PAPER-II ENVIRONMENTAL SCIENCES

ENVIRONMENTAL SCIENCE Paper II

1. Across the boundaries of a closed thermo dynamical system

matter flows but the energy doesn't.

energy flows but the matter doesn't.

both energy and matter flow.

both energy and matter do not flow.

2. The largest soil group in India is of

Red soil

Black soil

Sandy soil

Mountain soil

3. Sustainable development is about

Social justice and equity

Avoiding depletion of non­renewable resources

Environmental protection

All of the above

4. The mixing height is maximum in the

morning

noon time

evening

mid-night

5. Synoptic scale in meteorology is of the order of

100m

1km

10km

1000km

6. Polychlorinated biphenyls (PCBs) are known to cause

deformities in foetus

nervous disorders

liver and stomach cancer

All of the above

7. Match the List I and II and select the correct answer from the codes given below the lists

List I List II (Measured items)


XRF 1. Functional groups

Nephelometry 2. Elements

IR spectroscopy 3. Turbidity

Gas chromato-graphy 4. PAH

Codes




4 2 3 1

1 3 4 2

3 2 4 1

2 3 1 4

8. An antibacterial chemical present in wood smoke is

Formaldehyde

Cellulose

Acetone

Methane

9. Microfilteration generally employs

thin polymer film with uniform pore size and a high pore density

thin microfilm with smaller pore size and low pore density

thin micro-bioplastic with regular pore size and a high pore density

thin membrane filter with uniform pore size and a high pore density

10. In natural waters with pH near 7.0, the redox potential lies between

.81 Volt and 0.85 Volt

0.41 Volt and 0.06 Volt

0.41 Volt and 0.82 Volt

0.06 Volt and 1.23 Volt

11. BIOCLAIM® a metal biosorbent includes microorganisms, mainly bacteria of the genus


Bacillus

Escherichia

Pseudomonas

Rhizobium

12. Saccharomyces cerevisae is a

Alga

Bacterium

Protozoan

Yeast

13. Method used to select growth of a specific type of bacteria in microbial ecology is

FISH test

Enrichment culture

Biofilms

DNA sequencing

14. About half of earth's photosynthesis is carried out by

Cyanobacteria

Rainforest flora

Protists

Marine phytoplankton

15. Ramsar Convention is associated with

Forest conservation

Soil conservation

Wetland conservation

Wildlife conservation

16. In tropical cyclones, mean wind speeds are

between 10 to 20 knots

between 20 to 40 knots

between 40 to 60 knots

greater than 63 knots

17. Assertion

Processes involving living organisms are associated with sedimentation which is more closely linked with hydrosphere and the atmosphere.

Reason In the biosphere geochemical differentiation takes place through the metabolic action of organisms.

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.

18. A mountain slope of slope angle 45° corresponds to which of the following in percent slope notation

10

50

45

100

19. Elastic-Rebound Theory suggests that an earthquake results due to change in the state of rock from

Elastic to brittle

Elastic to plastic

Plastic to elastic

Elastic to undeformed

20. How many Universal Transverse Mercator zones are there on earth

45

50

60

90


21. Match list I and II. Identify the correct answers using the codes given below the lists
List I List II

Noamundi Mines 1. Gold ore
Khetri Mines 2. Pb Zn ore
Zawar Mines 3. Iron ore
Kolar Mines 4. Copper ore

Codes

2 4 1 3

1 3 2 4

3 4 2 1

4 3 1 2

22. The second generation resource for biofuel production.

Coal

Petrol

Corn and molasses

Crop residues

23. The maximum temperature that can be obtained in a flat plate box type solar collector is between

50 °C 90 °C

100 °C 150 °C

200 °C 250 °C

45 °C 50 °C

24. At present, the total installed capacity of power generation from all sources in India is between

60 GW to 90 GW

30 GW to 60 GW

100 GW to 200 GW

200 GW to 250 GW


25. Which of the following materials is not used as moderator to slow down the fast neutrons produced in a nuclear reactor

Water

Heavy water

Graphite

Lead

26. If equivalent sound pressure level of 90 for 8 hours represents 100% dose of noise, noise dose of 25% implies

87 for 4 hours

84 for 4 hours

22.5 for 8 hours

84 for 2 hours

27. Maximum photodissociation of NO2 molecules in atmosphere occurs due to solar radiations in the wavelength range

300 nm 400 nm

400 nm 500 nm

500 nm 550 nm

550 nm 600 nm

28. The time scale for vertical transport of pollutants in the troposphere is typically

minutes

minutes to hours

days to weeks

years

29. For domestic drinking water supply the total dissolved solids should not exceed

250 ppm

500 ppm

600 ppm

100 ppm

30. Which of the following sewage treatment relies on removing the suspended solids from water

Primary treatment

Secondary treatment

Tertiary treatment

Breaking down of organic matter

31. The concept of Environmental Impact Assessment originated from

Findings of a Royal Commission investigating the 'Weald Iron Mills and Furnaces' in Southern England in 1548.

Report of the 'Volta Preparatory Commission' (HMSO, 1956).

Discretionary guidelines of the National Environmental Policy Act in 1971.

Report of copper mining in Puerto Rico commissioned in February 1967.


32. Assertion Impact Assessment enables the planners and decision makers to think carefully about the project proposals. Reason

Impact Assessment can help in ensuring that planners and decision makers are more accountable for their actions.

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.

is false, but is true.


33. Eco-auditing focuses on

Assessment of actual effects of existing activities

Assessment of project decisions

Policy assessment

Post project assessment

34. Match the list I and II. Select the correct answer using the codes given below the lists

List I List II

Ad-hoc Method Gives some measurements and describes the impacts

Checklist Method Limited value for scoping
Overlay Method Used for screening and for impact assessment, especially for impact identification

Matrix Method Acts as an aid in screening sites or routes for impacts



Codes










35. Eco-labelling is governed by

ISO 14001

ISO 14020

ISO 14010

ISO 14040

36. The predominant gas emitted during the early life of a MSW landfill is

CO

CO2

CH4

VOCs

37. Black foot disease is caused by

excess of fluoride in water

deficiency of iodine in water

excess of arsenic in water

excess of iodine in water

38. The Water Cess Act 1977 was amended in the year

1991

1978

1988

1987


39. Public Liability Insurance Act was enacted in which year

1991

1986

1990

1984

40. In a multiple regression model alpha ß1iXi+ ß2X2i+ ß3iX3+ Ei if i the number of degrees of freedom required for determining the t-value at level of significance

N 3

N 2

N 4

N 1

41. For large population sizes, the t-distribution approaches

Normal distribution

Poisson distribution

Binomial distribution

Chi-square distribution

42. Lotka-Volterra Model deals with

Prey-Predator interactions

Predicting CO2 concentrations

Study of pollutant concentration in river streams

Study of pollutant concentration in atmospheric environment

43. Eigen values of the matrix [111 111 111] are


1

1

1

3

44. The second moment of the data set 10 is

6

378

45.2

22.51

45. In Gaussian dispersion model, the effective stack height is taken as sum of physical stack height and the plume rise deltaH. The plume rise varies with stack velocity VS in the following manner

deltaH alpha VS

deltaH alpha VS2

deltaH alpha VS

deltaH alpha VS 3/2

46. Assertion(A) A large number of districts in States of India have become water stressed.

Reason(R) The population in India has increased appreciably since independence.

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.

is false, but is true.

47. Copenhagen Conference on climate change was held as a sequel to

Montreal Protocol

Ramsar Convention

Basel Convention

Kyoto Protocol

48. Under the Climate Change Action Plan of Government of India which of the renewable source of energy has been identified as a priority for exploitation

Solar energy

Wind energy

Tidal energy

Geothermal energy

49. International Ozone Day is celebrated on

21st April

5th June

22nd April

16th September

50. Sardar Sarovar Dam is built on

Sabarmati river

Narmada river

Tapti river

Chambal river