MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the emissivity of the Earth's surface? |
| A. | 0.457 |
| B. | 0.578 |
| C. | 0.135 |
| D. | 1.42 |
| Answer» B. 0.578 | |
| 2. |
By how much has atmospheric carbon dioxide concentration increased ever since the Industrial Revolution? |
| A. | 0.2 |
| B. | 0.1 |
| C. | 0.4 |
| D. | 0.6 |
| Answer» D. 0.6 | |
| 3. |
Which of the following mentioned layers is NOT a homosphere? |
| A. | Exosphere |
| B. | Troposphere |
| C. | Ionosphere |
| D. | Mesosphere |
| Answer» B. Troposphere | |
| 4. |
How much of the sun's radiation energy is absorbed by the greenhouse gases to warm the planet? |
| A. | 75PW |
| B. | 1750GW |
| C. | 1500MW |
| D. | 150TW |
| Answer» B. 1750GW | |
| 5. |
In the lower layers of atmosphere, what range of wavelengths of light is predominant? |
| A. | Less than 100 nm |
| B. | Greater than 300 nm |
| C. | Between 100-300 nm |
| D. | All wavelengths are equally present |
| Answer» C. Between 100-300 nm | |
| 6. |
Ever since the industrial revolution, by how much has the average temperature of the Earth increased? |
| A. | 0.24oC |
| B. | 0.6oC |
| C. | 1.2oC |
| D. | 1.8oC |
| Answer» C. 1.2oC | |
| 7. |
The ozone hole is a phenomenon that has occurred in: |
| A. | Arctic region |
| B. | Northern temperate region |
| C. | Southern temperate region |
| D. | None of the mentioned |
| Answer» E. | |
| 8. |
Which of the following is the largest sink for carbon dioxide gas? |
| A. | Forests |
| B. | Oceans |
| C. | Ice sheets |
| D. | Grasslands |
| Answer» C. Ice sheets | |
| 9. |
'Roaring forties' is the term used to describe which of the following winds? |
| A. | East-to-west air winds in the southern hemisphere |
| B. | West-to east air winds in the northern hemisphere |
| C. | East-to-west air winds in the northern hemisphere |
| D. | West-to-east air winds in the southern hemisphere |
| Answer» E. | |
| 10. |
Which of the following greenhouse gas is contributed by cattle farming? |
| A. | Nitrous oxide |
| B. | Methane |
| C. | Carbon monoxide |
| D. | All of the mentioned |
| Answer» C. Carbon monoxide | |
| 11. |
Which layer of the atmosphere is responsible for aurora formation? |
| A. | Ozone layer |
| B. | Stratosphere |
| C. | Exosphere |
| D. | Ionosphere |
| Answer» E. | |
| 12. |
By international convention, which line marks the outermost boundary of the Earth's atmosphere? |
| A. | Space line |
| B. | Boundary line |
| C. | Karman line |
| D. | Astronaut line |
| Answer» D. Astronaut line | |
| 13. |
Which type of clouds is the found in the highest altitude of the Earth's atmosphere? |
| A. | Noctilucent |
| B. | Cirrostratus |
| C. | Stratus |
| D. | Cirrus |
| Answer» B. Cirrostratus | |
| 14. |
Which of the following indicates the correct order of the principal layers of the earth's atmosphere from top to bottom? |
| A. | Troposphere - Stratosphere - Mesosphere - Thermosphere - Exosphere |
| B. | Thermosphere - Stratosphere - Troposphere - Mesosphere - Exosphere |
| C. | Exosphere – Thermosphere - Mesosphere - Stratosphere - Troposphere |
| D. | Exosphere - Mesosphere - Thermosphere - Stratosphere - Troposphere |
| Answer» D. Exosphere - Mesosphere - Thermosphere - Stratosphere - Troposphere | |
| 15. |
Clouds help in cooling down the planet and do not contribute to greenhouse effect. True or false? |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
What does 'airborne fraction' with respect to greenhouse gases indicate? |
| A. | Amount of greenhouse gases that are released into air due to industrial process |
| B. | Proportion of greenhouse gases in air to all the other atmospheric gases |
| C. | Proportion of greenhouse gas emission that remain even after a specified time |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 17. |
The long UV-B radiations are important for vitamin D production of the skin. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
Turbopause is highest layer of the homosphere. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 19. |
What is the GWP of methane over a time period of 20 years? |
| A. | 86 |
| B. | 34 |
| C. | 43 |
| D. | 67 |
| Answer» B. 34 | |
| 20. |
What does GWP in the context of greenhouse gases indicate? |
| A. | Global Warming Parameters |
| B. | Gradual Warming Pattern |
| C. | Global Warming Patterns |
| D. | Global Warming Potential |
| Answer» E. | |
| 21. |
In which layer of the ionosphere does the International Space Station orbit? |
| A. | D |
| B. | E |
| C. | F |
| D. | G |
| Answer» D. G | |
| 22. |
Twinkling of stars is otherwise known as scintillation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 23. |
The Earth is still said to be in the 'ice age' period. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 24. |
What is the region of mild and irregular wind in the equatorial region known as? |
| A. | Trade winds |
| B. | Westerlies |
| C. | Doldrums |
| D. | Easterlies |
| Answer» D. Easterlies | |
| 25. |
What does the phrase 'anthropogenic CO2 emissions' mean? |
| A. | Human made CO2 emissions |
| B. | Industrial CO2 emissions |
| C. | Natural CO2 emissions |
| D. | All of the mentioned |
| Answer» B. Industrial CO2 emissions | |
| 26. |
Which of the following is a sink for carbon? |
| A. | Wetlands |
| B. | Old oil fields |
| C. | Saline waterbodies |
| D. | All of the mentioned |
| Answer» E. | |
| 27. |
What does ITCZ stand for corresponding to global wind patterns? |
| A. | Inner Tropospheric Convergence Zone |
| B. | Inter Tropical Convergence Zone |
| C. | Inner Tropical Continental Zone |
| D. | Inter Tropical Continental Zone |
| Answer» C. Inner Tropical Continental Zone | |
| 28. |
When was the ozone hole discovered? |
| A. | 1974 |
| B. | 1964 |
| C. | 1994 |
| D. | 1984 |
| Answer» E. | |
| 29. |
In which season is the ozone found at its maximum level in the northern hemisphere? |
| A. | Winter |
| B. | Summer |
| C. | Spring |
| D. | Autumn |
| Answer» D. Autumn | |
| 30. |
The GWP depends on which of the following factors? |
| A. | Absorption capability of IR radiations |
| B. | Atmospheric life-time |
| C. | Range of IR wavelengths it can absorb |
| D. | All of the mentioned |
| Answer» E. | |
| 31. |
Which of the following compounds have the highest GWP? |
| A. | Nitrous oxide |
| B. | CFC |
| C. | Water vapour |
| D. | Sulphur hexafluoride |
| Answer» E. | |
| 32. |
The ozone layer absorbs what range of wavelengths of the sun's radiation? |
| A. | 0.80 nm - 1.50 nm |
| B. | 200 nm - 315 nm |
| C. | 450 nm - 570 nm |
| D. | 600 nm - 750 nm |
| Answer» C. 450 nm - 570 nm | |
| 33. |
Volcanic eruptions contribute to the global greenhouse phenomenon. |
| A. | True |
| B. | False |
| Answer» C. | |
| 34. |
Troposphere contains nearly 80% of the atmosphere by mass. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 35. |
What does the term 'overcast' define? |
| A. | Phenomenon of indirect radiation exposure due to scattering |
| B. | Weather when cloud cover is equal to 8 oktas |
| C. | Both the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 36. |
The temperature decreases with altitude in the stratosphere layer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 37. |
What does the method of 'enhanced weathering' infer? |
| A. | It is a method used to spray sulphate aerosols to reduce the greenhouse effect |
| B. | It is a method of cloud seeding that is done to reduce the contribution of clouds to greenhouse effect |
| C. | It is a method used to remove CO2 from the air |
| D. | None of the mentioned |
| Answer» E. | |
| 38. |
Who discovered the ozone layer? |
| A. | Henri Buisson & Charles Fabry |
| B. | Carl Sagan & Charles Fabry |
| C. | G.M.B Dobson |
| D. | Carl Sagan &G.M.B Dobson |
| Answer» B. Carl Sagan & Charles Fabry | |