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. |
TLV stands for |
| A. | Temperature Limit Value |
| B. | Thresold Limit Value |
| C. | Temperature level Value |
| D. | Temperate zone |
| Answer» C. Temperature level Value | |
| 2. |
RfD stands for |
| A. | Real Dose |
| B. | Referred dose |
| C. | Reference Dose |
| D. | Replicated dose |
| Answer» D. Replicated dose | |
| 3. |
In an acute toxic class method, sequential testing procedure, as a specimen use |
| A. | 100 Animals |
| B. | 90 Animals |
| C. | 8 Animals |
| D. | 3 animal |
| Answer» E. | |
| 4. |
PCBs and PBBs are more prone to high levels of |
| A. | Heat |
| B. | base |
| C. | acid |
| D. | All of above |
| Answer» E. | |
| 5. |
Species found to have ingested plastic |
| A. | mammals |
| B. | birds |
| C. | fishes |
| D. | All of above |
| Answer» E. | |
| 6. |
What would be dose of 60 kg human? |
| A. | 100 mg |
| B. | 150 mg |
| C. | 60 mg |
| D. | 50 mg |
| Answer» C. 60 mg | |
| 7. |
Cyanobacteria lives as a symbionts in corals and sponges, making up the |
| A. | Phytoplanktons |
| B. | Coral Reefs |
| C. | Planktons |
| D. | Zooplanktons |
| Answer» C. Planktons | |
| 8. |
HCB stands for |
| A. | Halocarbon benzene |
| B. | Hydro carbon benzene |
| C. | Hexachlorobenzene |
| D. | Hydro banzene |
| Answer» D. Hydro banzene | |
| 9. |
Arsenic is capable of being occured in four different |
| A. | Compounds |
| B. | Ions |
| C. | Reduction State |
| D. | All of above |
| Answer» E. | |
| 10. |
Lead usually becomes grayish, after being exposed to |
| A. | Nutrients |
| B. | Chemicals |
| C. | Water |
| D. | All of above |
| Answer» E. | |
| 11. |
Firstly, an oil spill, spreading out over a large part of the |
| A. | Sea surface |
| B. | Deep ocean |
| C. | Land surface |
| D. | Earth Core |
| Answer» B. Deep ocean | |
| 12. |
Filter feeders, such as Mytilus edulis and Arenicola marina, follow through |
| A. | macro plastics |
| B. | micro plastic particles |
| C. | Waste material |
| D. | fossil fuels |
| Answer» C. Waste material | |
| 13. |
Polycyclic aromatic hydrocarbons are organic compounds, consisting of |
| A. | Fused aromatic rings |
| B. | One polymatic ring |
| C. | No ring |
| D. | several rings |
| Answer» B. One polymatic ring | |
| 14. |
Heavier oil component will deposit in bottom of |
| A. | Atmosphere |
| B. | Sea water |
| C. | Hills |
| D. | Lands |
| Answer» C. Hills | |
| 15. |
Examples of non point source pollutants, captivated as urban storm run off and |
| A. | Household waste |
| B. | Industrial effluents |
| C. | Sewage pipe line |
| D. | Agricultural run off |
| Answer» E. | |
| 16. |
In humans, an approximate, oral dosage of 15000 mg/kg, characterized as |
| A. | Very Toxic |
| B. | Super Toxic |
| C. | Slightly Toxic |
| D. | Very Slightly Toxin |
| Answer» E. | |
| 17. |
High concentration of nutrient in atmosphere promotes growth of |
| A. | Insects |
| B. | Rodents |
| C. | Viruses |
| D. | Algae |
| Answer» E. | |
| 18. |
A fundamental frequency of a sound, enduring a |
| A. | pitch |
| B. | substantial time |
| C. | a velocity of sound wave |
| D. | wavelength |
| Answer» C. a velocity of sound wave | |
| 19. |
Almost, 61% of oil incidents are caused by fires, explosions and |
| A. | equipment failures |
| B. | Natural disaster |
| C. | Acid rains |
| D. | Human Activities |
| Answer» B. Natural disaster | |
| 20. |
Cigarette butts takes 12 years to |
| A. | decompose |
| B. | rotten |
| C. | recycle |
| D. | grow |
| Answer» B. rotten | |
| 21. |
Lighter molecule embodied with |
| A. | Ethylene |
| B. | Methane butane |
| C. | Propyl |
| D. | Ethyl |
| Answer» C. Propyl | |
| 22. |
Toxicity of a substance is determined by the |
| A. | Dosage |
| B. | Amount of damage |
| C. | Lethality of a compound |
| D. | quality assurance |
| Answer» D. quality assurance | |
| 23. |
Military sonars, used in targeting |
| A. | localisation |
| B. | detection of biomass |
| C. | detection of fishes |
| D. | animals |
| Answer» B. detection of biomass | |
| 24. |
Group 4 oils, non persistent oil, having a specific gravity, ranges between |
| A. | 0.95 and 1.0 |
| B. | 0.95 and 2.0 |
| C. | 0.95 and 3.0 |
| D. | 0.95 and 8.0 |
| Answer» B. 0.95 and 2.0 | |
| 25. |
In humans, an approximate oral dosage, ranges between 500 to 5000 mg/kg, considered as |
| A. | Slightly Toxic |
| B. | Moderately Toxic |
| C. | Extremely Toxic |
| D. | Super Toxic |
| Answer» C. Extremely Toxic | |
| 26. |
In humans, an estimated oral dosage, ranging from 5000 to 15000 mg/kg, reckoned as |
| A. | Very Toxic |
| B. | Extremely Toxic |
| C. | Super toxic |
| D. | acidic |
| Answer» B. Extremely Toxic | |
| 27. |
Low frequency sonars are used for broad |
| A. | detection of biomass |
| B. | surveillance applications |
| C. | detection of fishes |
| D. | vessels |
| Answer» C. detection of fishes | |
| 28. |
Extent to which a pollutant exists in a form, accessible by living tissues, known as |
| A. | Bioventing |
| B. | Bioavailability |
| C. | Biodegradation |
| D. | Biodiversity |
| Answer» C. Biodegradation | |
| 29. |
Major parts of all pollutants, originated in |
| A. | Sea |
| B. | Oceans |
| C. | Lands |
| D. | Mountains |
| Answer» D. Mountains | |
| 30. |
Wool sock, approximately, takes 1 to 5 years to be as |
| A. | rotten |
| B. | formed |
| C. | decomposed |
| D. | grown |
| Answer» D. grown | |
| 31. |
Toxic additives used in plastic manufacturing, such as bisphenol A and |
| A. | Alkaline |
| B. | Alkanes |
| C. | phthalates |
| D. | Ethene |
| Answer» D. Ethene | |
| 32. |
Lighter elements, such as zinc and aluminum, effecting the |
| A. | Plants |
| B. | Coral Reefs |
| C. | Aquatic organisms |
| D. | Plants |
| Answer» D. Plants | |
| 33. |
IOPC stands for |
| A. | International Oil Pollution Compound Funds |
| B. | International Oil Pollution Compensation Funds |
| C. | International Oil Pollutant Compensation Funds |
| D. | International Oil Pollution Compensation Foundation |
| Answer» C. International Oil Pollutant Compensation Funds | |
| 34. |
First effect of oil pollution on animals is considered as |
| A. | Psychological |
| B. | Biological |
| C. | Physical |
| D. | Chemical |
| Answer» D. Chemical | |
| 35. |
Sum of bioconcentration and biomagnification is known as |
| A. | Biodegradation |
| B. | Bioavailability |
| C. | Bioaccumulation |
| D. | Bioventing |
| Answer» D. Bioventing | |
| 36. |
Microplaastics are found in stomach of gastropods and |
| A. | Rotifers |
| B. | insects |
| C. | lions |
| D. | fishes |
| Answer» E. | |
| 37. |
Gastropods and fishes prey on |
| A. | filter feeders |
| B. | Phytoplanktons |
| C. | Zooplanktons |
| D. | whales |
| Answer» B. Phytoplanktons | |
| 38. |
Group 5 oils of non persistent oil, having a specific gravity, greater than |
| A. | 9 |
| B. | 1 |
| C. | 2 |
| D. | 4 |
| Answer» C. 2 | |
| 39. |
Lead can be dramatically damaged neural pathways, causing |
| A. | Heart attacks |
| B. | Blood Poisoning |
| C. | Asthma |
| D. | TB |
| Answer» C. Asthma | |
| 40. |
Mercury can cross cell membrane and interfers in |
| A. | Cell metabolism |
| B. | Blood Circulation |
| C. | Respiration |
| D. | Digestion |
| Answer» B. Blood Circulation | |
| 41. |
Zinc helps as a Cofactor in many enzymes, such as carboxypeptidase and |
| A. | carbonic anhydrase |
| B. | ATPases |
| C. | Hormones |
| D. | Gastric lipase |
| Answer» B. ATPases | |
| 42. |
Life expentancy of PAHs are usually much shorter in |
| A. | Sea |
| B. | Oceans |
| C. | clear water |
| D. | rivers |
| Answer» D. rivers | |
| 43. |
Paracelsus stated that all chemical compounds are capable to harm |
| A. | Soil |
| B. | Human body |
| C. | Plastics |
| D. | environment |
| Answer» C. Plastics | |
| 44. |
Mercury-based fever thermometers are being banned in the |
| A. | UAE |
| B. | Uk |
| C. | US |
| D. | Asia |
| Answer» D. Asia | |
| 45. |
Nitrogen is an essential element for marine organism than |
| A. | Farm Animals |
| B. | Wild animals |
| C. | Terrestrial Organisms |
| D. | Mountain animals |
| Answer» D. Mountain animals | |
| 46. |
In humans, an oral dosage up to 5mg/kg, considerably |
| A. | Slightly Toxic |
| B. | Very Toxic |
| C. | Super toxic |
| D. | acidic |
| Answer» D. acidic | |
| 47. |
Different microbes are responsible for oxidation of ammonia, such as |
| A. | Insects and planktons |
| B. | Rodents |
| C. | Nitrospira, and Nitrosococcus |
| D. | Pest |
| Answer» D. Pest | |
| 48. |
Point source pollutants are |
| A. | Identifiable |
| B. | Not identifiable |
| C. | Scattered |
| D. | harmful |
| Answer» B. Not identifiable | |
| 49. |
Non point pollutants cannot be attributed to a specific |
| A. | Space |
| B. | Location |
| C. | Forests |
| D. | work |
| Answer» C. Forests | |
| 50. |
Primary sources of oil, included cars, heavy machinery and |
| A. | Waste water |
| B. | Oil Tankers |
| C. | Household product |
| D. | garbage |
| Answer» C. Household product | |