MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 17 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. |
Which of the following gases is responsible for the yellowing of the Taj Mahal? |
| A. | Organic carbon |
| B. | Black carbon |
| C. | Brown carbon |
| D. | All of the mentioned |
| Answer» E. | |
| 2. |
Which of the following constituent of photochemical smog causes the bronzing of plants? |
| A. | PBN |
| B. | PAN |
| C. | PFN |
| D. | Ketones |
| Answer» C. PFN | |
| 3. |
What is/are the inertial method(s) used to measure size of aerosol particles? |
| A. | Particle acceleration method |
| B. | Pulsation method |
| C. | Multi cyclone |
| D. | All of the mentioned |
| Answer» E. | |
| 4. |
When light is passed through a suspension, it's intensity decreases due to _________ |
| A. | Both scattering and diffraction |
| B. | Both diffraction and absorption |
| C. | Absorption only |
| D. | Both scattering and absorption |
| Answer» E. | |
| 5. |
What does the term 'liming' mean? |
| A. | Application of magnesium and calcium rich substances to soil |
| B. | Erosion of calcium carbonate(lime) zones in soil |
| C. | Excessive growth of lemon trees in acid rain prone regions |
| D. | None of the mentioned |
| Answer» B. Erosion of calcium carbonate(lime) zones in soil | |
| 6. |
The acidic air pollutants reach the Earth's surface because of wet deposition only. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
What type of colloid is an aerosol? |
| A. | Solid in gas |
| B. | Gas in solid or fluid |
| C. | Fluid in gas |
| D. | Fluid or solid in gas |
| Answer» E. | |
| 8. |
Aerosols contribute to global warming. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
What does CNC stand for in the context of aerosol particles? |
| A. | Cloudy nucleic condensation |
| B. | Condensation nucleus counter |
| C. | Chemical nucleic coagulation |
| D. | Cloudy nucleic coagulation |
| Answer» C. Chemical nucleic coagulation | |
| 10. |
What is the size range of respirable suspended particulate matter? |
| A. | Less than 1 micrometre |
| B. | Less than 10 micrometre |
| C. | Less than 100 micrometre |
| D. | Less than 0.1 micrometre |
| Answer» C. Less than 100 micrometre | |
| 11. |
The movement of particles from region of lower vapour to high vapour molecule concentration is known as diffusiophoresis. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Glass containers are generally not preferred for sampling rain water. Why? |
| A. | Glass containers are expensive |
| B. | Glass containers are not easy to maintain |
| C. | Glass containers affect the pH of the rain water |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 13. |
Below which of the following pH is rain regarded as 'acid rain'? |
| A. | 7 |
| B. | 7.3 |
| C. | 5.6 |
| D. | 6 |
| Answer» D. 6 | |
| 14. |
Who discovered the phenomenon of acid rain? |
| A. | George Brown |
| B. | James T. Stewart |
| C. | Robert Angus Smith |
| D. | Charles David |
| Answer» D. Charles David | |
| 15. |
The size of aerosol particles formed mechanically is minimum 1 micron. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
In rural areas, what has contributed significantly to particulate pollution? |
| A. | Incomplete combustion in vehicles |
| B. | Using wood for fire and cooking |
| C. | Fertilisers |
| D. | All of the mentioned |
| Answer» C. Fertilisers | |
| 17. |
What is the size range of atmospheric particulate matter? |
| A. | 0.1 – 10 microns |
| B. | 0.1 - 1 micron |
| C. | 1 - 10 microns |
| D. | 10 - 100 microns |
| Answer» B. 0.1 - 1 micron | |