This set of Environmental Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Introduction on Management Steps for Problem Soil Remediation”.
1. Which of the following is not a process of remediation?
a) Vitrification
b) Thermal
c) Bio-leaching
d) Chemical
View Answer
Explanation: In thermal process, contaminants removed by heat treatment, Vitrification is the use of high temperature that leads to fusion of contaminants, bio-leaching is a process used for extraction of metals and does not remove contaminants, Chemical method requires comparatively higher temperature and pressure to remove contaminants.
2. Soil remediation means cleaning up the _________
a) Bacterial contaminants
b) Residual effects of human activities
c) Biological contaminants
d) Non-Biological contaminants
View Answer
Explanation: Soil remediation is a process of removing residual effects of anthropogenic activities but bacterial contaminants don’t affect the land quality, hence, biological and non-biological contaminates do not affect the environment whereas it helps in fastening the process of bio-degradation.
3. What does physical method of treatment of contaminated materials include?
a) Microorganisms
b) Concentration and excavation
c) Toxic compounds
d) Ethidium bromide
View Answer
Explanation: Concentration and excavation is a physical method of treatment of contaminants, use of microorganisms is a biological method of treatment which is based on the activity of biological compounds, Ethidium bromide is carcinogenic, toxic compounds are not cost effective and also, harmful to the environment.
4. Which of the following is the most reliable method of soil remediation?
a) Bio-magnification
b) Bio-remediation
c) Lyophilization
d) Chemical method
View Answer
Explanation: Bio-remediation is the most efficient method as it uses biological organisms which is also environment friendly, Chemical method requires comparatively higher temperature and pressure, lyophilization is a process of freeze drying, Bio-magnification is the process by which toxic substances get deposited in the food chain.
5. Which of the following decreases the risk of secondary contamination in the physical method of soil remediation?
a) Concentration
b) Reduced cost
c) Quorum quenching
d) Lyophilization
View Answer
Explanation: Concentration of contaminants reduces the further risk of contamination as it involves addition of no reagents, lower energy demands leads to reduction in cost level but doesn’t reduce chances of secondary contamination, quorum quenching leads to inhibition of quorum sensing and lyophilization is a process of freeze drying.
6. Solidification is based on __________
a) CO2 release
b) Time consumption
c) Consume lots of energy
d) Encapsulation
View Answer
Explanation: Solidification is based on Encapsulation as it leads to capture of contaminants within and the process is not very fast, has minimal energy requirement, it doesn’t involve release of CO2.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
To practice all areas of Environmental Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
- Practice Biotechnology MCQs
- Check Environmental Biotechnology Books
- Apply for Biotechnology Internship
- Check Biotechnology Books
