This set of Environmental Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Microbial Transformations of Pesticides – Decarboxylation”.
1. Which of the following characteristics is not important to Microbial Transformations of Pesticides by decarboxylation process?
a) Quantity
b) Concentration
c) Color
d) Physical or chemical properties
View Answer
Explanation: Color is not a very important property to define the characteristics of pesticides as it doesn’t interfere with the property. Quantity, concentration, physical or chemical properties or infectious characteristics are important to pesticides as they define their properties and categories them into solid wastes that are hazardous to the next environment or humans.
2. Which of the following is not an ill-effect of improper handling of Pesticides?
a) Threat to the environment
b) Increase in mortality rate
c) Irreversible illness
d) Decrease in mortality rate
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Explanation: Increase in mortality rate, irreversible illness, threat to the environment and humans when not disposed of properly are several ill-effects of improper handling of Pesticides. But this definitely doesn’t decrease the mortality rate as it poses serious threats and potential hazard to human health.
3. It is the responsibility of the operators to take care of the disposed of Pesticides.
a) True
b) False
View Answer
Explanation: It is the prime responsibility of the operators or the occupier or the dweller to take care of the hazardous wastes, its disposal and handle it properly to avoid its adverse effect on the environment and human health under the law set by the Indian government.
4. Which of the following is not a serious hazardous characteristic of a pesticide?
a) Toxicity
b) Ignitability
c) Corrosiveness
d) Degradability
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Explanation: Degradability is not a hazardous characteristic of the waste; it is always a good approach if the waste can be degraded safely without causing any major damage to the environment. But toxicity, ignitability, corrosiveness and reactivity are a few serious hazardous characteristics of the waste, which if not treated poses serious health hazards and environmental damage.
5. Which of the following is not a major concern in waste treatment processes?
a) Sludge
b) Ash
c) Organic solvents
d) Noise
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Explanation: Noise is not a waste that is generated in the waste treatment processes as it is a sound which affects the environment but physically doesn’t, so, it’s not a major concern. Whereas, sludge, ash, organic solvents are generated during various processes like incineration, wet scrubbers, distillation etc. These are generated in waste treatment processes and can be a serious threat to the environment if not disposed of properly.
6. In provision of the rules, which of the following is not appropriate with respect to the pesticide management?
a) Packaging
b) Labelling
c) Transport
d) Expenses
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Explanation: Packaging, labelling and transport of hazardous wastes should be done properly in order to avoid any hazardous contamination of the wastes with the environment and with humans. But the cost price of the waste is irrelevant here as these factors deals with the handling of the wastes.
7. Spent hardening salt is a potential waste in which of the following processes of hardening?
a) Steel
b) Rock salt
c) Gold
d) Coal
View Answer
Explanation: Hardening of steel generates a hazardous waste that is Spent hardening salt, cyanide, nitrate and nitrate sludge which is very much hazardous to the environment and human health, so, it should be disposed of properly. But Hardening of rock salt, hardening of gold, hardening of coal doesn’t produce the wastes listed above because of different processing.
8. Which of the following combination methods can be used to process the pesticides?
a) Decarboxylation
b) Solidification
c) Incineration
d) Chemical oxidation
View Answer
Explanation: Decarboxylation reaction performed with help of carboxylase enzymes helps in the process. Solidification, incineration, chemical oxidation, aerobic oxidation or anaerobic fermentation are the combination methods that can be used to process the hazardous wastes, designed to treat or dispose of the hazardous wastes safely.
9. What can be a potential threat in the purification processes for organic solvents?
a) Spent carbon
b) Methane
c) High water content
d) Less water contents
View Answer
Explanation: Organic solvents are potential wastes which should be purified. The processes of purification of organic solvents usually generate wastes like spent carbon, spent catalyst and filters with organic liquids in them. Methane, high water content, less water content, are the wastes generated in other treatment methods and not in the purification processes for organic solvents.
10. Flue gas dust is a pesticide.
a) True
b) False
View Answer
Explanation: Flue gas dust is a dangerous waste of the secondary zinc production, the hazardous waste in the production processes usually generate wastes like zinc fines, dust, ash and sludge and filter press cake out of zinc sulphate. Other wastes from zinc ash are also generated.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
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