SSC Ecology and Environment Set- 6
Total Questions:- 50
Time:- 30 Minutes
TCS Pattern MCQs
Date:- 28/07/2026
2. Which type of water plants scientifically named as Eichhornia crassipes, have become the world's most problematic aquatic weed?
4. Biodegradable wastes can usually be converted into useful substance with the help of-
5. What is the pH of rain water during acid rain?
6. Which among the following helps in monitoring air pollution?
7. Fine solid particles or liquid droplets suspended in air are called ………
8. Iron and Manganese present as pollutants in water cannot be removed by ............
9. Which of the following gases emitted from automobile exhaust is poisonous?
10. Which of the following gases is produced due to incomplete combustion of fuel?
11. Automobile exhaust leads to a poisonous pollutant
12. Bio-magnification is well established for which of the following pollutants?
13. Which of the following is used as a bioindicator of air pollution?
14. During which of the following operating conditions of an automobile, carbon monoxide content in exhaust gas is maximum?
15. ...........percent of Delhites are suffering from Asthma and Rhinitis.
16. What is a good way to measure the population density of fishes found in lakes?
17. Sullage Water is------------
18. Acid rain is caused due to pollution of atmosphere by
19. The accumulation of non-degradable chemicals progressively at each trophic level is called.....
20. Which words combine to form 'smog', a form of air pollution?
21. With respect to humans, why is carbon monoxide a pollutant?
22. Which of the following fuels causes minimum environmental pollution?
23. The least preferred technique in the disposal of Municipal Solid Waste is :
24. Why Taj Mahal is suffering from “Marble Cancer”?
25. Which of the following is the treatment of water pollution?
26. Which one of the following weeds is effective in controlling water pollution caused by industrial effluents?
28. Why is Carbon Monoxide a pollutant?
29. The waste management technique that involves the use of micro-organisms to remove or neutralize pollutants from contaminated site is called
30. Which of the following is NOT a particulate pollutant?
31. Which of the following is usually not an air–pollutant?
32. Which of the following produces the most solid waste?
33. Substances considered to be biodegradable:
34. While testing pollution in water a high coliform count indicates high levels of .............
35. Which of the following is the best solution to get rid of non-biodegradable wastes?
36. ..........is a byproduct of sewage treatment and can be decomposed to produce bio-gas
37. The largest source of pollution in the world is
38. Which among the following is a non-biodegradable waste?
39. What purpose does the ultravoilet (UV) treatment of water serve?
40. Which is used as an Air pollution indicator?
41. Which of the following is the process of the natural aging of a lake by biological enrichment of its water?
42. Sulphur dioxide pollution is indicated by an excessive growth of which of the following?
43. Which of the following is also known as a common water Hyacinth?
44. Which of the following is responsible for turning Taj Mahal yellow?
45. Spraying of DDT on crops causes pollution of……….
46. Excessive richness of nutrients in a lake or other body of water is called……….
47. The most serious air pollutant causing health hazard is
48. Oil spills is seen in which ecosystem?
49. The Great Smog of 1952 was a severe air-pollution event which affected………
50. Arsenic problem in India is primarily due to
