1. Assertion Biosphere constitutes an excellent life-support system which is sustainable and can fulfil all human needs.

Reason The size and productivity of the Biosphere is limited by availability of water, nutrients and environmental conditions.

Identify the correct code

Codes

(A)Both and are true and is the correct explanation of


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


is true but is false.


is false but is true.



2. Geostrophic wind occurs when pressure gradient force balances

(A)Coriolis force


(B)Frictional force


(C)Centripetal force


(D)Coriolis and frictional force together



3. Scales of Meteorology are in the following order starting from the least

Micro-, Meso-


Meso-, Micro-


Macro-, Micro-


Meso-, Macro



4. When the full potential of physical, chemical and biological factors, a species can use if there is no competition, it is called

(A)Fundamental niche


(B)Ecological niche


(C)Realized niche


(D)Competitive exclusion



5. The uppermost zone of atmosphere of earth, where shortwave ultraviolet radiations are absorbed, is

(A)Troposphere


(B)Stratosphere


Mesosphere


(D)Thermosphere



6. Which of the following oxides of nitrogen is the major air pollutant released from auto mobile exhausts



N2O


(C)NO2


N2O3



7. Match List I with List II which contains pollutant gases and their threshold (safe limit) values as per WHO standards

List I List II
(Pollutant gas) (Thresholds)

a. CO i. 2 ppm

b. SO2 ii. 50 ppm

c. NO iii. 0.08 ppm

d. PAN iv. 25 ppm Identity the correct code

Codes
a b c d

iii i iv


ii i iii


i iv iii


(D)iii iv ii i



8. The band labelled as UV-C which is lethal to micro-organisms is

(A)0.29 0.32 .m


(B)0.2 0.29 .m


(C)0.17 0.2 .m


(D)0.07 0.21 .m



9. Which of the following species in the atmosphere is called atmospheric detergent

(A)Chlorine radical


(B)Hydroxyl radical


(C)Methyl radical


(D)Ozone radical



10. The POH of a 0.001 M solution of HCl is




10





13



11. Identify the pair (element-health effect) which is correctly matched

(A)Lead Methaemoglobinemia


Arsenic Kidney damage


Mercury Nervous disorder


PAN Hypoxemia



12. Which of the following organisms can act as primary consumer, secondary consumer, tertiary consumer or scavenger in different types of food chains

Raven


(B)Tiger


(C)Snake


(D)Phytoplanktones



13. The tendency of biological systems to resist change and to remain in a state of equilibrium is called

(A)Homeostatis


Feedback mechanism


Ecological efficiency


(D)Carrying capacity



14. If different categories of threatened species are written in a sequence, what is the correct order

Extinct . Vulnerable . Rare . Endangered


(B)Vulnerable . Rare . Endangered . Extinct


(C)Vulnerable . Rare . Extinct . Endangered


(D)Rare . Vulnerable . Endangered . Extinct



15. Which of the following is not a type of ex situ conservation method

Botanical garden


(B)Zoological park


(C)Wildlife sanctuaries


(D)Gene banks



16. As a consequence of succession the P/B ratio (Gross production Standing crop biomass) is changed. It is

(A)high during developmental stages and low at mature stage.


(B)low during developmental stages and high at mature stage.


1 or 1 at developmental stages and approximately 1 at mature stage.


(D)remaining unchanged at all stages.



17. Preparation of hazard-zoning map in case of landslide prone regions involves comprehensive investigation of

(A)details of structural and lithological settings.


(B)geomorphic features relating to instability of slopes.


(C)seismicity pattern of the region.


(D)all of the above.



18. If ap specified value of peak acceleration, N mean rate of occurrence of earthquake per year,tep time interval of consideration (exposure period) and Fap probability that an observed acceleration is less than or equal to ap, then the cumulative probability distribution of peak acceleration for epoch dependent seismic hazard map is given by which formula

Fmax tep exp


Fmax exp . tep


Fmax tep= exp Fap)N}


All of the above



19. Assertion In oceans, Na has the longest residence time, within an order of magnitude of the age of the oceans.

Reason The long residence time of Na reflects a lack of reactivity of sodium in the marine environment by not being readily incorporated in the common sedimentary minerals, nor being removed by biological reactions.

Identify the correct code

Codes

(A)Both and are true and is the correct explanation of


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


is true, but is false.


is false, but is true.



20. According to Goldieh the decreasing order of stability of following minerals of igneous rocks towards weathering is

(A)Muscovite Quartz Potash feldspar Biotite


(B)Biotite Potash feldspar Muscovite Quartz


(C)Quartz Muscovite Potash feldspar Biotite


(D)Potash feldspar Quartz Muscovite Biotite



21. In universal polar stereographic coordinate system the eastings and northings are computed using which projection method

(A)Polar aspect stereographic projection


(B)Non-polar aspect stereographic projection


(C)Polar aspect mercator projection


(D)Non-polar aspect mercator projection



22. Pitchblende is an ore of

(A)Nickel


(B)Chromium


Molybdenum


(D)Uranium



23. Copper is classified according to its geochemical affinity as

(A)Siderophile element


(B)Chalcophile element


(C)Lithophile element


(D)Atmophile element



24. If is the fractional wind speed decrease at the wind turbine, the maximum extraction of power from the wind occurs when is equal to




1/3





3/5



25. In the following fusion energy reaction D T 0n1 X identify X




H2


He3


He4



26. Assertion Natural gas is a very attractive ecofriendly fuel.

Reason It produces few pollutants and less carbon di­oxide per unit energy than any other fossil fuel on combustion.

Identify the correct answer

Codes

(A)Both and are true and is the correct explanation of


(B)Both and are true and is not the correct explanation of


is true but is false.


is false but is true.



27. Assertion Solar photovoltaic cells are expensive.

Reason Solar photovoltaic cells are fabricated from crystalline silicon and operate only at 10-12% efficiency.

Identify the correct answer

Codes

(A)Both and are true and is the correct explanation of


(B)Both and are true and is not the correct explanation of


is true but is false.


is false but is true.



28. Human activities add 7-9 gigatons of CO2 per annum into the atmosphere. Major contributor to this CO2 is

(A)Burning of fossil fuels


(B)Clearing of forests for agriculture


(C)Fermentation industries


(D)Cement industries



29. According to WHO, maximum permissible level of chlorides in drinking water is

(A)100 mg/L


200 mg/L


(C)600 mg/L


800 mg/L



30. Wilting coefficient of a loam represents

(A)the minimum water content of the soil at which plants can no longer obtain water


(B)water holding capacity


(C)capillary water


(D)field capacity



31. Which one of the following techniques can be used for determining the level of cadmium in soil

Visible spectrophotometer


(B)Atomic Absorption Spectrophotometer


(C)XRD


spectrometer



32. For noise control in auto mobiles, the exhaust muffler attenuates sound by

(A)Absorption


(B)Destructive interference


(C)Reducing velocity of hot gases


(D)Absorption and destructive interference



33. Five particles 2-3 new can be effectively collected from industrial stacks by

(A)Fabric filters


(B)Cyclone separators


(C)Venturi scrubbers


(D)Settling chambers



34. Soil fulvic acids are strong chelators of

(A)Iron


(B)Iron


(C)Both Iron and Iron






35. Natural source of polycyclic aromatic hydrocarbons (PAHs) is

(A)Root exudates


(B)Anaerobic bacteria


(C)Aerobic bacteria


(D)Grass fires



36. Match the with the 'activity' in Environmental Audit. Identify the correct answer from the codes given below the lists

List I List II
(Phase) (Activity)

a. Pre-Audit i. Human input-output analysis in relation to economy

b. On-site Audit ii. Reviewing audit-check lists

c. Post- Audit iii. Records/ Documents Review

Codes
a b c

iii i


iii ii


ii iii


(D)iii ii i



37. Match the Impact Assessment Methodologies (List II) with the corresponding environments (List I). Identify the correct answer from the codes given below the lists.

List I List II

a. Air i. Ecosystem models

b. Biological ii. Gaussian models

c. Water iii. Mass balance approach

d. Land iv. G.I.S.

Codes
a b c d

i iii iv


ii iv iii


(C)iii iv ii i


iii i ii



38. Public hearing is conducted

(A)Prior to site selection


(B)Prior to approval of Terms of Reference


(C)After preparation of EIA


(D)After environmental clearance



39. IAIA stands for

(A)International Association of Impact Assessment


(B)Indian Association of Impact Assessment


(C)International Assembly of Impact Assessment


(D)Indian Assembly of Impact Assessment



40. Municipal Solid Wastes (MSWs) have the heating value typically in the range

to 12,800 kJ/kg


(B)1000 to 2500 kJ/kg


(C)1780 to 2830 kJ/kg


(D)530 to 780 kJ/kg



41. The Motor Vehicles Act 1938 was amended in which year

(A)1972


1980


(C)1988


1986



42. The following statistical test is used to ascertain whether there is significant difference between the variances of two sets of observations

(A)t-test


(B)F-test


(C)Chi square test


(D)Regression



43. The population of an ecosystem obeys the growth equation dN/ dt alfa N beta N2 where and are constants. The maximum sustainable yield of this ecosystem will be

alfa beta N


alfa/beta


alfa/2beta


alfa2/beta



44. The geometric mean of the following data 10, 25, 10 is





5


(C)12.25

49

45. If the mean and variance of a Poisson distribution are new and sigma, then the following relation is correct.

sigma new 2


sigma2 new


sigma root new


sigma 2 new



46. In the Gaussian Plume Model, the plume rise varies with Buoyancy Flux Parameter F as





F 1/2


1/3


F 1/4



47. United Nations Conference on Environment, also termed as Earth Summit, was held in 1992 in which city

(A)Rio de Janeiro


(B)Kyoto


(C)Stockholm


Copenhagen



48. In which part of India, the tropical Western Ghats are situated

(A)Punjab


Rajasthan


(C)Gujarat


Kerala



49. Variety of different species, genetic variability among individuals within each species and variety of ecosystems constitute the so called

(A)Species diversity


(B)Genetic diversity


(C)Biological diversity


(D)Ecological diversity



50. Baba Amte was the leader of

(A)Appiko Movement


(B)Chipko Movement


(C)Narmada Bachao Andolan


(D)Tehri Dam Movement