1. Ozone layer is being depleted by --> Chloroflurocarbon
2. Ozone layer exists in --> Stratosphere
3. Almost 99% of clean air consists of two gases which are --> Nitrogen and Oxygen
4. Sound becomes hazardous noise pollution at decibels --> Above 80
5. Biosphere reserve project was initiated in India during --> 1986
6. Deforestation generally decreases --> Rainfall
7. In an ecosystem, bacteria are the --> Decomposers
8. Full form of COD is --> Chemical Oxygen Demand
9. In Atmosphere nitrogen consists of --> 78%
10. Full form of BOD is --> Biological Oxygen Demand
11. Full form of CTBT is --> Comprehensive Test Ban Treaty
12. What percentage of land area should remain covered by forest to maintain Ecological balance? --> 33%
13. Rapid growth of population at present time is due to --> Lack of awareness among people to check birth rate
14. Supersonic planes cause --> Noise pollution
15. World environment day is celebrated every year on --> June 5
16. With respect to environment science, full form of SPM is --> Suspended Particulate Matter
17. First International Conference on environment held on --> June,1972
18. Environmental Protection Act enacted on --> 1986
19. Human being can hear range of sound frequency between --> 20-20,000 Hertz
20. The disease "Itai Itai" is caused by --> Cadmium
21. Taj Mahal is threatened due to --> Sulphur dioxide
22. Minamata diseasse are first detected in --> Japan
23. Silviculture is the management of --> Forests
24. Syringes are examples of --> Biomedical wastes
25. Phytoplanktons are the members of --> Aquatic ecosystem
26. All species of ‘Lemur’ are endemic to which among the following places of the world? --> Madagascar
27. The Machia Biological Park is located in which state? --> Rajasthan
28. If waste materials contaminate the source of drinking water which of the following diseases will spread ? --> Typhoid
29. Abiotic environment does not include --> Plants
30. The depletion in the Ozone layer is caused by --> chlorofluorocarbons
31. An animal that can tolerate the heat of the desert is --> camel
32. The increase in the concentration of CO2 in our environment in last fifty years; since 1960 is about --> 14%
33. Vermicomposting is done by --> worms
34. Air pollution is caused by --> Smoke
35. The group of organisms which convert light into food are called --> autotrophs
36. The three primary soil macronutrients are --> potassium, phosphorus and nitrogen
37. The concentration of which gas is highest in our environment? --> Nitrogen
38. Air is composed of gases, water vapours and --> dust particles
39. A major in-stream use of water is for --> producing hydroelectric power
40. In our country the Van Mahotsav Day is observed on --> First of July
41. Plants are green because of the presence of a pigment called --> glucose
42. Lewis Hamilton is associated with --> Formula One Racing
43. ‘Kuna’ is the currency of which country? --> Croatia
44. Appy Fizz, the carbonated apple juice is product by --> Parle Agro
45. ‘Because You’re Worth It’ is the tagline of which company? --> L’Oreal
46. In context of space technology, what does abbreviation ‘PSLV’ stand for? --> Polar Satellite Launch Vehicle
47. Who is the current CEO of multinational technology company Apple Inc.? --> Tim Cook
48. Itanagar is the capital city of which North-Eastern state of India? --> Arunachal Pradesh
49. The famous Kedarnath temple is located in which state of India? --> Uttarakhand
50. Persistent high inflation combined with high unemployment and stagnant demand in a country’s economy is referred to as --> Stagflation
51. Every year, 2nd February is celebrated across the world as --> World Wetlands Day
52. The new Indian Currency Note of Rs. 2000/- denomination has an image of --> Mangalyaan
53. hemical group Halons are emitted in --> British Columbia
54. Annual ozone hole is located on continent --> Antarctica
55. Burning of fossil fuels --> increases greenhouse gases
56. Color of ozone molecule is --> blue
57. When chlorofluorocarbons are released in atmosphere, chlorine chemical destroys the --> ozone molecules
58. Methyl chloroform, carbon tetrachloride, hydro fluorocarbons and chlorofluorocarbons are mainly known as --> ozone depleting substances
59. Chemical released by chlorofluorocarbons that causes depletion of ozone layer in atmosphere is --> chlorine
60. Higher energy level and shorter wavelengths are features of --> ultraviolet radiation
61. Greenhouse gases which is present in very high quantity is --> carbon dioxide
62. Layer of atmosphere in which Ozone layer lies is --> stratosphere
63. Chemical substance used in industry for cold cleaning, adhesives and vapor degreasing is --> methyl chloroform
64. Gas molecules that absorb thermal infrared radiation and are present in large quantity to change climate system are known as --> greenhouse gases
65. Name of extremely effective firs extinguishing agent is --> halons
66. Name of protocol signed to reduce production of chlorofluorocarbons is --> Montreal Protocol
67. Height of ozone above surface of Earth is --> 15 to 30 km
68. Most serious group of chemicals emitted in British Columbia that causes depletion of ozone layer are --> halons
69. Lower energy level and longer wavelengths are features of --> infrared radiation
70. Wavelength of ultraviolet radiations is --> shorter
71. Layer which saves life from harmful effects of UV radiations is known as --> ozone layer
72. Number of atoms in ozone molecules are --> 3
73. Montreal protocol to reduce production of chlorofluorocarbons was assigned in --> 1987
74. Wavelength of infrared radiations is --> longer
75. Exchange of outgoing and incoming radiations that keep Earth warm is known as --> greenhouse effect
