This set of Environmental Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Problem Soil Management & Remediation – Essential Features of Biological Treatment Systems”.
1. Technique which is used to re-mediate contamination above the water table is called as Bioluminescence.
a) True
b) False
View Answer
Explanation: Bioventing is the technique which is used to re-mediate contamination above the water table, bioluminescence is the inherent light emitting property of biological organisms.
2. Which of the following is not a principal approach under ex-situ techniques?
a) Soil banking
b) Soil slurry bioreactors
c) Land farming
d) Bio-sparging
View Answer
Explanation: Soil banking, Soil slurry bioreactors and Land farming are the common techniques used under ex-situ approaches whereas Bio-sparging is an In-situ technique.
3. ______________ technique is usually done within the earthwork banking that has been constructed.
a) Land farming
b) Bio sparging
c) Bio-accumulation
d) Bio-degradation
View Answer
Explanation: Land farming technique is usually done within the earthwork banking that has been constructed, whereas Bio sparging is the technique which is used to re-mediate contamination at the boundary level of water table, Immobilization uses Bio-accumulation processes, bio-degradation is the process that leads to degradation of compounds with the help of bacteria.
4. Land farming is a type of low tech bio reactor.
a) True
b) False
View Answer
Explanation: Land farming is a type of Ex-situ technique that takes place off-site and hence, can be treated as a type of low tech bio reactor.
5. Which of the following process is not involved in the pretreatment stage of land farming?
a) Soil excavation
b) Soil screening
c) Storage
d) Bio-magnification
View Answer
Explanation: Soil excavation, Soil screening, Storage are the processes involved in the pre treatment stage of land farming, but Bio-magnification is the process by which toxic substances get deposited in the food chain.
6. Land farming processes usually occurs in ____________
a) Lined earthworks
b) Rapid earthworks
c) DLAS architecture
d) Valley landscape
View Answer
Explanation: Land farming processes usually is carried out in Lined earthworks, whereas Rapid earthworks, DLAS architecture, Valley landscape are companies.
7. Which of the following is used to isolate the processes taking place in lined earthworks?
a) Low density lipoprotein
b) High density lipoprotein
c) Low density polyethylene liner
d) High density polyethylene (HDPE) liner
View Answer
Explanation: High density polyethylene (HDPE) liner is used to isolate the processes taking place in lined earthworks, Low density polyethylene liner is used for manufacturing plastic bags, Low density lipoprotein and High-density lipoprotein is found in human body.
8. Land farming processes relies on indigenous microorganisms to bring about __________
a) Oxidation of sodium thiosulphate
b) Methanogenesis
c) Remediation
d) Acetogenesis
View Answer
Explanation: Land farming processes relies on indigenous microorganisms to bring about Remediation, Oxidation of sulphur produces sulphuric acid upon oxidation which leads to pH drop, methanogensis results in production of methane gas, Acetogenesis forms acetate from CO2.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
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