PAPER-II
ENVIRONMENTAL SCIENCES


1. In term of atmospheric residence times, identify the correct sequence

NO CH>CHBr>CF>NO
x433 334x
CHBr>NO CF>NO >CH>CHBr
3x34 4 x43
2. The surface winds generally blow from the east in the areas over

Tropical Equator zone Midlatitudinal zone


High latitudinal zone Subtropical zone


3. Period (epoch) associated with the interference of human beings with nature is termed as

Eocene Miocene


Anthropocene Holocene


4. The harmonic mean of the number 10 and 20 is

2.51 6.25


8.57 2.857


5. Choose the correct statement among the following

The upper asymptote of the sigmoid curve of a population represents carrying capacity.


In form of population growth, the equilibrium level is not imposed by environmental factors.


All population growth forms are independent of environment.


In shaped growth curve, a relatively un-restricted growth suddenly halt only due to diapause.


6. Trophic relationship between an arbitrary number of species can best be explained using

Leslies matrix model


Lefkovitch matrix


Generalized Lotka-Volterra equation


Box model


7. The length of six earthworms used in an experiment are 5.37, 5.11, 6.42, 7.26, 3.99 and 2.6. Corresponding weight are 5.88, 6.35, 8.11, 8.36, 4.40 and 3.5 respectively. The relationship between length and weight of the earthworms is

-vely correlated +vely correlated


non-correlated insignificantly correlated


8. The geometric mean of the number 4 and 16 is

6 3


4 2


9. Mercury is particularly hazardous to the human health because

As a pure metal it is soluble in water, hence can easily be absorbed through drinking water.


It is light and volatile and so is widely dispersed through the environment.


It bioaccumulate high up in the food chain.


It can cause serious impact by physical contact.


10. According to the Public Liability Insurance Act, 1991, the inquiry on an application for relief is conducted by

C.E.O. Session Judge


Collector Police Commissioner


11. Discarded paint drums, pesticide cans, CFL bulbs, tube lights, expired medicines, broken mercury thermometers, used batteries etc., generated at the household level are collected as

Household dry waste e-waste


Domestic hazardous waste Composite waste


12. Which one of the following is a Schedule-I animal of the Wildlife (Protection) Act, 1972

Ferret Badgers Himalayan Crestless Porcupine


Bengal Porcupine Fishing Cat


13. The effluent and emission standards for industries have been notified under

The Environment (Protection) Act, 1986.


Motor Vehicle Act, 1988.


The Air (Prevention and Control of Pollution) Act, 1981.


The Water (Prevention and Control of Pollution) Act, 1974.


14. Which one of the following does not belong to the EIA process

Establishing the baseline environmental status.


Identification, prediction and assessment of environmental impacts.


Suggesting the mitigation and compensation measures.


Implementation of EMS auditing procedures.


15. In India, the validity of EIA clearance period for a mining project is

10 years 20 years


5 years 30 years


16. According to EIA notification of 2006, which category of projects does not need EIA clearance

Category B2 Category B1


Category A Category A and B1


17. The mitigation measures in EIA should include

Avoiding the impacts


Rectifying the impacts


Not compensating for the impacts
Choose the correct answer



only and only


and only and


18. Ministry of Corporate Affairs enhanced the scope of CSR activities in Clean Ganga Fund set-up by the Central Government for rejuvenation of the river Ganga vide notification made in the year

2013 2011


2015 2014


19. In open oceans, a permanent thermocline normally occurs at a depth of

100 200m 200 400m


500 800m 800 1100m


20. A certain type of coal is burnt at a rate of 0.5 kg/s. If the sulfur content of the coal is and of sulfur remains in ash, how much sulfur dioxide is formed per day

4104 kg/day 7776 kg/day


1800 kg/day 3600 kg/day


21. Given below are two statements. One labelled as Assertion and the other labelled as Reason
Assertion On combustion, natural gas produces more NOthan coal.
x
Reason Natural gas burns at a relatively high temperature than coal.
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.


22. Given below are two statements. One labelled as Assertion and the other labelled as Reason
Assertion Measurement of noise by a sound level meter are almost universally expressed in dB(A).
Reason scale represents flat frequency response of healthy persons to an auditory stimulus.
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.


23. Groundwater pollution through chemical contamination in Ganga-Brahmaputra delta region are primarily due to

Chromium, Lead, Arsenic Arsenic, Fluoride, Nitrate


Cadmium, Mercury, Iron Nickel, Zinc, Manganese


24. With respect to water content identify the correct sequence of various types of coals.

Lignite Sub-bituminous coal Anthracite


Sub-bituminous coal Lignite Anthracite


Lignite Anthracite Sub-bituminous coal


Anthracite Lignite Sub-bituminous coal


25. In India, target for generating electric power from small hydropower projects by the year 2022 is

5 GW 10 GW


50 GW 500 GW


26. The band gap in GaAs solar cell is

eV eV


eV eV


27. For a given energy and duration of exposure, the radioactivity associated with which of the following is more harmful in biological terms

X-rays Fast neutrons


Fast protons Heavy ions


28. Given below are two statements. One labelled as Assertion and the other labelled as Reason
Assertion The main greenhouse gases other than CO2 have global warming potentials much higher than that of CO2.
Reason They absorb shorter wavelengths between 7 µm and 13 µm which overlap with atmospheric window.
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.


29. Which among the following wetlands are under Montreux Record

Chilka Lake Keoladeo National Park


Tso Moriri Nal Sarovar


30. International year of Desert and desertification was observed in

1996 2006


1999 2009


31. In longitudinal zonation of stream, Rhithron refers to

Sédimentation accumulation zone Head water zone


Sediment deposition zone Meandering zone of the river


32. Habitat fragmentation in a forest ecosystem leads to

Reduction of species diversity


Increase in species diversity


Increase the number of habitat patch


Increase the connectivity between fragments
Choose the correct answer



and only and only


and only and only


33. Consider the following four statements and choose the correct statement

Warm temperature lakes are monomictic.


Warm tropical lakes are polymictic.


High altitude lakes are amictic.


Deep tropical lakes are oligomictic.
Choose the correct answer



and only and only


and only and


34. Which one of the following type of faults is likely to be connected with the most dangerous earthquakes

Transform Strike-slip


Reverse dip-slip Normal dip-slip


35. The drainage which has streams flowing outwards in all directions from a central elevated tract is called as

Dendritic drainage Parallel drainage


Trellis drainage Radial drainage


36. The largest fresh water lake of the world is

Lake Victoria Lake Superior


Lake Baikal Great Bear Lake


37. For depiction of gradation in slope, which of the following method is used in GIS

Raster GIS Vector GIS


CAD CAM


38. Which of the following National Parks are declared as Tiger Reserve by National Tiger Conservation Authority of India in 2015

Kanha and Ranthambhor National Parks


Sariska and Nagarahole National Parks


Dudhwa and Periyar National Parks


Kudremukh and Rajaji National Parks


39. A species selected to represent an environmental cause and symbol for a defined habitat is called

Flagship species Umbrella species


Keystone species Indicator species


40. Intermediate disturbance in a community result in

Maximum number of species


Minimum number of species


Average number of species


Decrease the number of species


41. Access to genetic resources and the fair and equitable sharing of benefits arising from their utilization was the main objective of

Earth Summit Millennium Development Goal


Nagoya Protocol Montreal Protocol


42. Reducing Emission from Deforestation and Forest Degradation in developing countries covers activities of

Reducing emission from deforestation


Reducing emission from forest degradation


Conservation of forest carbon stocks


Sustainable management of forests
Choose the correct answer



and only and only


and only and


43. Commercial vermicomposting was done by which of the following earthworm

Lumbricus terrestris Dendrobaena rubidus


Eisenia fetida Haliodrilus oculantus


44. Which aquatic macrophyte can be considered as invasive alien species

Lotus Alligator weed


Water ferns Duck weed


45. Keeling curve presents the yearly variations in the concentration of

Ozone Methane


Sulfur dioxide Carbon dioxide


46. 3.0 × 1018 molecules of NOare present in 1.5 × 1025 molecules of air at 25 °C and 1.0
2
atmosphere pressure. Calculate the concentration of NO2 in ppb.


20 200


5000 2 × 10-7


47. Which one of the following is not an organochlorine insecticide

Aldrin Aldicarb


Chlordane Endosulfan


48. Out of vanadium, molybdenum and iron, the metals involved in nitrogenase enzyme in nitrogen fixation in soil is/are

vanadium and molybdenum only vanadium, molybdenum and iron


molybdenum only vanadium only


49. The dominant carbon dioxide species in sea water in equilibrium with CO2 is

CO2(g) CO2.H2O


HCO


CO2-
3 3
50. The forest in oxisol is

Tropical rainforest with wet and hot climates.


Temperate grassland with hot summer and cold winter.


Evergreen forest with cold climate.


Temperate deciduous forest with hot summer and cold winter.


Space For Rough Work