PAPER-III
ENVIRONMENTAL SCIENCES






J-89-16 1 P.T.O.


ENVIRONMENTAL SCIENCES
PAPER III

Note This paper contains seventy five objective type questions of two marks each. All questions are compulsory.
1. A stream with a flow rate of 0.2 m3/s and a chloride concentration of 50 mg/L receives a
discharge of mine drainage water with a flow rate of 0.05 m3/s and chloride concentration of 1500 mg/L. The downstream concentration of chloride is

450 mg/L 200 mg/L


250 mg/L 340 mg/L


2. Reclamation of Usar soil can be done by

addition of gypsum


addition of compost


blue green algal biofertilizer use


addition of inorganic nitrogenous fertilizer
Choose the correct code



and only and only


and only only


3. The equilibrium reaction N2 O2

2NO is characterised by

decrease in the Gibbs free energy of forward reaction


increase in the Gibbs free energy of the backward reaction


minimum Gibbs free energy at equilibrium


change in Gibbs free energy to be zero at equilibrium
Choose the correct code



only and only


and only only


P

4. In profundal zone, P and R ratio,

...
R




>0.1


5. Consider the following statements about deritovores

They consume the organic matter originating from plant remains.


They consume the organic matter originating from animal remains.


They are abundant in aquatic habitats.


They are abundant in terrestrial habitats.
Choose the correct code



and only and only


and only and


...

is

6. The Box model for an airshed over a city has the following parameter values Length of the airshed 24 km Average wind speed 4m/s
If the initial concentration of a pollutant over the city is zero, estimate the time in which the concentration of the pollutant in the airshed reaches 63% of its final value.

1 hr 10 minutes 1 hr 20 minutes


2 hrs 30 minutes 1 hr 40 minutes


7. Match the List-I and List-II. Identify the correct answer from the codes given below
List- I List- II
(Organic compound) (Source)

a.
Terpene i. Ruminants

b.
Methane ii. Soil

c.
Humic acid iii. Coal tar

d.
Benzo pyrene iv. Plants



Codes
ab cd

i ii iii iv


iv i ii iii


iv iii ii i


ii i iii iv


8. Among the following taxonomic groups which one has the least number of known species

Nematodes Fungi


Porifera Insecta


9. At the average surface temperature of the earth, what is the wavelength at which maximum terrestrial radiation are emitted

8.08 µm 11.52 µm


10.06 µm 3.48 µm


10. About 97% of all atmospheric mass in the atmosphere lies upto an approximate height of

km km


km km


11. Which of the following materials is the most efficient absorber of terrestrial and solar radiation

Suspended dust particles Ice particles


Fly ash particles Black carbon particles


12. An infinitesimal air parcel rises slowly upwards in the atmosphere. In this context, which of the following statements is not correct

Heat change, dq is zero.


Internal energy decreases.


Temperature during ascent decreases.


Lapse rate has a negative numerical value.


13. Given below are two statements. One labelled as Assertion and the other labelled as Reason
Assertion The ratio 18O/in natural systems can be used as a thermometer.
16
O 18
Reason The ratio O/16 depends on the temperature.
O

Choose the correct answer

Both and are correct and is the correct explanation of


Both and are correct and is not the correct explanation of


is true, but is false.


is false, but is true.


14. Ecosphere comprises of the following

Biosphere and Troposphere.


Biosphere, Troposphere and Hydrosphere.


Biosphere, Hydrosphere and Lithosphere.


Biosphere, Atmosphere, Hydrosphere and Lithosphere.


15. Given below are two statements. One labelled as Assertion and the other labelled as Reason
Assertion In an exponential growth phase of the Logistic growth model, the population growth is maximum.
Reason After a lag phase, the population is well supported by environmental resources.
Choose the correct answer

Both and are correct and is the correct explanation of


Both and are correct and is not the correct explanation of


is true, but is false.


is false, but is true.


16. An anemometer at a height of 10 m above the ground measures a wind speed of 0.5 m/s. For a neutral atmosphere with wind profile exponent p 0.25, the wind speed at an elevation of 160 m will be

1 m/s 1.8 m/s


0.5 m/s 2.5 m/s


17. In Leslie matrix model, the dynamics of a population explains

growth of the population


decreasing trend in the population


stable condition
Choose the correct code



and only and only


and only and


18. In the initial stages of landfill, which of the following gas is predominantly released

Carbon dioxide Methane and Ammonia


Methane Hydrogen Sulphide


19. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II (Goal) (Statistical test)
a.
To quantify association between two i. Mean and standard
variables with normal distribution deviation


b.
To compare two unpaired groups ii. Pearson correlation
under non-normal distribution


c.
To compare three or more unmatched iii. Mann-Whitney test
groups in binomial distribution


d.
To describe a group of data under iv. .2


test
normal distribution


Codes
a b cd

i ii iii iv


ii iii iv i


iii iv i ii


iv i ii iii


20. A sampling error of 2.5758 where s is the standard deviation along with critical value of 2.5758 represents the significance level of

5.0% 1.0%


2.7% 4.55%


21. In random samples of 64 boats out of a total 2400 boats, the mean number of defective boats is 3.2 with a sample standard deviation 0.8. The standard error of the mean is

0.107 0.40


0.97 0.097


22. The Compensatory Afforestation Fund was started by Government of India in the year

2002 2004


2006 2008


23. According to CRZ notification 2011, which of the following activities is permissible in CRZ-I

Removal of mangroves for housing activities.


Storage of hazardous cargo.


Pipelines, conveying systems including transmission lines.


Reclamation of salt marshes and nesting grounds.


24. Among the following methods, the most cost effective method for treating the infectious waste from hospitals is

Autoclaving Deep burial


Incineration Fumigation


25. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II (Protocols/Acts) (Subject)
a.
Nagoya Protocol i. Intellectual Property Rights

b.
Air (Pollution Prevention and Control) ii. Biodiversity
Act, 1981


c.
Indian Patent Act, 1970 iii. Noise Pollution

d.
Environmental Protection Act, 1986 iv. Environmental Audit



Codes
a b cd

i ii iii iv


ii i iv iii


ii iii iiv


iii iv ii i


26. According to the Wildlife (Protection) Act, 1972, permission for hunting of a rogue animal which is dangerous to human life can be granted only by

Chief Wildlife Warden


Conservator of Forests


Deputy Conservator of Forests


Chief Secretary of the Government


27. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II
(Ecolabels) (Country)

a.
Green Seal i. India

b.
Blue Angel ii. USA

c.
Eco-mark iii. Belgium

d.
Eco Garantie iv. Germany



Codes
a b cd

ii iv iiii


iii i ii iv


iv ii iii i


i iii iv ii


28. Overgrazing of public land by privately owned livestock is an example of

right of the grazing domain principle of empowerment


tragedy of the commons swapping of debt for nature


29. Social, economic and ecological equity is the necessary condition for achieving

social development economic development


sustainable development ecological development


30. A management system enabling an establishment to identify and control the environmental impacts due to its activities

ISO 14020 ISO 14001


ISO 14004 ISO 19011


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

List- I List- II (Principle/Process) (Objectives)
a.
Cradle to grave i. Economic strategy for pollution control

b.
Polluter pays ii. Environmental impact of production, use and disposal

c.
Precautionary principles iii. Cleaner production

d.
Waste prevention and minimization iv. Cost effective measures to prevent environmental degradation



Codes
ab cd

i ii iii iv


ii i iv iii


iii iv i ii


iv i ii iii


32. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II
(Steps in EIA) (Description)

a.
Impact prediction i. Environmental status of an area

b.
Baseline data collection ii. Hazard probability

c.
Decision making iii. Impact assessment authority

d.
Risk assessment iv. Reversible and irreversible impacts



Codes
ab cd

ii iii iiv


iii iv ii i


iv i iii ii


i ii iv iii


33. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II (EIA Methods) (Developed by)
a.
Interaction Matrix i. J. Sorenson

b.
Environmental Evaluation System ii. D. Carsten

c.
Network Method iii. L.B. Leopold

d.
Descriptive Checklist iv. Battelle Columbus



Codes
ab cd

i ii iii iv


iii iv ii i


iii iv i ii


iv i ii iii


34. Which of the following in soil is an essential micronutrient

Nitrogen Calcium


Magnesium Chlorine


35. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II (Pollutant) (Ambient Indian Standards 24 hrs.)
a.
NO2 i. 60 µg/m3

b.
PM2.5 ii. 80 µg/m3

c.
Ammonia iii. 100 µg/m3

d.
PM10 iv. 400 µg/m3



Codes
a b cd

ii i iv iii


i iii iv ii


iii iv ii i


iv ii iii i


36. Coral bleaching observed in marine environment is caused by

sea floor rise.


decline in zooxanthellae due to climate change.


addition of bleaching powder by ships.


death of fishes due to toxic algal blooms.


37. Ultrafilteration does not allow which of the following to pass through

Small organic molecules Colloidal particles


Viruses Bacteria


38. Consider dry atmosphere which has temperatures of 14.5 °C and 12.5 °C at elevations of 2 m and 252 respectively. The atmosphere is

conditionally unstable unstable


neutral stable


39. An electrostatic precipitator has collection efficiency of 98% for fine particles of a dirty gas. Its collection area of plates is 50 m2 and gas flow rate is 20 m3/s. If the migration
velocity of the particles is changed by 0.1 m/s by changing the electric field, what will be the change in collection efficiency

0.05 0.10


0.005 0.001


40. A person is exposed to two sound levels of 80 dB and 100 dB simultaneously. What is the average noise level the person experiences

dB dB


dB dB


41. An ocean wave of 2 m height has a time period of 10 sec. Approximate power associated with per meter of wavefront is

kWm-1 kWm-1


kWm-1 kWm-1


42. Given below are two statements. One labelled as Assertion and the other labelled as Reason Assertion Presence of moisture in biomass often leads to significant loss in useful thermal output.
Reason Evaporation of water requires significant amount of energy.
Choose the correct answer


Both and are correct and is the correct explanation of


Both and are correct and is not the correct explanation of


is true, but is false.


is false, but is true.


43. For thermonuclear fusion to occur what must be the minimum confinement time of the hot 3
plasma of ion density 1022 per m

10 µs 1 ms


100 µs 10 ms


44. An insolation of 1000 W/m2 is incident on a single Si solar cell of area 80 cm2. Assuming that of photons create electron-hole pairs and that the average energy of the photons is 1 eV. What is the short circuit current of the cell

1.6 A 0.8 A


0.4 A 3.2 A


45. A tidal estuary of tidal range 5 m has an area of water trapped 10 km2. If we assume
density of water 103 kg/m3 and g 9.8 what is the maximum theoretical energy available per cycle

24.5 × 1011 J 12.25 × 1011 J


24.5 × 108 J 12.25 × 1010 J


46. Among the following types of fuel cells, which one has the lowest operating temperature

Solid oxide Proton-exchange membrane


Molten carbonate Phosphoric acid


47. Given below are two statements. One labelled as Assertion and the other labelled as Reason Assertion Global warming potential for nitrous oxide is similar whether expressed over 20 years or 100 years.
Reason The life time of nitrous oxide in atmosphere is about 10 years. Choose the correct answer

Both and are correct and is the correct explanation of


Both and are correct and is not the correct explanation of


is true, but is false.


is false, but is true.


48. Suppose the world's energy consumption per year grows exponentially at a growth rate of per year. In how much time, the energy consumption per year will double from the present value

35 years 70 years


50 years 40 years


49. Eutrophication in inland wetlands such as lakes is caused by

enrichment of water by chlorides enrichment of water by phosphates


addition of detritus silt from the catchment


50. Parameters used in the computation of urban Air Quality Index are
PM,NO,SOand Pb
2.5xx

PM10, BTX, CO, NOx, SOx and Cl


PM,PM,NO,Pb,NH,COand SO


PM,PM,NO,SO,CO,O,NHand Pb


102.5232
102.52233
51. Identify the correct order of aquatic ecosystems based on their primary productivity

reservoir river marsh swamp


marsh swamp reservoir river


swamp marsh reservoir river


river reservoir marsh swamp


52. Adaptive management of an ecosystem restoration programme involves

conservation programme for a finite period.


top-down approach.


monitoring, review and mid-course correction.


implementation and monitoring of a conservation plan.


53. For estimation of inundated areas which spectral region is best suited

Visible Near infra-red


Far infra-red Microwave


54. What percentage of water on earth is fresh water (liquid/solid form)

7.5% 3.5%


2.5% 1.5%


55. The maximum velocity of Indian Plate is observed in

Kathmandu Maldives


Kolkata Daman and Diu


56. Tropical cyclones develop as a result of balance between forces of
.
.
Pressure gradient force and centrifugal force
.
.
and coriolis force
.
.
and
..
and frictional force
57. Match the List I and List II. Identify the correct answer from the codes given below

List- I List- II (Rock type) (Mineral)
a.
Bailadila group i. Mn

b.
Nallamalai group ii. Phosphate

c.
Udaipur group iii. BIF

d.
Sausar group iv. Pb-Zn



Codes
a b cd

iii iv ii i


iv ii iii i


ii iii iv i


iii iv i ii


58. Match the List I and List II. Identify the correct answer from the codes given below List- I List- II
(Rock/Minerals) (Chemical Composition)
a.
Quartz i. Fe3O4

b.
Magnetite ii. CaF2

c.
Fluorite iii. SiO

d.
Calcite iv. CaCO


2 3

Codes
a b cd

iii i ii iv


iv iii i ii


ii iv iii i


i ii iv iii


59. The sum of deep sub-surface and delayed shallow surface flows in humid climate is known as

Sub-surface flow Base flow


Pipe flow Inter flow


60. Urban heat island effect can best be monitored in the following spectral region

1 3 µm 3 5 µm


10 12 µm 3 6 µm


61. The final seral stage of succession is governed by which of the following concepts

Seral climax Poly climax


Null climax Micro climax


62. In a natural ecosystem pollination pertains to

supporting services regulating services


cultural services provisioning services


63. Balanoglossus a unique protochordata is conserved in marine protected areas of

Saint Mary's Island Jambudweep Island


Car Nicobar Island Kurusadai Island


64. A group of species, that make their living by exploiting the same class of resources in a similar way, is known as

Pride Guild


Bunch Herd


65. In comparison to C3 plants, the C4 plants are adapted to

low light and low temperature.


bright light and high temperature.


low light and medium temperature.


very low light and average temperature.


66. The life style that an organism pursues and the resources it utilizes, is referred to as

Fundamental niche Realized niche


Actualized niche Mechanized niche


67. The evolution of two interacting species, each in response to selection pressure imposed by the other is called

Coevolution Adaptation


Mitigation Mutualism


68. Methanogenesis occurs in natural aquatic environments at a redox potential of about

200 mV +150 mV


+250 mV 300 mV


69. Which of the following trace atmospheric constituents has no natural source

Methyl bromide Dimethyl sulfide


Carbonyl sulfide Trichlorofluoromethane


70. Given below are two statements. One labelled as Assertion and the other labelled as Reason Assertion High temperature makes N2 and O2 to react and produce pollutant NO.
Reason The reaction N2 O2

is exothermic.
Choose the correct answer


Both and are correct and is the correct explanation of


Both and are correct and is not the correct explanation of


is true, but is false.


is false, but is true.


71. In a cuvette of path length 1.0 cm, a 0.01 M solution of a compound is filled. If the transmittance of the solution be what is its absorbance

6.90 2.00


0.50 0.30


72. Match the List I and List II. Identify the correct answer from the codes given below
List- I List- II
(Analysis) (Instruments)

a.
Protein i. Gravimetry

b.
SO NOii. Flame photometry

c.
Sulphate iii. Electrophoresis

d.
Sodium iv. Spectrophotometry


x x

Codes
a b cd

iii iv i ii


i ii iii iv


ii iii iv i


iv i ii iii


73. Which one of the following is not a Phase-I reaction component in biotransformation of pesticides

Oxidation Conjugation


Reduction Hydrolysis


74. Solubilization and transport of iron in natural water is generally done by

Humin Fulvic acid


Humic acid EDTA


75. In a water body suffering from mercury pollution, the most toxic species among the following is

Mercurous ion Mercuric ion


Methylmercury cation Dimethylmercury


Space For Rough Work

Paper-III 16
J-89-16