MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
Less modification of the existing field characteristics are required to implement the recovery process by Microbial Oil Recovery technologies. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of these is not a strategy for the application of biosurfactants in oil recovery? |
| A. | Injection of biosurfactants into reservoir through well that produce microorganisms and multiply their growth in-situ |
| B. | Production of biosurfactants ex-situ while the same is injected into the reservoir |
| C. | Injecting selected nutrients into the reservoir |
| D. | Injecting microorganisms along with nutrients producing biomass |
| Answer» E. | |
| 3. |
Which is the most used bacteria strain in microbial oil recovery? |
| A. | Bacillus |
| B. | Pseudomonas |
| C. | Arthrobacterium |
| D. | Micrococcus |
| Answer» B. Pseudomonas | |
| 4. |
In which form of microbial product is Leuconostoc applied in microbial oil recovery? |
| A. | Biomass |
| B. | Surfactants |
| C. | Polymers |
| D. | Solvents |
| Answer» B. Surfactants | |
| 5. |
Clostridium is used as which metabolite in microbial oil recovery? |
| A. | Solvents, Acid and Gases |
| B. | Biomass, Surfactants and Polymers |
| C. | Solvents, Polymers and Gases |
| D. | Acids, Surfactants and Biomass |
| Answer» B. Biomass, Surfactants and Polymers | |
| 6. |
How the flow pattern in clogging mechanism is achieved? |
| A. | By increasing the pressure |
| B. | By increasing the viscosity |
| C. | Bydecrease in microbial cell mass |
| D. | By increasing the cell mass of microbes |
| Answer» E. | |
| 7. |
The effects of bacterial activity decreases with time and distancefrom the injection well. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Some strains of ______ bacteria can produce hydrogen, methane, acetate etc. by ________ of carbohydrates during initial growth phase. |
| A. | obligate anaerobic; oxidation |
| B. | facultative aerobic; reduction |
| C. | obligate anaerobic; fermentation |
| D. | facultative anaerobic; oxidation |
| Answer» D. facultative anaerobic; oxidation | |
| 9. |
Which microbe is used as a solvent and applied in microbial oil recovery? |
| A. | Leuconostoc |
| B. | Xanthomonas |
| C. | Brevibacterium |
| D. | Klebsiella |
| Answer» E. | |
| 10. |
Which oil recovery mechanism yields the most oil andis the most efficient oil recovery mechanism? |
| A. | Selective plugging by microorganisms and their metabolites |
| B. | Oil viscosity reduction by gas production |
| C. | Production of acids by dissolving minerals in the rock |
| D. | Degradation of long-chain saturated hydrocarbons |
| Answer» B. Oil viscosity reduction by gas production | |