MCQOPTIONS
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MCQOPTIONS
This section includes 272 Mcqs, each offering curated multiple-choice questions to sharpen your Environment Management knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why thermal pollution causing the release of hot water by power plants is dangerous? |
| A. | They increase the solubility of oxygen |
| B. | They decrease the solubility of oxygen |
| C. | They don’t dissolve oxygen |
| D. | They dissolve nitrogen |
| Answer» C. They don’t dissolve oxygen | |
| 2. |
What is the main reason for thermal pollution? |
| A. | Increase in the temperature of the ecosystem |
| B. | Increase in the chemical contains in water |
| C. | Hot water released by power plants and industries |
| D. | Pollution causing by vehicles |
| Answer» D. Pollution causing by vehicles | |
| 3. |
Where we can find water soluble radioactive isotopes? |
| A. | In radioactive reactor |
| B. | In radioactive coolant |
| C. | In radioactive shield |
| D. | In radioactive waste |
| Answer» E. | |
| 4. |
What are the sources of toxic wastes in marine life? |
| A. | Metals from mining |
| B. | Industries |
| C. | Pesticides from farms |
| D. | All of these |
| Answer» E. | |
| 5. |
When water is evaporated from plants is called? |
| A. | Evapo-transpiration |
| B. | condensation |
| C. | Transpiration |
| D. | hydration |
| Answer» D. hydration | |
| 6. |
Primary treatment reduces solids, ranges from |
| A. | 20-60% |
| B. | 10-50% |
| C. | 20-70% |
| D. | 40-60% |
| Answer» E. | |
| 7. |
Chlorophenols are toxic to bacteria and |
| A. | Fish |
| B. | Birds |
| C. | Tigers |
| D. | Insects |
| Answer» B. Birds | |
| 8. |
Which treatment is usually accomplished by sedimentation? |
| A. | Secondary Treatment |
| B. | Preliminary Treatment |
| C. | Primary Treatment |
| D. | Tertiary Treatment |
| Answer» D. Tertiary Treatment | |
| 9. |
Fats, greases and oils are soluble in |
| A. | Ether |
| B. | Parafins |
| C. | CO |
| D. | NOX |
| Answer» B. Parafins | |
| 10. |
In cold climate, warm water can be harmful to temperature sensitive organism for example |
| A. | Trout and Salmon |
| B. | Whales |
| C. | Dolphins |
| D. | Sharks |
| Answer» B. Whales | |
| 11. |
Rate of oxidation depends on amount of: |
| A. | Inorganic matters |
| B. | Organic matters |
| C. | Nutrients |
| D. | Water |
| Answer» C. Nutrients | |
| 12. |
Sources which can be readily identified at a single location is known as |
| A. | Point Source |
| B. | Diffused Source |
| C. | Stationary Source |
| D. | Natural source |
| Answer» B. Diffused Source | |
| 13. |
What is main anthropogenic activity that causes radioactive materials? |
| A. | Deforestation |
| B. | Power plants and Nuclear weapons |
| C. | Industrial Pollution |
| D. | Solar Power |
| Answer» C. Industrial Pollution | |
| 14. |
What are the example of water borne disease? |
| A. | Typhoid |
| B. | Dysentery |
| C. | Diarrhea |
| D. | All of these |
| Answer» E. | |
| 15. |
Outer Hall of the tanker provides a |
| A. | Non Protective Layer |
| B. | Protective layer |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 16. |
Which fatal disease is caused by mosquito bites? |
| A. | Malaria |
| B. | Dysentery |
| C. | Dengue |
| D. | diarrhea |
| Answer» D. diarrhea | |
| 17. |
What are the most common metals found in industrial processing? |
| A. | Mercury, Lead and Copper |
| B. | Manganese, Nickel, and Arsenic |
| C. | Both a and b |
| D. | Toxic industrial waste |
| Answer» D. Toxic industrial waste | |
| 18. |
Which parts of the oceans are polluted? |
| A. | Coastal Areas |
| B. | Deeper part of the Ocean |
| C. | Surface Areas |
| D. | Fishing Areas |
| Answer» B. Deeper part of the Ocean | |
| 19. |
What percentage of earth consist of oceans and seas? |
| A. | 97% |
| B. | 51% |
| C. | 71% |
| D. | 70% |
| Answer» B. 51% | |
| 20. |
In which country large areas has been cleared to plant bananas by campanies? |
| A. | America |
| B. | Europe |
| C. | Africa |
| D. | Asia |
| Answer» B. Europe | |
| 21. |
Heated water has a harmful effects on |
| A. | Marine life |
| B. | Land animals |
| C. | Birds |
| D. | Seashore birds |
| Answer» B. Land animals | |
| 22. |
How nutrients impacts the marine population? |
| A. | Increase the amount of Algae |
| B. | Lower oxygen |
| C. | Kills the marine life |
| D. | All of these |
| Answer» E. | |
| 23. |
Primary treatment is carried out for removal of large |
| A. | Particles |
| B. | Sedimentation |
| C. | Floating materials |
| D. | Suspended solids |
| Answer» B. Sedimentation | |
| 24. |
The young and elders are mostly at risk of |
| A. | Cholera |
| B. | Sleeping sickness |
| C. | Malaria |
| D. | Fever |
| Answer» D. Fever | |
| 25. |
What percentage of earth contains fresh water? |
| A. | 2% |
| B. | 3% |
| C. | 1% |
| D. | 5% |
| Answer» C. 1% | |
| 26. |
The impacts of some pollutants in the marine environment is |
| A. | immediate and easy to observe |
| B. | Prolong |
| C. | Acute |
| D. | All of these |
| Answer» B. Prolong | |
| 27. |
A radiation dose can cause: |
| A. | Nausea and vomiting |
| B. | Heart disease |
| C. | Arthritis |
| D. | All of above |
| Answer» B. Heart disease | |
| 28. |
Which parameter is very important in sewage treatment? |
| A. | Temperature |
| B. | Chemical |
| C. | Decomposition |
| D. | All of them |
| Answer» B. Chemical | |
| 29. |
Malaria kills more than 1 million people per |
| A. | Year |
| B. | Day |
| C. | Month |
| D. | Annum |
| Answer» B. Day | |
| 30. |
Secondary treatment reduces BOD, ranges from |
| A. | 20-50% |
| B. | 40-70% |
| C. | 70-80% |
| D. | 70-95% |
| Answer» E. | |
| 31. |
For human health, the metals of great concerns are |
| A. | Lead, mercury, Arsenic and Cadmium |
| B. | Lead and Mercury |
| C. | Only Cadmium |
| D. | None of these |
| Answer» B. Lead and Mercury | |
| 32. |
Greater rate of aeration, faster will be the |
| A. | Self purification |
| B. | Turbidity |
| C. | Currents |
| D. | Hydrography |
| Answer» B. Turbidity | |
| 33. |
What is most common dissolved gas in water? |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Oxygen |
| D. | Nitrogen |
| Answer» E. | |
| 34. |
The balharzia snail larvae enters the human body through |
| A. | Mouth |
| B. | Body |
| C. | Sole of the feet |
| D. | Anus |
| Answer» D. Anus | |
| 35. |
'Oil' is a mixture of different |
| A. | Parafins |
| B. | Hydrocarbons |
| C. | Nutrients |
| D. | Gases |
| Answer» C. Nutrients | |
| 36. |
Which countries are insisting that the oil tanker's hall should be doubled, for reducing the spillage of oil? |
| A. | USA and EU |
| B. | USA and Canada |
| C. | Canada |
| D. | Africa |
| Answer» B. USA and Canada | |
| 37. |
Coral reefs are a source of |
| A. | Medicinal Compounds |
| B. | Source of water |
| C. | Source of Salts |
| D. | Minerals |
| Answer» B. Source of water | |
| 38. |
In tourism, migration loss is reduced because of |
| A. | facilities |
| B. | Jobs |
| C. | Natural Beauty of the country |
| D. | All of these |
| Answer» C. Natural Beauty of the country | |
| 39. |
What are the example of water based disease? |
| A. | Bilharzia |
| B. | Guinea |
| C. | Both a and b |
| D. | Cholera |
| Answer» D. Cholera | |
| 40. |
Why pesticides poisoning is too high in developing countries? |
| A. | Due to lack of instructions |
| B. | Use of faulty equipments |
| C. | Fewer safety regulations |
| D. | All of these |
| Answer» E. | |
| 41. |
What are environmental impact of tourism? |
| A. | Pollution |
| B. | Deforestation |
| C. | Extinction |
| D. | Endengered Species |
| Answer» B. Deforestation | |
| 42. |
Waste water contains algae, fungi, bacteria and |
| A. | Crocodiles |
| B. | Snakes |
| C. | Rotifers |
| D. | Tigers |
| Answer» D. Tigers | |
| 43. |
Floating materials in preliminary treatment includes: |
| A. | Chemicals |
| B. | Gases |
| C. | Liquids |
| D. | Dead animals |
| Answer» E. | |
| 44. |
Preliminary treatment reduces solids, ranges from |
| A. | 20-70% |
| B. | 20-40% |
| C. | 50-69% |
| D. | 20-90% |
| Answer» C. 50-69% | |
| 45. |
In extreme cases of eutrophication, the water bodies no longer support |
| A. | Pollution |
| B. | Fishes |
| C. | Nutrients |
| D. | Algae |
| Answer» C. Nutrients | |
| 46. |
In first stage of aerobic decomposition, carbonaceous matter is being |
| A. | Reduced |
| B. | Oxidized |
| C. | Formed |
| D. | Decomposed |
| Answer» C. Formed | |
| 47. |
Natural vegetation is cleared for the construction of |
| A. | Resorts |
| B. | Pavements |
| C. | Waste dumping areas |
| D. | All of these |
| Answer» B. Pavements | |
| 48. |
Which two nutrients speed up the natural process of eutrophication? |
| A. | Nitrates and Phosphates |
| B. | Nitrates and Calcium |
| C. | Phosphorous and Lead |
| D. | All of these |
| Answer» B. Nitrates and Calcium | |
| 49. |
What are the sources of pathogenic organism on marine pollution? |
| A. | sewage |
| B. | Livestock Waste |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 50. |
How oil discharge in the marine environment impacts the fishes and other organisms? |
| A. | Kills the Fishes |
| B. | Cause diseases to the marine life |
| C. | Pollute the water |
| D. | All of these |
| Answer» E. | |