PAPER-II ENVIRONMENTAL SCIENCES ENVIRONMENTAL SCIENCES Paper II Note This paper contains fifty objective type questions of two marks each. All questions are compulsory.

1. Which of the following methods is generally not adopted for the safe disposal of biomedical waste Incineration Hydroclaving Landfilling Shredding after disinfection

2. Which of the following prompted the Govt. of India to enact Environment (Protection) Act, 1986 River Ganga Water Pollution Endosulfan tragedy in Kerala London Smog Bhopal Gas Tragedy

3. Protection and improvement of environment and safeguarding of forest and wildlife is emphasized in constitution of India under the Article 48 A 21 47 46

4. Environmental Relief Fund was established under the provisions of The Environment (Protection) Act, 1986 The Indian Wild Life (Protection) Act, 1972 The Public Liability Insurance Act, 1991 The Forest (Conservation) Act, 1980

5. A type of lake that forms in the depression of the earth's crust between two parallel faults is known as Grade lake Surface lake Graben lake Glacial lake

6. In case of plumes from a tall stack located on flat terrain 'Lofting' type of plume behaviour is observed when in the atmosphere inversion conditions prevail below the stack height. strong lapse rate conditions exist. inversion conditions exist above the stack height. weak lapse rate conditions exist.

7. Turbulent updrafts and downdrafts flows are an example of Synoptic scale phenomena Planetary scale phenomena Meso-scale phenomena Micro-scale phenomena

8. A niche of the species where there is no competition from other species is called hyper volume niche habitat fundamental niche realized niche

9. Dissipative process of energy during photosynthesis in a plant is Decomposition Senescence Respiration Mineralization of humus

10. Which of the following substances is generally not considered toxic Carbonic acid Carbon monoxide Acetaldehyde Benzene

11. Percentage of tropospheric ozone in relation to total atmospheric ozone is about 90% 10% 50% 80%

12. Among the following, which one is the most hazardous chemical in the atmosphere Dioxin Carbon monoxide Halons CFCs

13. The technique, which is fastest for measuring organic carbon is, COD BOD5 BOD7 TOC

14. With increase in temperature, the specific conductivity of water remains unchanged increases decreases makes the water turbid

15. According to ZSI which one of the following birds declined by 99% Sparrow Pink-headed Duck Pond heron White backed Vulture

16. According to Convention on International Trade in Endangered species (CITES) COP 17, which one of the following is transferred from CITES Appendix II to Appendix I by January 2017. Gorilla Pangolin Tapir Mongoose

17. Taxonomic diversity of a region with several ecosystems is Alpha diversity Beta diversity Gamma diversity Sigma diversity

18. Soil water available to roots is Surface water Hygroscopic water Gravitational water Capillary water

19. C4 plants are commonly found in Arid and hot environment Humid and low temperature environment Temperature environment Semi-humid and rainy environment

20. The point at which the light intensity is just enough to produce energy by photosynthesis which equal to the energy used in respiration is called Equal point Regulatory point Compensation point Complementary point

21. The global pattern of prevailing winds drives the cell like circulation pattern of ocean currents called Trade winds Gyres Jet Streams Shallow drifts

22. As the number of species in a food web increases Food chain length tends to increase. System tends to be unstable. Energy flow decreases. System tends to collapse completely.

23. Each degree of latitude on the earth's surface represents approximately 91 km 101 km 111 km 121 km

24. Remote sensing satellites for earth observation are normally located in Elliptical orbit Sun-synchronous orbit Geo-synchronous orbit Equatorial orbit

25. Asian Ministerial Conference on Disaster Risk Reduction 2016 (AMCDRR 2016) was held in Bangkok Beijing New Delhi Colombo

26. Groundwater movement depends on the following characteristics of rock materials. Porosity Permeability specific yield specific retention capacity

Choose the correct code only and only and only and

27. Magma starts to crystallise when it loses heat during its upward rise to shallower level from a deep source. Which among the following is Bowen's Reaction Series Pyroxene, Hornblende, Olivine, Mica, Quartz Olivine, Pyroxene, Hornblende, Mica, Quartz Hornblende, Olivine, Mica, Pyroxene, Quartz Olivine, Pyroxene, Hornblende, Mica, Quartz

28. A 2000 MW dam has maximum head of 200 m. What is the rate of falling water on the turbines (Neglect losses) 102.00 1560.24 1020.41 800.00

29. A hydro power plant has a reservoir storage capacity of 2 × 103 m3 and its maximum head is 500 m. What is its potential energy 10 PJ 18.6 PJ 27.5 PJ 49 PJ

30. The maximum efficiency of hydrogen fuel cell is 0.96 0.92 0.83 0.72

31. In a biogas digestor having biomass and animal wastes as feed, for optimum methane production, the value of pH should be such that initially pH is in the range 6.6 to 7 pH 6.2 pH is in the range 7 to 7.2 pH is in the range 7.6 to 8

32. Which of the following statements is true in relation to solar flat plate collectors Glazing (glass or plastic) above the absorber plate Reduces convection losses Reduces conduction losses Reduces conduction and radiation losses Enhances the absorption of solar radiation onto the absorber plate.

33. Marine pollution is caused by

a. Sewage

b. Land runoff

c. Oil spills

d. Ocean mining

Choose the correct code and d only c and d only c and d b only

34. Which of the following wave properties is not taken advantage of in controlling noise Absorption Damping Interference Diffraction

35. The reaction O2 2O, which occurs in the stratosphere, does not occur in the troposphere to produce ozone due to lower tropospheric temperature absence of 242 nm radiation high air pressure

(4) high gas molecule concentrations

36. The most important global sink process for aerosols is Interception Sedimentation Impaction Wet deposition

37. Identify the correct sequence with reference to environmental clearance process for new projects Appraisal creening ->Scoping ->Public Consultation Screening Scoping Public Consultation Appraisal Scoping Public Consultation Appraisal Screening Public Consultation Appraisal Screening Scoping

38. Which of the following elements has the longest oceanic residence time Iron

(2) Lead Calcium

(4) Sodium

39. The purpose of offshore islands is focussed for site or landscape restoration to provide linkage between movement and genetic interchange of species. foster populations of endangered species without native or introduced predators. increase the availability of habitats. increase the stabilization of surface cover and protect the animal corridor on land.

40. Match the List-I and List-II. Identify the correct answer from the codes given below

List I List II
(Series) (Life Cycle Analysis) ISO 14040 Interpretation ISO 14041 Impact assessment ISO 14042 Principles and framework ISO 14043 Inventory Analysis

Codes

(a)

41. Which of the following can be used for valuing environmental amenities

a. Hedonic pricing

b. Travel cost

c. Contingent valuation

Choose the correct code a only b only b and c b and c only

42. A graphical representation where frequencies are plotted against class intervals is called stem and leaf plot Pie chart Histogram Box plot

43. Which one of the following is a density independent factor that limits the size of the natural population Predation Territoriality Severe drought Sex ratio

44. In a multiple regression analysis, if the variance of the observed variable Y is 1.57 and variance of the residue is 0.52, then R-square value is 0.85 0.67 0.72 0.52

45. The median value of the following data 8 and 100 is 3 5 4 20

46. Exchangeable sodium percentage 40, and pH 9.8 are characteristic of Acidic soil Weak saline soil Strongly saline soil Eroded soil

47. The climate meet COP-22 was held in which country Morocco South Africa Malaysia Indonesia

48. In an aquatic system, the presence of noxious gases such as H2S and CH4 is associated with abundant algal growth oxygen depletion absence of macrophytic vegetation excess of dissolved oxygen

49. Severe drought is declared if Deficit of rainfall is more than 50 percent of the normal. Deficit of rainfall varies between 25-45 percent of the normal. Rainfall deficit exceeds 25 percent of the normal. Rainfall deficit is between 15-25 percent of the normal.

50. The Global Warming Potential of a substance depends on

a. the spectral band of its absorbing wavelengths.

b. its residence time in atmosphere.

c. its number of carbon molecules.

d. concentration of the substance.

Choose the correct answer b and c only c and d only c and d only d and a only