Environmental Studies Question Bank

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Environmental Studies Question Bank

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Question Bank on Environmental Studies

1. What is the resultant noise if 8 sound levels of 50 dB(A) each mixed together ?
(A) 56 dB(A)
(B) 53 dB(A)
(C) 59 dB(A)
(D) 60 dB(A)

2. The project characteristics and the baseline information is brought together by…………….of impacts.
(A) Prediction
(B) Evaluation
(C) Assessment
(D) Identification

3. Which of the following models is frequently used to analyze the air quality impacts of single, elevated point source ?
(A) Box Model
(B) Mass Balance Model
(C) Gaussian Model
(D) Pasquill Model

4. How many environmental attributes were used to display the relationships in a cross-impact matrix developed by Johnson and Bell ?
(A) 90
(B) 100
(C) 92
(D) 80

5. Which of the following matrix is useful as a gross screening tool for impact identification ?
(A) Gross-impact Matrix
(B) Interaction Matrix
(C) Magnitude Matrix
(D) Leopold Matrix

6. Which of the following methods involves an explict and predefined relationship such as mathematical model for social impact prediction ?
(A) Qualitative Description
(B) Quantitative Description
(C) Application Specific Predictive Technique
(D) Relative comparisons of the effects of alternatives

7. Since 1950-51 under land utilisation in India, area under one of the following land-use category is decreased :
(A) Area under forest
(B) Fallow land
(C) Area under non-agricultural uses
(D) Net sown area

8. No. of significant figures in 0·1040 is :
(A) Three
(B) Four
(C) Five
(D) Six

9. When water is pumped from wells in some coastal areas, a problem arises known as :
(A) Saltwater incursion
(B) Sand deposition
(C) Permeability decrease
(D) Artesian recharge

10. Asphyxiants are chemicals that exclude :
(A) Oxygen
(B) Nitrogen
(C) Carbon dioxide
(D) Methane

11. Ozone in air is :
(A) Primary air pollutant
(B) Secondary air pollutant
(C) Tertiary air pollutant
(D) Fundamental air pollutant

12. Palustrine wetlands are called marshes, bog and tens are :
(A) Acidic
(B) Neutral
(C) Alkaline
(D) Oligotrophic

13. Surfactants or surface active agents are large organic molecules responsible in the waste water treatment :
(A) Foaming on the waste water treatment
(B) Encourage waste water treatment
(C) Allow oxygen to saturate
(D) Help to create upper photic zone

14. Analysis of polluted water will show the following patterns of the result :
(A) High DO – High BOD
(B) Low DO -— Low BOD
(C) Low DO —- High BOD
(D) No variations in DO and BOD.

15. A biological treatment of sewage where organisms are in suspension found in :
(A) Trickling filters
(B) Biological rotating contractor
(C) Activated sludge
(D) Up flow sewage blanket

16. Species with wide geographical ranges develop locally adapted population are known as :
(A) Species
(B) Genera
(C) Ecotypes
(D) Phyllum

17. Convention on International Trade for Endangered Species (CITES) has prepared list of species into various categories also known as appendix. The list of species which are to totally banned are in :
(A) Appendix-II
(B) Appendix-III
(C) Appendix-I
(D) Appendix-D

18. In ecology the relative degree of tolerance is seen in an organism. The term stenothermal is related to temperature :
(A) Narrow range of tolerance
(B) Wide range of tolerance
(C) Sensitive to tolerance
(D) Stenocious

19. To assess the presence of pathogenic bacteria and effectiveness of disinfection process which of the following analysis is done ?
(D) Total coliform

20. Mega-diversity region of the world are assigned on the basis of :
(A) Ecosystem richness
(B) Species richness
(C) Richness of genera
(D) Community richness

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21. Succession controlled and motivated by man is termed as :
(A) Autogenic succession
(B) Induced succession
(C) Allogenic succession
(D) Secondary succession

22. During nitrification, BOD is higher than true value of the waste water due to:
(A) Oxidation of carbonaceous material
(B) Accumulation of fatty substance
(C) Suspended material
(D) All of the above

23. In Xerosere ecological succession pioneer species are :
(A) Lichens
(B) Trees
(C) Shrubs
(D) Climbers

24. Microorganisms that derive their energy from oxidising inorganic compounds and use carbon dioxide as their carbon source are known as:
(A) Autotrophs
(B) Heterotrophs
(C) Chemoautotroph
(D) Saprotroph

25. The first national park of India “Jim Corbett National Park” was established in :
(A) 1905
(B) 1936
(C) 1971
(D) 1948

26. On molecule to molecule basis, the heat trapping potential is maximum of :
(A) CO
(B) CH
(C) Water vapour
(D) SQ

27. The only Floating National Park of India is :
(A) Jim Corbett
(B) Kaziranga
(C) Keoladeo Ghana
(D) Keibul Lamjao

28. Method of measurement of dust pollution is based on :
(A) Titration
(B) Gravimetric analysis
(C) Gas chromatography
(D) Bomb calorimeter

29. What is the particle size (in micron) in the dust pollution adversely affecting the alveoli of the human lungs ?
(A) PM 200
(B) PM 100
(C) PM 10
(D) PM 2.5

30. Decanter equipment is used in treatment of :
(A) Water pollution effluent treatment
(B) Air pollution gaseous treatment
(C) Soil contamination
(D) Noise pollution from loudspeakers

31. The Environment (Protection) Act was promulgated in the year :
(A) 1981
(B) 1974
(C) 1986
(D) 1977

32. Hospital wastes are :
(A) Inflammable
(B) Infectious
(C) Reactive
(D) Corrosive

33. Which one of the following is not the allotrope of carbon ?
(A) Graphite
(B) Diamond
(C) C2
(D) CE

34. Nitrogen content in urea is :
(A) 46%
(B) 36%
(C) 26%
(D) 16%

35. Permanent hardness of water is due to the presence of :
(A) Carbonates and bicarbonates
(B) Carbonates and nitrates
(C) Sulphates and chlorides
(D) All of the above

36. Which one of the following is an ozone depleting substance (ODS) group ?
(A) Methyl acetate, ferric chloride, HFC, CFC
(B) Methyl bromide, methane, CCly, CFC
(C) Methyl chloroform CCl,, HFC, CFC
(D) Acetone, CCl,, methyl bromide, CFC

37. Which of the following has decreasing solubility with increasing temperature ?
(A) K2SO2
(B) KNO3
(C) Ce2(SO4)3
(D) KClO3

38. Which one of the following is most abundant in the atmosphere ?
(A) He
(B) Ne
(C) Ar
(D) Xe

39. Number of moles present in one kilogram of solvent is called as :
(A) Normality
(B) Molarity
(C) Molality
(D) None of the above

40. Which of the following can not be performed by gas chromatography ?
(A) VOC determination
(B) Drug impurity profile
(C) Sodium determination in water sample
(D) Lubricant analysis

41. The following compounds are used as flocculators :
(A) K2SO4 and starch
(B) H2SO4 and activated silica
(C) Polyacrylamide and starch
(D) Starch and K2SO4

42. If an object, such an apple, is lifted above your head, the input energy is stored in a form called :
(A) Gravitational potential energy
(B) Chemical energy
(C) Kinetic energy
(D) Electrical energy

43. The severe convective storms (Thunder storms) are generally common over NE India during :
(A) Winter
(B) Summer monsoon season
(C) Premonsoon season
(D) Nov-Dec

44. The total ozone of the atmosphere is mostly concentrated :
(A) Between 10-15 km
(B) Between 25-30 km
(C) Between 35-50 km
(D) Above 50 km

45. In an environmental analysis, potassium content is expected as 6.00 mg/l but the analyst reported its value as 6.03 mg/l percent error in the measurement is :
(A) 1%
(B) 0.5%
(C) 10%
(D) 5%

46. Approximate relationship between effective head flow rate of a hydrosite and power generated P in kW is given by (where ‘H’ is in meter and Q is in cubic meter per sec) :
(A) P = 100 x Q x H
(B) P = 10 x Q x H2
(C) P = 10 x Q x H
(D) P = Q x H

47. The energy contained in the wind in KE/sec is given by a relationship which is proportional to :
(A) V
(B) V2
(C) V3
(D) V1/2

48. Most economic method of water conservation is :
(A) Construction of dams
(B) Interlinking of rivers
(C) Rainwater harvesting
(D) Watershed management

49. Groundwater arsenic contamination is known over the years in various parts of the world, the major incidence noted in Indian subcontinent is in :
(A) West Bengal and Bangladesh region
(B) Andhra Pradesh
(C) Maharashtra
(D) Punjab

50. The limit of 50 mg NO3 per lit in ground water was originally set to protect babies against :
(A) Methanoglobinaemia
(B) Fluorosis
(C) Arsenicosis
(D) Minamata