MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
PAHs, PCBs and PBBs are |
| A. | Natural |
| B. | manmade |
| C. | Found in plants |
| D. | Produced by Animals |
| Answer» C. Found in plants | |
| 2. |
Very light oil is supposed to evaporate within |
| A. | 1 to 2 days |
| B. | 1 to 3days |
| C. | 1 to 9days |
| D. | 1 to 5days |
| Answer» B. 1 to 3days | |
| 3. |
In sea, oil attacking mucosa of gastrointestinal system of fish, resulting in |
| A. | Blockage of gills |
| B. | Respiration problems |
| C. | Digestion of food |
| D. | Ulcer and diarrhea |
| Answer» E. | |
| 4. |
Dioxins are produced in the |
| A. | Commercial Areas |
| B. | Houses |
| C. | Metal industry |
| D. | All of above |
| Answer» D. All of above | |
| 5. |
Well recognized higher molecular weight PAHs are, regarded as |
| A. | Hydrophiliic |
| B. | Hydrophobic |
| C. | Inorganic |
| D. | organic compounds |
| Answer» C. Inorganic | |
| 6. |
In sea, dissovled mercury ions are easily absorbed in |
| A. | Plants |
| B. | Sediments |
| C. | Animals |
| D. | Fats |
| Answer» C. Animals | |
| 7. |
Accumulation of GHGs in atmosphere, may causes |
| A. | Acid rain |
| B. | Global Warming |
| C. | Desertification |
| D. | Eutrophication |
| Answer» C. Desertification | |
| 8. |
Nitrogen can be made available for organism by process of |
| A. | Detoxication |
| B. | Amonification |
| C. | Nitrogen Fixation |
| D. | Degradation |
| Answer» D. Degradation | |
| 9. |
Scientific usage, working on detection of fishes, estimation of biomass and |
| A. | heat waves |
| B. | measurement of wind |
| C. | measurement of soil |
| D. | assessment of the ocean bottom |
| Answer» E. | |
| 10. |
In biological pump, newly formed organic material is transported to the |
| A. | Upper zones |
| B. | Lower zones |
| C. | Middle zones |
| D. | final zones |
| Answer» C. Middle zones | |
| 11. |
EPA stands for |
| A. | Environmental Prevention Agency |
| B. | Environmental Protection Agenda |
| C. | Ecological Protection Agency |
| D. | Environmental Protection Agency |
| Answer» E. | |
| 12. |
aromatic hydrocarbons are also known as |
| A. | Asphalt |
| B. | Carcinogens |
| C. | Parafines |
| D. | All of them |
| Answer» C. Parafines | |
| 13. |
Noise pollution effects marine animals |
| A. | blood circulation |
| B. | gene pool |
| C. | DNA transposition |
| D. | behaviour |
| Answer» E. | |
| 14. |
If plastic enters food chain, causing bioaccumuation of |
| A. | toxic compounds |
| B. | chemical compounds |
| C. | Sledges |
| D. | organic compounds |
| Answer» B. chemical compounds | |
| 15. |
Some fishes are attracted to oil, enhancing impact, seems like |
| A. | Phytoplankton |
| B. | Floating Food |
| C. | Stone |
| D. | stars |
| Answer» C. Stone | |
| 16. |
According to estimated figure, a tinned steel would take 50 years to |
| A. | form |
| B. | grow |
| C. | decompose |
| D. | develop |
| Answer» D. develop | |
| 17. |
Book silent spring was written by |
| A. | Darwin |
| B. | Rachel Carson |
| C. | Einstein |
| D. | Jabir bin Ayan |
| Answer» C. Einstein | |
| 18. |
Sonar is used to locate and assess fish shoals, in order to |
| A. | Produce |
| B. | form |
| C. | Manufacture |
| D. | Capture |
| Answer» E. | |
| 19. |
SRB stands for |
| A. | Sulphur reducing bacteria |
| B. | sulfate-reducing bacteria |
| C. | Salt reducing bacteria |
| D. | Silt reducing bacteria |
| Answer» C. Salt reducing bacteria | |
| 20. |
Examples of alkane molecules are saturated hydrocarbons and |
| A. | Jet fuel |
| B. | Karosene |
| C. | Parafines |
| D. | Hydrocarbons |
| Answer» D. Hydrocarbons | |
| 21. |
Rachel Carson was an eminent American |
| A. | Ecologist |
| B. | Biologist |
| C. | Scientist |
| D. | Philosopher |
| Answer» B. Biologist | |
| 22. |
Degradation of substance in an environment is called |
| A. | Persistence |
| B. | Bioavailability |
| C. | Bioventing |
| D. | Degradation |
| Answer» B. Bioavailability | |
| 23. |
Who has been investigated change in RNA? |
| A. | Microarray |
| B. | Degradation |
| C. | Biodegradation |
| D. | Bioventing |
| Answer» B. Degradation | |
| 24. |
Source levels for fish tracking ranges between |
| A. | 150 and 235 dB |
| B. | 2250 and 5235 dB |
| C. | 50 and 235 dB |
| D. | 150 and 2935 dB |
| Answer» B. 2250 and 5235 dB | |
| 25. |
According to a general survey, a milk cartons takes 5 years to |
| A. | decompose |
| B. | recycle |
| C. | Manufacture |
| D. | stay fresh |
| Answer» B. recycle | |
| 26. |
Paper tower, approximately, takes 2 to 4 weeks to |
| A. | Produced |
| B. | decompose |
| C. | Form |
| D. | activate |
| Answer» C. Form | |
| 27. |
PCBs are widely used in |
| A. | Aero planes |
| B. | Building materials |
| C. | Electrical equipments |
| D. | Industries |
| Answer» D. Industries | |
| 28. |
Ships engine produces CO₂, SO₂ and |
| A. | Paper waste |
| B. | Plastics |
| C. | NO₂ |
| D. | carbon |
| Answer» D. carbon | |
| 29. |
Very light oil components are |
| A. | Chemical compounds |
| B. | Non toxic compounds |
| C. | Toxic |
| D. | Inorganic |
| Answer» D. Inorganic | |
| 30. |
Monofilament Fishing Line takes 600 years to |
| A. | grow |
| B. | decompose |
| C. | rotten |
| D. | form |
| Answer» C. rotten | |
| 31. |
In nature, mercury is found in different forms, such as elemental, metallic and |
| A. | Organic mercury compound |
| B. | Inorganic mercury compound |
| C. | Toxic compound |
| D. | non-toxic compound |
| Answer» C. Toxic compound | |
| 32. |
fire booms are made up of |
| A. | Non Metals |
| B. | Metals |
| C. | Waste material |
| D. | Organic molecules |
| Answer» C. Waste material | |
| 33. |
Petroleum mainly consists of hydrogen and |
| A. | Carbon compounds |
| B. | Phosphate compounds |
| C. | Sulphur compounds |
| D. | Nitrogen gas |
| Answer» B. Phosphate compounds | |
| 34. |
Nitrosomonas sp, converts ammonia into |
| A. | Nitrates |
| B. | Nitrogen gas |
| C. | nitrite |
| D. | chemicals |
| Answer» D. chemicals | |
| 35. |
In rats, an estimated oral dosage, ranges between 50 to 500 mg/kg, termed as |
| A. | Highly Toxic |
| B. | Slightly Toxic |
| C. | Moderately Toxic |
| D. | Super Toxic |
| Answer» D. Super Toxic | |
| 36. |
Dugongs, more likely affected by oil spills, due to reason of feeding on sea grass along |
| A. | The forests |
| B. | The mountains |
| C. | The hills |
| D. | The coast |
| Answer» E. | |
| 37. |
Petroleum is a mixture of thousands of |
| A. | Gases |
| B. | Inorganic compounds |
| C. | Oil components |
| D. | Chemical compounds |
| Answer» E. | |
| 38. |
Rivers are recognized as another way, metals ending up in the |
| A. | Oceans |
| B. | Ponds |
| C. | Lakes |
| D. | Streams |
| Answer» B. Ponds | |
| 39. |
Polycyclic aromatic hydrocarbons are capable to accumulate in |
| A. | Waste water |
| B. | Plastics |
| C. | Organisms and sediments |
| D. | Plants |
| Answer» D. Plants | |
| 40. |
Coal tar creosote is a thick, oily liquid, and |
| A. | green color |
| B. | Blue color |
| C. | Blank in Color |
| D. | White color |
| Answer» D. White color | |
| 41. |
In 1996, a Comprehensive Test Ban Treaty was signed by all countries, aiming at stoppng |
| A. | nuclear testing |
| B. | fishing |
| C. | researches |
| D. | pollution |
| Answer» B. fishing | |
| 42. |
Amplitude of wave, measuring amount of energy, related to the |
| A. | amount of energy utilized |
| B. | amount of energy realized |
| C. | amount of energy carried |
| D. | amount of energy absorbed |
| Answer» D. amount of energy absorbed | |
| 43. |
Helogenated hydrocarbons consists of hydrocarbon chains, having |
| A. | Oxygen atom |
| B. | halogen atom |
| C. | Metals |
| D. | organic compounds |
| Answer» C. Metals | |
| 44. |
According to estimates, leather shoes are suppose to be taken 40 years, in |
| A. | Manufacturing |
| B. | decomposing |
| C. | damaging shape |
| D. | changing form |
| Answer» C. damaging shape | |
| 45. |
SFG stands for |
| A. | Slope for growth |
| B. | scope for growth development |
| C. | system for growth |
| D. | All of above |
| Answer» E. | |
| 46. |
Iron is engrossed as a central ion, accessing in |
| A. | blood nerves |
| B. | Hemoglobin |
| C. | Plasma membrane |
| D. | ovaries |
| Answer» C. Plasma membrane | |
| 47. |
Humans are more sensitive to toxicity than |
| A. | Animals |
| B. | Insects |
| C. | Plants |
| D. | Fishes |
| Answer» B. Insects | |
| 48. |
Carbonic acid dissociates into protons and |
| A. | Neutron |
| B. | Anions |
| C. | Carbonate ions |
| D. | Cations |
| Answer» D. Cations | |
| 49. |
In DNA modification, metals shows strong binding to the |
| A. | Organs |
| B. | Cell membrane |
| C. | Carbon groups |
| D. | Phosphate groups |
| Answer» E. | |
| 50. |
Nitrogen is needed for synthesis of nucleotides and |
| A. | Vitamins |
| B. | Carbohydrates |
| C. | Fats |
| D. | Amino Acids |
| Answer» E. | |