MCQOPTIONS
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MCQOPTIONS
This section includes 20 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. |
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. | |
| 2. |
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 | |
| 3. |
The long UV-B radiations are important for vitamin D production of the skin. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
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 | |
| 5. |
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 | |
| 6. |
THE_LONG_UV-B_RADIATIONS_ARE_IMPORTANT_FOR_VITAMIN_D_PRODUCTION_OF_THE_SKIN.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
When was the ozone hole discovered?$ |
| A. | 1974 |
| B. | 1964 |
| C. | 1994 |
| D. | 1984 |
| Answer» E. | |
| 8. |
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 | |
| 9. |
The Montreal Protocol bans the production of which of the following chemical substances? |
| A. | Chlorine, bromine, CFCs, freons |
| B. | Carbon tetrachloride, halons, trichloroethane, CFCs |
| C. | CFCs, bromine, halons, freons |
| D. | CFCs, halons, freons |
| Answer» C. CFCs, bromine, halons, freons | |
| 10. |
What does EESC stand for in context of ozone depleting compounds? |
| A. | Equivalent Effective Stratospheric Chlorine |
| B. | Equivalent Effective Stratospheric Chlorofluorocarbons |
| C. | Equivalent Energy Saving Compounds |
| D. | Energy Effective Stratospheric Compounds |
| Answer» B. Equivalent Effective Stratospheric Chlorofluorocarbons | |
| 11. |
Which of the following chemicals are responsible for the depletion of the stratospheric ozone layer? |
| A. | Refrigerants |
| B. | Propellants |
| C. | Foam-blowing agents |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
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. | |
| 13. |
Which of the following UV radiations is responsible for causing sun burns and skin cancer? |
| A. | UV-A |
| B. | UV-B |
| C. | UV-C |
| D. | All of the mentioned |
| Answer» C. UV-C | |
| 14. |
Nitrogen also helps in preventing UV rays from reaching the Earth. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
Between what altitudes, is the ozone layer found in highest concentrations? |
| A. | 10-20km |
| B. | 20-40km |
| C. | 40-55km |
| D. | 55-70km |
| Answer» C. 40-55km | |
| 16. |
Who discovered the formation of ozone from photochemical reactions? |
| A. | G.M.B Dobson |
| B. | Sydney Chapman |
| C. | Carl Sagan |
| D. | Henri Buisson |
| Answer» B. Sydney Chapman | |
| 17. |
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 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 570 nm | |
| 18. |
Which of the following devices can be used to measure ozone in the stratosphere from the ground? |
| A. | Spectrometer |
| B. | Photometer |
| C. | Spectrophotometer |
| D. | Spectro-ozonometer |
| Answer» D. Spectro-ozonometer | |
| 19. |
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 | |
| 20. |
What is the average concentration of ozone in the ozone layer of the atmosphere? |
| A. | Nearly 100% |
| B. | Greater than 90% |
| C. | Between 10-50% |
| D. | Less than 10ppm |
| Answer» E. | |