1. During the process of bioremediation appropriate pH for microbial growth ranges from______.
a. 6.0-7.0
b. 7.5-8.5
c. 7.0-8.0
d. 6.5-7.5
Correct Answer: d
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2. Technology of Bioremediation was reportedly invented by________ in ______________.
a. George M. Robinson, 1965
b. Santa maria, 1960
c. George M. Robinson, 1960s
d. George M. Robinson, 1960
Correct Answer: c
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3. Methanogenic microbes become much significant at___________.
a. Sludge digestion stage
b. Primary treatment stage
c. Secondary treatment stage
d. Biological oxication stage
Correct Answer: a
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4. Height of soil piles is about
a. 10ft
b. 15ft
c. 25ft
d. 20ft
Correct Answer: d
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5. Prior to degradation the process of adding cultured microorganisms into the subsurface for the purpose of biodegrading specific soil and groundwater contaminants.
a. Bio-degradation
b. Acclimation
c. Bioassimilation
d. Bioaugmentation
Correct Answer: d
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6. Time span for plastic bottles degradation is_____________.
a. 1-10years
b. 10-30years
c. Forever
d. 10-20years
Correct Answer: c
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7. organochlorine-DDT and tetrachlorovinphos are degraded by which one of the following microbial specie
a. Stenotrophomonas malthophilia
b. Proteus vulgaris
c. Pseudomonas aeruginosa
d. Serratia ficaria
Correct Answer: a
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8. Conjugation is a phase II reaction which takes part in the formation of________.
a. Secondary metabolite
b. Felbamate
c. Cytochrome P-450
d. Fumarate
Correct Answer: a
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9. Which substances appear to be non-degradable under all of circumstances
a. Plastic bottles
b. Plastic bags and plastic bottles
c. Synthetic polymers
d. Plastic bags
Correct Answer: b
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10. Soil bacteria that are responsible for PCBs breakdown, involves in PCBs breakdown through ____ Pathways.
a. Trioxygenases
b. Polyoxygenases
c. Dioxgenases
d. Monoxygenases
Correct Answer: c
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11. Tranquilizer after hydroxylation changes into?
a. Mercapturic acid
b. Mercapturate
c. Hydroxy meprobamate
d. Hydroxy deprobamate
Correct Answer: c
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12. Which conventional method gives 100% extraction?
a. supercritical fluid extraction
b. solvent extraction
c. oil expeller
d. enzymatic extraction
Correct Answer: a
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13. ___________company is found in New Zealand.
a. Pesticides formation company
b. Petroleum distillation
c. Oil expeller
d. Aquaflow Bionomics
Correct Answer: d
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14. The combination of biofilters and bio scrubbers in which cultured media takes part in decomposition and immobilization of substances is called as_____________.
a. Biocomposter
b. Biostimulator
c. Biotricklinkg filters
d. Bioreactors
Correct Answer: c
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15. Biological reactors and gas scrubbers are components of.
a. Biocomposter
b. Biostimulator
c. Bioscrubbers
d. Bioreactors
Correct Answer: c
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16. Chelating agents, microbes and plant hormones are used in__________ mode of phytoextraction
a. Chelator
b. Natural
c. Phytoextraction
d. Assisted
Correct Answer: d
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17. Cadmium and zinc detoxifying plants are_______.
a. willow trees
b. Roseacea
c. Ferns
d. Lichens
Correct Answer: a
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18. Plants roots spread to deep part of soil and reach to ground water and perform_______.
a. None of these
b. Rhizofiltration
c. Phytoextraction
d. Phytostabilization
Correct Answer: b
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19. In phytoremediation process plant shoot is harvested to recover
a. Nutreints
b. Metals
c. Plant hormones
d. Plant extract
Correct Answer: b
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20. Skimming process is a process that is applied during the processing of wastewater.
a. Tertiary treatment stage
b. Preliminary treatment stage
c. Primary treatment stage
d. Secondary treatment stage
Correct Answer: b
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21. Which one of the following treatment processes is required degrade nutrients in high rate by using other means?
a. Tertiary treatment stage
b. Preliminary treatment stage
c. Primary treatment stage
d. Secondary treatment stage
Correct Answer: b
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22. Depth of primary clarifiers ranges from
a. 3-5cm
b. 3-5mm
c. 3-5nm
d. 3-5m
Correct Answer: d
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23. The oils and cyclohexanes are separated by
a. Extraction
b. Rhizofiltration
c. Distillation
d. Fractional distillation
Correct Answer: c
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24. Conversion of Ammonia into nitrite is done by
a. P. ariugunosa
b. Nitosomines
c. P. lactobacillus
d. Nitrobacter
Correct Answer: b
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25. During the process of bioremediation appropriate temperature for microbial growth ranges from______.
a. 10-20C
b. 20-30C
c. 0-10C
d. 0-40C
Correct Answer: d
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26. Land treatment and piles are considered under
a. Solid phase system
b. In situ Bioremediation
c. Ex-situ Bioremediation
d. Slurry phase system
Correct Answer: a
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27. Prior to degradation of many organic compounds a non-evident time interval is noted in which no destruction is occurred called as_____.
a. Degradation
b. Biodegradation
c. Bioremediation
d. Acclimation
Correct Answer: d
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28. Time span for plastic bags degradation is_____________.
a. 1-10years
b. 5-10years
c. 10-30years
d. 10-20years
Correct Answer: d
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29. Petroleum hydrocarbons are degraded by which one of the following microbial specie
a. Serratia ficaria
b. Pseudomonas aeruginosa
c. Stenotrophomonas malthophilia
d. Proteus vulgaris
Correct Answer: b
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30. Dichloronitrobenzene after conjugation with Glutathione formed___________.
a. Mercapturic acid and urine
b. Mercapturic acid
c. Urine
d. Glutathione S-transferase
Correct Answer: b
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31. The “Aquaflow Bionomics” company is found in
a. China
b. New Zealand
c. Turkey
d. Pakistan
Correct Answer: b
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32. Components of bioscrubbers are.
a. Bioreactors
b. Gas scrubbers
c. Biofilters
d. Bioreactors and Gas scrubbers
Correct Answer: d
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33. Arsenic detoxifying plants are
a. Roseacea
b. None of these
c. Ferns
d. Willow trees
Correct Answer: c
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34. Plants are used to address the ground water rather than soil.
a. Willow trees
b. Rhizofiltration
c. Hydrangease
d. Ferns
Correct Answer: b
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35. Which one of the following treatment processes is not completed without microorganisms but required biodegradation in high rate?
a. Secondary metabolite
b. Primary treatment stage
c. Preliminary treatment stage
d. Tertiary treatment stage
Correct Answer: a
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36. Conversion of nitrate into nitrogen gas is done by
a. P. vulgarius
b. P. lactobacillus
c. P. ariugunosa
d. Nitrosomonas
Correct Answer: b
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37. Phytoremediation uses_________to binds, extract and clean up pollutants.
a. Fungi
b. Plants
c. Pesticides
d. Bacteria
Correct Answer: b
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38. Uptake of contaminants also accelerate by use of_________.
a. Filtration
b. Phytostabilizer
c. Hyperaccumulation
d. Accumulator
Correct Answer: c
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39. Xenobiotics is a _______________ compound.
a. Stable
b. Highly reactive
c. Less reactive
d. All of these
Correct Answer: a
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40. Picric acid reduced to form________ compound.
a. mercupric acid
b. Picramic acid
c. Picric oxice
d. Picric felbamate
Correct Answer: b
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41. Oxidation of alcohols comes from
a. Amino acid
b. Organic acids
c. Ethanol and acetic acid
d. Methanol and formic acid
Correct Answer: c
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42. Drugs are detoxified by the process called
a. Oxidation
b. None of these
c. Hydrolysis
d. Reduction
Correct Answer: c
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43. Which of the following compounds is detoxified by glucuronidation reactions?
a. Methanol and formic acid
b. Aspirin
c. Phenobarbitol
d. Billirubin
Correct Answer: d
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44. Which of the following enzymes involved in glucoronidation reactions ?
a. UOP –G pyro phosphorylation
b. UDP-dehydrogenase
c. Glucoronidase
d. Glucan transferase
Correct Answer: a
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45. Cell wall of________ algae contains fucoidin and alginic acid
a. Green
b. Blue
c. Brown
d. Red
Correct Answer: c
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46. Biosorption is one of the___________ processes
a. Hydrolase
b. Reversible
c. irreversible
d. Conjugate
Correct Answer: b
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47. Methods of obtaining metals from their ores by using microorganisms is called as_________.
a. Bioremediation
b. Bio processing
c. Bioformation
d. Biohydrometllurgy
Correct Answer: d
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48. In_______ the first industrial copper heap leaching method is done
a. 1947
b. 1950
c. 1958
d. 1960
Correct Answer: d
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49. Mesophiles bacteria are active at the temperature?
a. 30-38
b. 30-34
c. 50-70
d. 30-42
Correct Answer: d
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50. Bacteria perform key reactions of regenration in their___________________.
a. Nucleus
b. Ribosomes
c. Cell wall
d. Cytoplasm
Correct Answer: c
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