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. |
Which long term disease is caused by polluted water in human? |
| A. | Tuberculosis |
| B. | Fever |
| C. | Cancer |
| D. | Sickness and Diahoea |
| Answer» D. Sickness and Diahoea | |
| 2. |
Waste water usually disposed in |
| A. | water bodies |
| B. | Underground |
| C. | Forests |
| D. | Wells |
| Answer» B. Underground | |
| 3. |
Which countries, can not afford sewage treatment plant? |
| A. | Developed countries |
| B. | Under developed countries |
| C. | Developing countries |
| D. | Progressive countries |
| Answer» D. Progressive countries | |
| 4. |
What does help in reaeration from atmosphere? |
| A. | Turbidity |
| B. | Sunlight |
| C. | Oxygen |
| D. | Carbon dioxide |
| Answer» B. Sunlight | |
| 5. |
Larger amount of dissolved oxygen in water, faster will be the |
| A. | Turbidity |
| B. | reaeration |
| C. | Self Purification |
| D. | Currents |
| Answer» D. Currents | |
| 6. |
The carrier breeds in water and spreads disease by biting its victims is known as |
| A. | Water Based |
| B. | Water Borne |
| C. | Water Bred |
| D. | All of these |
| Answer» D. All of these | |
| 7. |
Most animals and plants can grow with pH, between |
| A. | 4 and 9 |
| B. | 5 and 9 |
| C. | 6 and 9 |
| D. | 7 and 9 |
| Answer» C. 6 and 9 | |
| 8. |
Radionuclide enters human body through dust and |
| A. | Food |
| B. | Aerosols |
| C. | Drinks |
| D. | Pores |
| Answer» C. Drinks | |
| 9. |
Rise of nutrient in water is known as |
| A. | Eutrophication |
| B. | Decomposition |
| C. | Biodegradation |
| D. | All of above |
| Answer» B. Decomposition | |
| 10. |
'turbidity' can be measured through |
| A. | Turbid meter |
| B. | Turbid |
| C. | Thermometer |
| D. | Barometer |
| Answer» B. Turbid | |
| 11. |
'COD' test is carried out to determine pollutional strength of |
| A. | Sewage |
| B. | water |
| C. | Fresh water |
| D. | Marine Water |
| Answer» B. water | |
| 12. |
Diseases are not only costly in terms of treatment but also in terms of |
| A. | Time |
| B. | Work ability |
| C. | Time and wok ability |
| D. | Poor diet |
| Answer» D. Poor diet | |
| 13. |
What does water pollution affect ? |
| A. | Dairies |
| B. | Kills organisms |
| C. | Water softening plants |
| D. | Wool |
| Answer» B. Kills organisms | |
| 14. |
What causes erosion of concrete degradation? |
| A. | Bacterial corrosion |
| B. | Viral corrosion |
| C. | Biological damage |
| D. | All of above |
| Answer» B. Viral corrosion | |
| 15. |
Coral reefs are known as the |
| A. | Biodiversity |
| B. | Marine Life |
| C. | Rainforests of the Sea |
| D. | Ecosystem |
| Answer» D. Ecosystem | |
| 16. |
Where the extra amount of nitrates and phosphorus moves, when the plants no longer absorb it? |
| A. | Percolates underground |
| B. | In the cultivated area |
| C. | Both a and b |
| D. | none |
| Answer» B. In the cultivated area | |
| 17. |
Man-made radiations include: |
| A. | Nuclear weapons |
| B. | X-rays |
| C. | Nuclear power plants and cancer treatment |
| D. | All of above |
| Answer» E. | |
| 18. |
How much BOD reduces in preliminary treatment ? |
| A. | 15 to 30% |
| B. | 17 to 60% |
| C. | 19 to 80% |
| D. | 10 to 90% |
| Answer» B. 17 to 60% | |
| 19. |
In which process, due to the increase of nutrients in the water, leads to the formation of algal bloom? |
| A. | Eutrophication |
| B. | Infiltration |
| C. | Percolation |
| D. | Subduction |
| Answer» B. Infiltration | |
| 20. |
What are hazardous traits ? |
| A. | Ignitability |
| B. | Corrosivity |
| C. | Toxicity |
| D. | All of above |
| Answer» E. | |
| 21. |
Cholera is mainly caused by poor |
| A. | Environmental problems |
| B. | Sanitation |
| C. | Water issues |
| D. | All of these |
| Answer» C. Water issues | |
| 22. |
Which organization should take lead role in cooperation between governments? |
| A. | United Nations |
| B. | UNESCO |
| C. | World Bank |
| D. | All of these |
| Answer» B. UNESCO | |
| 23. |
Which microorganism is responsible for cholera, typhoid, dysentery? |
| A. | Bacteria |
| B. | Virus |
| C. | Fungi |
| D. | Protozoa |
| Answer» B. Virus | |
| 24. |
Toxicity of chemical pollutant in water increases, with increase in |
| A. | Waste |
| B. | Water |
| C. | Temperature |
| D. | Air |
| Answer» D. Air | |
| 25. |
Main sources of nitrogen compounds in waste water are proteins, amines, and |
| A. | Urea |
| B. | Fats |
| C. | Calcium |
| D. | Phosphorous |
| Answer» B. Fats | |
| 26. |
End product of 'aerobic' decomposition are: |
| A. | Unstable |
| B. | stable |
| C. | reactive |
| D. | Non Combustible |
| Answer» C. reactive | |
| 27. |
What are the sources of nutrients in the marine pollution? |
| A. | sewage |
| B. | farming |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 28. |
Sewage obtained from domestic premises as well as commercial and industrial buildings, known as |
| A. | Municipal Pollution |
| B. | Industrial Pollution |
| C. | Natural pollution |
| D. | Mining Pollution |
| Answer» B. Industrial Pollution | |
| 29. |
'SOCs' stands for |
| A. | Systematic organic chemicals |
| B. | Synthetic organic chemicals |
| C. | Sematic organic chemicals |
| D. | Subjective organic chemicals |
| Answer» C. Sematic organic chemicals | |
| 30. |
Primary treatment reduces BOD, ranges from |
| A. | 30-60% |
| B. | 0-70% |
| C. | 30-35% |
| D. | 20-80% |
| Answer» D. 20-80% | |
| 31. |
Marine pollution is a |
| A. | National Problem |
| B. | Local problem |
| C. | Global Problem |
| D. | Regional Problem |
| Answer» D. Regional Problem | |
| 32. |
Which organisms are affected by eutrophications? |
| A. | Fishes |
| B. | Plants |
| C. | Bees and Butterflies |
| D. | Flora |
| Answer» B. Plants | |
| 33. |
What affects velocity and surface expansion of river? |
| A. | Dissolved Oxygen |
| B. | Turbidity |
| C. | Currents |
| D. | Hydrography |
| Answer» E. | |
| 34. |
What are coral reefs? |
| A. | Natural living structures |
| B. | Artifical Structures |
| C. | Animals Only |
| D. | Plants Only |
| Answer» B. Artifical Structures | |
| 35. |
Cholera cause severe diarrhea, which leads to dehydration and eventually |
| A. | Death |
| B. | Cancer |
| C. | Kidney Failure |
| D. | Skin Disease |
| Answer» B. Cancer | |
| 36. |
What is the process used to cover all water losses from land surfaces? |
| A. | evaporation |
| B. | hydration |
| C. | Evapo-transpiration |
| D. | condensation |
| Answer» D. condensation | |
| 37. |
Which lake in sindh Pakistan has destroyed the flora and fauna, due to high salinity and high release of chemicals in the water |
| A. | Ataabad lake |
| B. | Banjosa Lake |
| C. | Saif ul Maluk Lake |
| D. | Manchar Lake |
| Answer» E. | |
| 38. |
How the radioactive waste impacts the marine life? |
| A. | Kills the Fishes |
| B. | transferred to humans through food chain |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 39. |
Heavier suspended solids settle down, at point of outfall of waste water, known as: |
| A. | Suspended solids |
| B. | Sedimentation |
| C. | Dispersion |
| D. | Degradation |
| Answer» C. Dispersion | |
| 40. |
Addition of hydrogen and removal of oxygen, known as |
| A. | Reduction |
| B. | Oxidation |
| C. | Suspended solids |
| D. | Dispersion |
| Answer» B. Oxidation | |
| 41. |
What are the sauces of oil in marine environment? |
| A. | Transport heavy machinery |
| B. | Oil tankers |
| C. | Off shore oil Industries |
| D. | All of these |
| Answer» E. | |
| 42. |
Presences of impurities in water is known as |
| A. | Air pollution |
| B. | Water Pollution |
| C. | Waste pollution |
| D. | Atmospheric Pollution |
| Answer» C. Waste pollution | |
| 43. |
What are secreted by coral reefs? |
| A. | Sodium Carbonates |
| B. | Calcium carbonates |
| C. | Potassium carbonates |
| D. | Sulphur Carbonates |
| Answer» C. Potassium carbonates | |
| 44. |
In secondary treatment, decomposition of organic matters is carried out by |
| A. | Aerobic bacteria |
| B. | Anaerobic Bacteria |
| C. | Fungi |
| D. | Algae |
| Answer» B. Anaerobic Bacteria | |
| 45. |
Radioactive contamination also known as: |
| A. | Radiological anatomy |
| B. | Radiological contamination |
| C. | Radiological imagining |
| D. | Radiological assistant |
| Answer» C. Radiological imagining | |
| 46. |
What does sewage consist of ? |
| A. | Fuel waste |
| B. | Faeces |
| C. | Paper waste |
| D. | Nutrient |
| Answer» C. Paper waste | |
| 47. |
In summers, decomposition proceeds faster than in |
| A. | Spring |
| B. | Winter |
| C. | Autumn |
| D. | Hot weather |
| Answer» C. Autumn | |
| 48. |
Suspended solids and sediments increases turbidity of |
| A. | Air |
| B. | Water |
| C. | Radioactive radiations |
| D. | Sunlight |
| Answer» C. Radioactive radiations | |
| 49. |
'Nitrogen' is an essential constituents of |
| A. | Amino Acid |
| B. | Protein |
| C. | Phosphorous |
| D. | Calcium |
| Answer» C. Phosphorous | |
| 50. |
Tertiary treatment of sewage is also known as |
| A. | Advance Treatment |
| B. | Preliminary Treatment |
| C. | Secondary Treatment |
| D. | Primary Treatment |
| Answer» B. Preliminary Treatment | |