MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The process of Leaching is basically the removal of soluble salts that are present in the soil beyond the root zone. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which technique is not used to manage saline soils? |
| A. | End-of-pipe |
| B. | Subsurface drainage |
| C. | Skimming well technology |
| D. | Leaching |
| Answer» B. Subsurface drainage | |
| 3. |
Which among the following is a method of managing the soil salinity? |
| A. | Drainage |
| B. | Harmful algal blooms |
| C. | Bio-remediation |
| D. | Bio-degradation |
| Answer» B. Harmful algal blooms | |
| 4. |
The process by which the saline water underlying freshwater rises upward into the freshwater zone is called as _______ |
| A. | Upconing |
| B. | Bio-remediation |
| C. | Bio-degradation |
| D. | Bio-magnification |
| Answer» B. Bio-remediation | |
| 5. |
How does salt reaches the soil surface during dry season? |
| A. | Diffusion |
| B. | Capillary rise |
| C. | Active transport |
| D. | Passive transport |
| Answer» C. Active transport | |
| 6. |
Arrange these soluble cations (Na, Ca, K, Mg) in ascending order of abundance of soluble cations found in saline costal soils. |
| A. | Na>Mg>Ca>K |
| B. | Mg>Na>Ca>K |
| C. | K>Mg>Ca>Na |
| D. | Na>Mg>K>Ca |
| Answer» B. Mg>Na>Ca>K | |
| 7. |
Which of the salts are found in abundance in coastal saline soils? |
| A. | Oxygen |
| B. | NaCl and Na<sub>2</sub>SO<sub>4</sub> |
| C. | Nitrogen |
| D. | Carbon monoxide |
| Answer» C. Nitrogen | |
| 8. |
Sea water intrusions consists of a lot of Geo-chemical process, which of the following is not included in the same? |
| A. | Inter-aquifer mixing |
| B. | Anthropogenic contamination |
| C. | Increasing dissolved oxygen |
| D. | Mobilization of brines |
| Answer» D. Mobilization of brines | |
| 9. |
Soil salinity in coastal areas is due to the presence of ground water which is saline and overflow of sea water in the low-lying areas. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
High salt concentration leads to osmotic stress in plants. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
The process by which the salt content in the soil increases is called as _______ |
| A. | Engineered biopiling |
| B. | Soil salinization |
| C. | Land farming |
| D. | Bio-sparging |
| Answer» C. Land farming | |
| 12. |
Which of the following is not an after effect of soil salinization? |
| A. | Reduction in soil quality |
| B. | Limited growth of crops |
| C. | Constrains agricultural productivity |
| D. | Increases the soil fertility |
| Answer» E. | |