This set of Food Packaging Technology Multiple Choice Questions & Answers (MCQs) focuses on “Problem Soil Management & Remediation – In-Situ and Ex-Situ Techniques”.
1. In-situ based bio remediation involves introducing __________________ to contaminated areas.
a) Oxygen and nutrients
b) Carbon dioxide and methane
c) Nitrogen and CO2
d) CO and methane
View Answer
Explanation: Oxygen and nutrients are introduced to contaminated areas during bio remediation, CO2, methane, Nitrogen, CO, methane is not required to treat contaminated lands.
2. Which of the following major technique is not employed during in-situ bioremediation?
a) Biosparging,
b) Bioventing
c) Injection recovery
d) Bio-luminescence
View Answer
Explanation: In-situ bioremediation involves certain techniques like Biosparging, Bioventing and Injection recovery whereas bioluminescence is an inherent light emitting property of biological organisms.
3. What is the major benefit of in-situ based treatment?
a) Low intrusion
b) High intrusion
c) High contamination risk
d) High cost
View Answer
Explanation: Low intrusion is the major benefit of in-situ based treatment whereas High intrusion, High contamination risk, High cost problems are not associated with in-situ based bio remediation.
4. Which of the following technique is used to re-mediate contamination at the boundary level of water table?
a) Biosparging
b) Bio-accumulation
c) Bio-degradation
d) Bio-magnification
View Answer
Explanation: Biosparging is the technique which is used to re-mediate contamination at the boundary level of water table, Bio-magnification is the process by which toxic substances get deposited in the food chain, Immobilization uses Bio-accumulation processes, bio-degradation is the process that leads to degradation of compounds with the help of bacteria.
5. Which of the following process involves super-aeration of groundwater?
a) Biosparging
b) Bio-accumulation
c) Bio-degradation
d) Bio-magnification
View Answer
Explanation: Biosparging is the technique which involves super-aeration of groundwater, Bio-magnification is the process by which toxic substances get deposited in the food chain, Immobilization uses Bio-accumulation processes, bio-degradation is the process that leads to degradation of compounds with the help of bacteria.
6. Increasing the oxygenation of the stratum, it ultimately benefits the overall efficiency of soil remediation.
a) True
b) False
View Answer
Explanation: When the oxygen supply of the stratum is increased it leads to further mixing of the contents, growth of aerobic microbes and hence this ultimately increases the efficiency of soil remediation.
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