MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
'ODS' stands for |
| A. | Ozone depleting substance |
| B. | Ozone destructive substance |
| C. | Ozone deforming substance |
| D. | Ozone deploying substance |
| Answer» B. Ozone destructive substance | |
| 2. |
Ozone layer was discovered by French physicists, named as |
| A. | Einstein |
| B. | Charles Fabry and Henri Buisson |
| C. | Loveloak |
| D. | Darwin |
| Answer» C. Loveloak | |
| 3. |
Most visible effect of global warming can be seen in |
| A. | Arctic ocean |
| B. | Pacific ocean |
| C. | Antarctic ocean |
| D. | Indian ocean |
| Answer» B. Pacific ocean | |
| 4. |
DU stands for |
| A. | Doll Unit |
| B. | Double Unit |
| C. | Dolphins Unit |
| D. | Dobson Unit |
| Answer» E. | |
| 5. |
Vegetation- covered surfaces having: |
| A. | A medium albedo level |
| B. | A high albedo level |
| C. | A low albedo level |
| D. | A null albedo level |
| Answer» D. A null albedo level | |
| 6. |
Over last four decades, average growth rate of Nitrous oxide is about |
| A. | 0.25%/year |
| B. | 1.25%/year |
| C. | 2.25%/year |
| D. | 7.25%/year |
| Answer» B. 1.25%/year | |
| 7. |
CFCs absorbs infrared radiation, emitted by |
| A. | The Earth's surface |
| B. | The earth's core |
| C. | The earth's Mantle |
| D. | Earth's region |
| Answer» B. The earth's core | |
| 8. |
'OECD' Stands for |
| A. | Office of early childhood development |
| B. | Organization for Education Cooperation and Development |
| C. | Organization for Environment Cooperation and Development |
| D. | Organization for Economic Cooperation and Development |
| Answer» E. | |
| 9. |
In 1990, IPCC publised its first assessment report on |
| A. | Marine pollution |
| B. | Acid Rain |
| C. | GHGs |
| D. | Global Climate |
| Answer» E. | |
| 10. |
Tritium is used to trace spread of radioactivity in the |
| A. | Terrestrial areas |
| B. | Ocean area |
| C. | Coastal areas |
| D. | Mining zones |
| Answer» C. Coastal areas | |
| 11. |
Methane' absorbs infrared radiations, which affects |
| A. | Biosphere |
| B. | Troposheric Ozone |
| C. | Hydrosphere |
| D. | Mesosphere |
| Answer» C. Hydrosphere | |
| 12. |
Carbon dioxide is an efficient conductor of |
| A. | Energy |
| B. | Heat Radiation |
| C. | Fire |
| D. | GHGs |
| Answer» C. Fire | |
| 13. |
A compound is a substance formed from two or more elements chemically combined in: |
| A. | Chemical proportion |
| B. | Mixed proportion |
| C. | Fixed proportion |
| D. | Null propotion |
| Answer» D. Null propotion | |
| 14. |
What is involved in ozone depletion ? |
| A. | Chlorofluorocarbons (CFCs) |
| B. | Carbon tetrachloride (CCl₄) |
| C. | Carbon tetrafluoride (CF₄) |
| D. | All of above |
| Answer» E. | |
| 15. |
Anaerobic photosynthesis takes place in the |
| A. | Presence of Oxygen |
| B. | Absences of Carbon |
| C. | Presence of nitrogen |
| D. | Absence of Oxygen |
| Answer» E. | |
| 16. |
What screens out 99% of harmful rays of sunlight? |
| A. | CO |
| B. | CO₂ |
| C. | O₃ |
| D. | O₂ |
| Answer» D. O₂ | |
| 17. |
Which layer of atmosphere contains water vapors, clouds, dusts and pollution? |
| A. | Troposphere |
| B. | Stratosphere |
| C. | Hydrosphere |
| D. | Biosphere |
| Answer» B. Stratosphere | |
| 18. |
Kyoto conference was held in |
| A. | 1997 |
| B. | 1980 |
| C. | 1977 |
| D. | 1966 |
| Answer» B. 1980 | |
| 19. |
Agents of deforestation are: |
| A. | Infrasructure Developers |
| B. | Slash-and-burn farmers |
| C. | Commercial farmers |
| D. | All of above |
| Answer» E. | |
| 20. |
Photochemical smog forms, when NOx and VOCs react in presence of |
| A. | Air |
| B. | Wind |
| C. | Pollutants |
| D. | Solar Radiations |
| Answer» E. | |
| 21. |
Tornadoes are considered as smaller |
| A. | Wind |
| B. | Storms |
| C. | Waves |
| D. | All of above |
| Answer» C. Waves | |
| 22. |
Trees help in absorbing greenhouse gases such as: |
| A. | Carbon monoxide |
| B. | Carbon dioxide |
| C. | Methane |
| D. | Argon |
| Answer» C. Methane | |
| 23. |
Nonisothermal vortex shedding based on: |
| A. | Temperature |
| B. | Cold Air |
| C. | Humidity |
| D. | Cool Breeze |
| Answer» B. Cold Air | |
| 24. |
CFCs can destroy |
| A. | 100,000 ozone molecules |
| B. | 1000 ozone molecule |
| C. | 10,000 ozone molecules |
| D. | 20,000 ozone molecules |
| Answer» C. 10,000 ozone molecules | |
| 25. |
Main problem of wave power plants is cyclone and |
| A. | Sun light |
| B. | Heating |
| C. | severe Storm |
| D. | Wind |
| Answer» D. Wind | |
| 26. |
How many types of 'CFCS' have in a group? |
| A. | 2 |
| B. | 7 |
| C. | 9 |
| D. | 5 |
| Answer» E. | |
| 27. |
Without ozone layer all terrestrial animals will be |
| A. | extinct |
| B. | Vanished |
| C. | Dead |
| D. | Resurrected |
| Answer» C. Dead | |
| 28. |
UV radiation from Sun strikes molecules of oxygen, causes two oxygen atoms to: |
| A. | Combine together |
| B. | split apart |
| C. | Form together |
| D. | Produce |
| Answer» C. Form together | |
| 29. |
Wheat, rice and soya bean are: |
| A. | C3 Plants |
| B. | C4 Plants |
| C. | C1 Plants |
| D. | C2 Plants |
| Answer» B. C4 Plants | |
| 30. |
Airplanes travel in the |
| A. | Mesosphere |
| B. | Ionosphere |
| C. | Stratosphere |
| D. | Troposphere |
| Answer» D. Troposphere | |
| 31. |
When did United states ban CFCs usage in spray cans? |
| A. | 1975 |
| B. | 1978 |
| C. | 1976 |
| D. | 1970 |
| Answer» C. 1976 | |
| 32. |
In 1992, some 50 countries in the Earth summit in Rio signed a treaty about |
| A. | Reducing Pollutants |
| B. | reducing the GHGs |
| C. | Less polluting the environment |
| D. | Less carbon dioxide in the atmosphere |
| Answer» C. Less polluting the environment | |
| 33. |
Water takes large amount of heat input to give it a small: |
| A. | Fall in temperature |
| B. | Rise in temperature |
| C. | Decrease in temperature |
| D. | Fluctuation |
| Answer» C. Decrease in temperature | |
| 34. |
Developing countries are also known as: |
| A. | Progressive countries |
| B. | Third world countries |
| C. | Developed Countries |
| D. | Underdeveloped countries |
| Answer» C. Developed Countries | |
| 35. |
What does 'chlorofluorocarbon' (CFC) produce? |
| A. | Methane and ethane |
| B. | Methane and fluorine |
| C. | Methane and chlorine |
| D. | Methane and carbon |
| Answer» B. Methane and fluorine | |
| 36. |
According to climate scientists, main cause of global warming trend involves: |
| A. | Sulfuric acid |
| B. | Carbon dioxide |
| C. | Human diffusion of greenhouse effect |
| D. | Both b and c |
| Answer» E. | |
| 37. |
According to 'IPCC' defination, surface temperature of sun is: |
| A. | about 5000°C |
| B. | about 6000°C |
| C. | about 4000°C |
| D. | about 8000°C |
| Answer» C. about 4000°C | |
| 38. |
In climate sensitivity, average temperature rise under doubled carbon dioxide |
| A. | Concentration In the atmosphere |
| B. | Concentration In Biosphere |
| C. | Concentration In Stratosphere |
| D. | Concentration In Troposhere |
| Answer» B. Concentration In Biosphere | |
| 39. |
Ozone layer is positioned in the: |
| A. | Troposphere |
| B. | Ionosphere |
| C. | Stratosphere |
| D. | Biosphere |
| Answer» D. Biosphere | |
| 40. |
Average amount of ozone in stratosphere across globe, approximately |
| A. | 300 DU |
| B. | 900 DU |
| C. | 700 DU |
| D. | 500 DU |
| Answer» B. 900 DU | |
| 41. |
Depletion of ozone layer, resulting in an increased UV radiations, approaching the |
| A. | Forests |
| B. | Houses |
| C. | Space |
| D. | Earth Surface |
| Answer» E. | |
| 42. |
Since 1960s, thickness of arctic ice has decreased by |
| A. | 0.48 |
| B. | 0.5 |
| C. | 0.8 |
| D. | 0.9 |
| Answer» B. 0.5 | |
| 43. |
Which chemical was used for cleaming equipements? |
| A. | CO₂ |
| B. | Cl |
| C. | CaCO₃ |
| D. | CFCs |
| Answer» E. | |
| 44. |
Which gas is an extremely reactive in the |
| A. | Stratosphere |
| B. | Troposhere |
| C. | Biosphere |
| D. | Ionosphere |
| Answer» B. Troposhere | |
| 45. |
Anthropogenic effects are "human caused" such as: |
| A. | Burning of fossil fuels |
| B. | Volcanic Eruption |
| C. | Earthquake |
| D. | Avalouches |
| Answer» B. Volcanic Eruption | |
| 46. |
Biome is a distinctive ecological system characterised by nature of its: |
| A. | Insects |
| B. | Animals |
| C. | vegetation |
| D. | Soil |
| Answer» D. Soil | |
| 47. |
Black smog develops under cold and |
| A. | Rainy conditions |
| B. | Humid Conditions |
| C. | Dry Conditions |
| D. | Warm Conditions |
| Answer» C. Dry Conditions | |
| 48. |
Logging can cause degradation of |
| A. | Land |
| B. | Oceans |
| C. | Forests |
| D. | Coastal aeas |
| Answer» D. Coastal aeas | |
| 49. |
Ozone depletion is caused by human produced |
| A. | Carbon dioxide and bromine compounds |
| B. | chlorine and bromine compounds |
| C. | Carbon and sulfur |
| D. | HCs carbon ompound |
| Answer» C. Carbon and sulfur | |
| 50. |
El Nino is a pattern of ocean surface temperature in Pacific off coast of |
| A. | North America |
| B. | South America |
| C. | Canada |
| D. | Asia |
| Answer» C. Canada | |