1. Chemosynthesis involves CO2 fixation using energy derived from

Sunlight


In frared radiation


UV-radiation


Inorganic and Organic compounds



2. Wind in the mountain-valley regions are of

Micro scale


Meso scale


Macro scale


Synoptic scale



3. In tropical region an aircraft is flying at an altitude of 10 km. At that altitude the temperature is 40 °C. What is the ambient temperature on the ground

24 °C


40 °C


30 °C


20 °C



4. Assertion Upper atmosphere shields life on earth.

Reason Ultraviolet radiations are absorbed in the upper atmosphere.
Choose the correct answer


Codes

Both and are true and is the correct explanation of


Both and are true, but is not the correct explanation of


is true and is false.


is false and is true.



5. The molar extinction coefficient of proline ninhydrin complex at 520 nm is 0.34 µM-1Cm-1. A solution of the proline ninhydrin complex has an absorbance of 0.68 in a one centimeter cuvette. The concentration of proline is

0.5


0.2312


2.312


2



6. The principal components of photochemical smog in urban areas are

SO2 and NO2


SPM and CO


SPM and NO2


Oxides of Nitrogen, Hydrocarbons and Ozone.



7. The amount of a particular gas dissolved in water depends on
its solubility in water.

its partial pressure at the air/water interface or sediment/ water interface.

the water temperature.

the levels of salts in the water. Identify the correct answer


and only


and only


and only


and



8. A 50 ml solution of pH 1 is mixed with a 50 ml solution of pH 2. The pH of the mixture will be nearly

0.76

1.26

1.76

2.26



9. The solubility product of the following type of reaction

Al Al3+ 3O H is









10. Cells grown in medium containing isotope sulphur 35 will show radio labelling in

membrane lipids


membrane proteins


glycogen


nucleic acid



11. A stream flowing at 10.0 m3/s has a tributary feeding it with a flow of
5.0 m3/s. The stream concentration of chloride upstream at the junction is
20.0 mg/L and the tributary chloride concentration is 40 mg/L. Treating chloride as a conservative substance and assuming complete mixing of the two streams, find the down stream concentration.

26.7 mg/L


30.2 mg/L


22.6 mg/L


35.2 mg/L



12. Assume that dilution factor p for an unseeded mixture of waste and water is 0.03. The DO of the mixture is initially 9.0 mg/L and after 5 days, it has dropped to 3.0 mg/L. The reaction rate constant has been found to be 0.22 day. Five day BOD of the water will be

200 mg/L

150 mg/L

100 mg/L

75 mg/L



13. Nudation is generally caused by

migration of species


climate change


invasion of foreign species


modification of habitat



14. Which one of the following is the best tool to study the interacting residues in protein-ligand interaction

X-ray crystallography


Circular dichroism spectroscopy


UV Vis spectroscopy


Fluorescence spectroscopy



15. During centrifugation, if the centrifugal force is FC, buoyant force is Fb, and frictional force is Ff, which of the following equations expresses the sedimentation of the molecule

FC Fb Ff

FC Fb Ff

FC Fb Ff

FC Fb Ff

16. Match the List I with List II and choose the correct answer from the given codes

List I(Lakes) List II (Characteristics)

a. Oligotrophic i. More nutrient lakes concentration

b. Dystrophic ii. Magmatic water lakes

c. Eutrophic iii. Low nutrient lakes concentration

d. Volcanic iv. Low pH and high humic acid conditions
lakes

Codes

a b c d

i ii iii iv


ii i iv iii


iii iv i ii


iv iii ii i



17. The earthworm used for composting is

Crassiclitellata excavata


Octochaetona serrata


Lumbricus terrestris


Eisenia foetida Choose the correct answer


and only


and only


and only


and only



18. The amount of the living material present in different trophic levels at a given time is called

standing crop


standing state


biomass


biosphe
Choose the correct answer

and are correct.


is correct.


is correct.


and are correct.



19. Many orchids use trees as a surface to grow. This is an example of

Commensalism


Mutualism


Parasitism


Predation



20. The strategist is a

small organism that has a short life, produces many offsprings and does not reach carrying capacity.


small organism that has a longer life, produces offsprings and does not reach carrying capacity.


small organism that has a short life, produces numerous offsprings and reach carrying capacity.


medium organism that has a short life, produces numerous offsprings and reach carrying capacity.



21. Under the Rhino relocation project, during 1987, Rhinoes were introduced in

Assam


Meghalaya


West Bengal


Madhya Pradesh



22. Which of the following is an endangered bird species

Kashmir stag


Great Indian Bustard


Hangul


Black buck



23. In India, Crocodile breeding project started for the first time in

Tamil Nadu


West Bengal


Odisha


Goa



24. Identify the correct sequence of materials in terms of their porosity.

Sand clay gravel


Clay sand gravel


Gravel sand clay


Gravel clay sand



25. For an aquifer of gravel having cross sectional area of 4 m2 and a depth of
2.5 how much water could potentially be extracted (The porosity and specific yield of gravel are 25% and 20% respectively.)

0.5 m3


0.25 m3


0.125 m3


1 m3



26. The layers formed by thermal stratification in lakes are

Epilimnion, Midlimnion, Hypolimnion


Epilimnion, Oligolimnion, Hypolimnion


Epilimnion, Dystrolimnion, Hypolimnion


Epilimnion, Thermocline, Hypolimnion



27. On an aerial photograph, the focal length of the camera lens is 6 inches and flying height over the datum line is 15,000 ft. What is scale of the aerial photograph

1 30,000


1 10,000


1 5,000


1 25,000



28. Which of the following substrate will have highest reflectance value

Silt loam with 20% moisture.


Clay with 36% moisture.


Silt loam with 0.8% moisture.


Clay with moisture.



29. Assertion For sustainable development of a region, proper land use planning is required.
Reason Land use planning involves inputs of soil types, rock types, seismicity, weather pattern and socio-economic conditions of a region.


Codes

Both and are true and is the correct explanation of


Both and are true, but is not the correct explanation of


is true and is false.


is false and is true.



30. Tundra is a biome characterized by

stunted trees and permanently frozen sub-surface soil.


coniferous trees and permanently frozen sub-surface soil.


lack of trees and permanently frozen sub-surface soil.


evergreen trees and permanently frozen sub-surface soil.



31. Acid mine drainage occurs when

the combined action of O2, H2O and certain bacteria cause sulphur in coal to form H2SO4.


the combined action of H2O and certain bacteria cause sulphur in coal to form H2SO4.


the combined action of O2 and certain bacteria cause sulphur in coal to form H2SO4.


the combined action of SO2 and certain bacteria with coal to form H2SO4.



32. In accordance with the Saffir Simpson hurricane scale, a cyclonic storm of category 5 should have wind speeds

69 ms-1


50 58 ms-1


59 69 ms-1


33 42 ms-1



33. Assertion Large scale OTEC development may not be good for environment.
Reason Release of CO2 from ocean depths into the atmosphere could exacerbate GHG effect.


Codes

Both and are true and is the correct explanation of


Both and are true, but is not the correct explanation of


is true, but is false.


Both and are false.



34. In a methane fuel cell, what will be the voltage of the cell and its efficiency

(Given .G° 8 × 105 Joules/gm mole .H° 8.8 × 105 Joules gm mole and Faraday's constant 96500 coulomb/ gm-mole)

1.23 Volts, 90.9%


1.04 Volts, 90.9%


1.15 Volts, 11%


2.13 Volts, 92%



35. The coefficient of performance for an ideal wind mill is

3/8


5/16


2/5


16/27



36. Assume that the energy released during the combustion of methane is 900 kJ/mol. Its carbon intensity is

13.3 gc/MJ


15.3 gc/MJ


19.7 gc/MJ


24.2 gc/MJ



37. In a nuclear fusion reactor it is envisaged to use a liquid blanket of Li to absorb fast neutrons from D+T reaction. How many neutrons are
produced as a result of 7Li 1n
30

1


2


3


4



38. In an ideal MHD power plant, the electrical efficiency corresponding to maximum power production is

50%


75%


25%


100%



39. Energy intensity is a measure of

effectiveness of energy utilisation


energy produced per unit area


energy produced per unit volume


energy produced per unit area per unit time



40. One of the criteria for characterizing a region as ABC hotspot is that the annual mean anthropogenic Aerosol Optical Depth is greater than

0.3


0.5


0.8


0.1



41. The resultant of two noise levels of 50 dB and 55 dB is

58 dB


55.41 dB


52.5 dB


56.19 dB



42. Which of the following is used as a coagulant for removal of phosphates in water

Aluminium sulphate


Iron sulphate


Copper sulphate


Potassium chromate



43. Which of the following radio nuclides has the longest half-life

C14


Sr90


I131


Cs137



44. Under anaerobic conditions nitrogenase catalises

breakdown of atmospheric nitrogen


oxidation of atmospheric nitrogen


reduction of atmospheric nitrogen


hydrolysis of nitrogenous compounds



45. Size range of atmospheric aerosols is

5nm 100µm


100µm 150µm


150µm 200µm


0.01nm 5nm



46. Which one of the following is used as microbial indicator of water contamination

Coliform bacteria


Giardia


Cryptosporidium


Tobacco mosaic virus



47. Elevated salt and Na+ concentrations in soils are highly toxic to many plants, but relatively high tolerance level (to this toxicity) is seen in

Sugarbeet


Sugarcane


Onion


Lettuce



48. Which of the following hydrocarbons is emitted by vegetation

Ocimene


Xylene


Acrolein


3 Pentadions



49. For particles of size 5µm, the efficiency of cyclones can be as high as

50%


60%


80%


90%



50. Given the following parameters of a
primary settling chamber
Diameter 50m, Depth 2.5m,
average detention time 2 hours.
How much quantity of waste water is
being treated


58928 m3/day


48321 m3/day


45321 m3/day


25321 m3/day



51. A flat surface type electrostatic precipitator has the following parameters collector plate area A 4600 m2, volumetric flow rate Q 200 m3/s and effective drift velocity of flue gas 0.15 m/s. What is the efficiency of the ESP

0.968 0.981


0.975 0.922



52. Assertion Cost-benefit analysis for assessment of natural systems is not merely concerned with the effects on environmental quality but seeks the conditions for sustainable use of the natural resources of a region.
Reason Cost-benefit analysis is not useful for small scale development projects, but is better suited for the analysis and evaluation of a regional development plan.
Identify the correct answer


Codes

Both and are true and is the correct explanation.


Both and are true but is not the correct explanation.


is true and is wrong.


Both and are wrong.



53. Battelle-Columbus weighting scaling check list methodology for water-resources projects obtains base line data on how many environmental parameters

40


78


68


50



54. Match List I with List II and choose the correct answer from the codes given below

List I List II

a. Check lists METHODS i. Involve preparation methods of a set of transparent maps, which represent the spatial distribution of an environmental characteristics

b. Overlays ii. Highly structured
methods approaches involving importance weightings for factors and appli-cation of scaling techniques
c. Adhoc iii. Identification and
methods evaluation of interactions between various activities and environmental parameters

d. Matrices iv. Indicate broad areas
methods of possible impacts by listing composite environmental parameters


Codes
a b c d

i ii iii iv


iv ii i iii


ii i iv iii


iii iv ii i



55. Match List I with List II and choose the correct answer from the codes given below

List I (Criteria of List II EIA Methodology) List II (Component)
a. Impact i. Magnitude identification

b. Impact ii. Specificity measurement

c. Impact iii. Depth of communication analysis

d. Impact iv. Compre­ hensive overall perspective

Codes
a b c d

i iv iii ii


ii i iv iii


iii iv i iv


iv iii ii i



56. Significant hazard/accident factor to be considered under risk assessment of distillaries are

toxic gas release and human accident


pressure wave and heat radiation


toxic gas release and radiation


pressure wave and toxic gas release



57. If is the impact of the population on the environment, is the size of the population, is the per capita affluence or consumption and is the damage caused by technologies, then which of the following equation is correct

×


P × A × T


×


×



58. According to Environment (Protection) Act, 1986 permissible limits of oil and grease in the effluents to be discharged into public sewers is

10 mg/l


20 mg/l


25 mg/l


30 mg/l



59. 'Reed swamp stage is also referred to as

submerged stage


woodland stage


rooted floated stage


amphibious stage



60. Match List I with List II and choose the correct answer from the given codes

List I (Ecosystem types) List II (Characteristics)

a. Coral reefs i. Still water

b. Deltas ii. Saline water

c. Wetlands iii. Brackish water

d. Rivers iv. Fresh water



Codes
a b c d

i ii iii iv


ii iii i iv


ii i iv iii


iii iv i ii



61. Maximum energy content in a typical municipal solid waste is found in

Plastic


Leather


Wood


Textile



62. Public Liability Insurance Act was enacted in the year

1991


1993


1995


1997



63. A sample size of 17 observations is
selected from a normal population

with mean 50. The sample mean

and variance are 48 and 8


66. A .2 distribution with 10 degrees of freedom has variance

10


20


5


40


67. The rank of the matrix 1 1 .1


2


3


1


Not possible to determine.



68. Which of the following is not an( 2 0 5 )eigenvector of the matrix













69. Assertion Ground level concentration of pollutants decreases when taller stacks are used.

Reason The ground level concentration varies inversely proportional to the height of the stacks.

Codes

Both and are correct and is the correct explanation of


Both and are correct, but is not the correct explanation of


is true and is false.


Both and are false.



70. Assume that 5.3 billion people live in less developed countries, where average birth rate is 23 and infant mortality rate is 53. Then the total death due to infant mortality are

6.5 × 106/year


5.3 × 106/year


7.3 × 106/year


8.5 × 106/year



71. Which of the following act as natural sink for carbon
I. Trees
II. Oceans
III. Soils
Choose the correct code


I only


I and II only


II and III


II and III only



72. Match List I with List II and choose the correct answer from the codes given below:

List I (GHGs) List II (Atmospheric Lifetime)
a. CFC-12 i. 12

b. Methane ii. 50-200

c. CO2 iii. 114

d. N2O iv. 100

Codes

a b c d

iii iv i ii


ii iii iv i


iv i ii iii


i ii iii iv


73. REDD+ initiatives include
I. Forest carbon partnership facility
II. Forest investment programme
III. Sanitation for all
IV. Food security for all Choose the correct code

I and IV only


I and II only


II and III only


III and IV only



74. Match List I with List II and choose the correct answer from the codes given below:

List I (Environment Related Treaties) List II (Year)

a. CITES i. 1989

b. Basel ii. 1973

c. UNFCCC iii. 1997

d. Kyoto Protocol iv. 1992

Codes
a b c d

iii ii i iv


iv iii ii i


i iv iii ii


ii i iv iii



75. Identify the correct sequence with reference to sensitization about environmental problems.

Knowledge . Awareness . Attitude . Skill . Evaluation ability . Participation


Knowledge . Awareness . Skill . Attitude . Participation . Evaluation ability


Awareness . Knowledge . Attitude . Skill . Evaluation ability . Participation


Awareness . Knowledge . Participation . Attitude . Skill . Evaluation ability