary air pollutants:
| 1. | Carbon monoxide is a product of incomplete combustion of fossil fuels. |
| 2. | Methane is the most abundant hydrocarbon in the atmosphere |
| 3. | A high concentration of sulphur dioxide causes severe respiratory problems |
| 4. | Particulate matter less than 1 micrometer in diameter generally settle out in less than a day. |
What would be true for acid rain?
| 1. | Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. |
| 2. | The pH of acid rain is most commonly below 4. |
| 3. | Acid rain has direct significant effects on human health. |
| 4. | Both the higher pH and lower aluminium concentrations in surface water that occur as a result of acid rain can cause damage to fish and other aquatic animals. |
Awaaz Foundation is an Indian NGO working to especially control:
1. amniocentesis assisted female feticides
2. effects of pollution of our heritage monuments
3. noise pollution
4. emission of radioactively active gases
Catalytic converters can also contribute to environmental pollution by increasing the emission of:
| 1. | Methane | 2. | Hydrogen cyanide |
| 3. | Particulate matter | 4. | Carbon dioxide |
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