bhu pet 2010 m.sc tech in enrironmental sc $tech

8/21/2019 BHU PET 2010 M.sc Tech in Enrironmental Sc $Tech

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Question Booklet No ....................................

( To be filled up by the candidate by blue I black ball point penRoll No.Roll No. (Writethedigits n words) .............................................................: ...................................................................................Serial No. of Answer Sheet.. .............................Day and Oate ..._............................................

(Signa/ure of nvigila/or)- - - - - - - . - , - - - - - - - - - - - - - - = = = = ~INSTRUCTIONS TO CANDIDATES

(Use only blue/black ballpolntPM in the space above and on both sides of the Answer Sheet)1. Within 10 minutes of the issue of the Question BO':.lklet, check the Question Booklet to ensure that it contains

all the pages in correct sequence ana that no page/question is missing in case offautty Question Booklet bringit to the notice of the Superir.tendent/lnvigilators immediately to obtain a fresh Question Bookle t

2.. Do not bring any loose paper. written or blank. inside the Examination Hall except the Ad,, , Card without itsenvelope.3. A separate Answer Sheet is given. I t shouldnot btl fo/dsd or mutllaffld. A stlCOlld Answw $h8tlt shall not

be provided. Only the AnsW8I' $h8tlt will btl flvaluatBd.4. W[ite your RollNUmbfJr andStn/a1 Numberof he AnsW9I ShHt by ptNr in the space provided above.5. On the front psg of the AnsWIN ShBet wrtftl by pen your RoI NumbtN'ln the space providedat thtl top,

and by darksning the eire/tIS at tllB bottom. A/so, whfHfI ' f lNappIlcabls. WfIft1 the OUBSffon Book/fit Numberand thtl S8t NumbBr In approprfaf8 plactlS.

6. No overwriting is allowed in the entries of Roll No., Question Booklet No. and Set No. (if any) on OMR sheetand Roll No. and OMRsheet No. on the Question Booklet.

7. Any changes in the aforesaid entries is to be verified by the invigilator, otherwise it will betaKen as unfair means.B. Each question in this Booklet is followed by four altemative answers. For BaCh quBSflon, you BrtI to rtICOrrithB colTtlCt option on thtl AnsWBl' ShHt by dark8nlng the appropriate clrc e In the COITfISPonding rowof thfl Answer ShfHIt, by ptHr as ,tloned In the guldellntJS glWIII on thfl flrst page of the AnsWtlf Sh8tlt.9. For each q u ~ s t i o n darken only one circle on the Answer Sheet If you darken more than one

Circle or darken a circle partially, the answer will be treated as incorrect10. Nottl that thtl answer once flllsd In Ink cannot bB changed. If you do not wish to attempt a question leave

all the circles in the corresponding row blank (such question will be awarded zero marks).11. For rough work, use the inner baCK page of the title cover and the blank page at the end of this Booklet.12. Deposit both the Ousstlon Booklflt and tht l AnswfH.Bhfl8t at the end Qf the Test.13. You are not permitted to leave the Examination Hall until the end of the Test.14. If a candidate attempts to use any form of unfair means, he/she shall be liable to such punishment as the University

may determine and impose on him/her.[ f.' T fR\ t 31f. im ' ' 'Jl R 1V;Total No. of Printed Pages : 24

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No. of Questions/m;jit m u : 150Time f f1T [: 20 hours ~2 [Full Marks I ~ 450

Note : (1) Attempt as many questions as you can. Each question carries3 (Three) marks. One m rk will be deducted for eacb incorrectanswer. Zero mark will be awarded for each unattemptedquestion.

mT


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3 Which of the following aqueous solutions will conduct quitc well anelectric current?1) Sugar 2) HCI

4. I ppm is equal to1) 1 mg/L in water3) 1 g/L in water

5. Pascal Pa) is a unit of

3) Glycerol

2) l ~ g L in water4) 1 pg/L in water

1) Density 2) Concentration 3) Mass

4) Pure water

4) Pressure6 Which of the following elements is most abundant n earth s crust?

1) Iron 2) Aluminium 3) Calcium7. Granite is n example of

1) Igneous rock3) Metamorphic rock

2) Sedimentary rocks4) Detrital rock

8 Which of the following is not a group of clay minerals?1) Montmorillonite 2) lllite 3) Dolomite

4) Sodium

4) Kaolinite9. Which of the following represents the most heavily leached soil type?

1) Laterite 2) Podzol 3) Mollisol10 Emissions from volcanic eruptions will cause

1) Cooling of earth2) Warming of earth3) No change in temperature of earth4) Cooling-warming cycles on the earth

2 )

4) Aridisol

Continued)

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11 \Vhich of the following is not correct?(1) Proton has a unit charge +1(2) Proton has a mass number 13) Electron has a mass number 04) Neutron has a unit charge. - 1

IOP 293 9

12 \Vhich of th c following is the latest period in Coenozoic era representingorigin of humans?1) Cretaceous 2) Triassic 3) Tertiary (4) Quaternary

13. Angstrom A) is equal to2) 1O- 8 m

14. Which of the following forms in a graph gives an accurate indication ofcorrelation between two variables?1) Histogram 2) Pie-chart3 ) Regression line (4) Scatter diagram

15. The age of earth is estimated to be1) 4.6-4.9x la yrs 2 ) 4.6-4.9x IO yrs3 ) 4.6 - 4.9 x 1O 0 yrs (4 ) 4.6 -4.9 x 10]2 yrs

16 Formation of deep cavities n soil due to running water is known as1) Sheet erosion

(3) Gully erosion(2) Rill erosion(4) Slip erosion

17. Which of the following is an important ore of aluminium?(1) Haematite (2) Bauxite (3) Magnetite (4) Lignite

3 J Tum Ovw-

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18. The type of classification of pIants and animals based on evolutionaryrdationship is called1) Natural classification 2) Artificial classification

(3) Phylogenetic classification (4) Phonetic classification19 The spring tides arises due to forces of moon and sun acting in the same

line on every1) Full moon day

(2) New moon day(3) Full moon day and new moon day(4) Spring scason

20. The soil formed from the material transported through gravity is calledl) Aeolian (2) Colluvial (3) Alluvial (4) Glacial

21 The hottest geographical zone out of the following is(1) Torridzone(3) South temperate zone

2) North temperate zone(4) Frigid zone

22 The major reservoirs of phosphorus occurs nl) Plant biomass

(3) Agricultural fields(2) Sedimentary rocks(4) Atmosphere

23 The depth of oceans is measUred in1) Meters (2) Feet (3) Fathoms (4) Nautical miles

24 Archaeopteryx is a connecting link betweenI) Fishes and Amphibians

(3) Reptiles and Birds(2) Amphibians and Reptiles(4) Birds and Mammals

I 4 ) ontinued J

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25 According to S1 system the unit of energy isI) Watt (2) Joule 3) Newton 4) Calorie

26 Genetic material in Tobacco Mosaic Virus TMV) isI) RNA 2) DNA 3) Pentose sugar 4) Purines

27. Which of the following are called suicide bags of a cell ?1) Lysosomes (2) Ribosomes (3) Liposomes (4) Oxysomes

28 Muramic acid is found n the cell wall of(1) Flowering plants(3) Algae

(2) Gymnosperms4) Bacteria

29. Excretory organs of earthworms are called asl) Malpighian tubules

(3) Kidneys(2) Contractile vacuoles(4) Nephridia

30. Which of the following is a true fish?(1) Starfish(3) Catfish

2) Cuttlefish(4) Silverfish

31. Life cycle of vascular plants is dominated by1) Diploid stage

(2) Haploid stage(3) Sporophyte stage(4) Diploid and Sporophyte stage

I 5 ) TuroOver)

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32. Which of the following statements is not true ?I) Red. brown and green algae are mostly aquatic

(2) Bryophytes are non-vascular plants(3) Ferns and horse tails are vascular plants(4) Gymnosperms are the simplest vascular plants

33. Which of the following has radial and bilateral symmetry?1) Cnidarians (2) Arthropods (3) Echinoderms (4) Molluscs

34 The defining features of viruses are1) DNA core and protein coat

(2) Nucleic acid core and protein coat(3) DNA core and lipid envelop{4) Nucleic acid core and plasma membrane

35. Which of the following is not characteristic of the animal kingdom?

1) Multicellularity; cells form tissues. organs. 2) Exclusive reliance on sexual reproduction(3) Embryonic development during life cycle

, (4) Motility at some stage of the life cycle36. Which of the following is biologically mediated wastewater treatment?

1) Primary treatment(3) Tertiary treatment

(2) Secondary treatment(4) Advanced treatment

37. Which of the following is the ecomark of India ?I) Peacock

(3) Lotus flower(2) Wooden flute(4) Earthen pitcher

( 6 , ontinued

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38 Who is the environmentalist associated with ~ h i p k o movement ?1) Medha Pateka

(3) Rajendra Singh(2) Anil Agarwal(4) Sunderlal Bahugnna

39. Sea birds playamajor role in cycling ofwhich of the following nutrients?1) Nitrogen (2) Phosphorus (3) Carbon (4) Sulphur

40. Eutrophication of lakes and ponds is caused by(1) Nitrates and Phosphates(3) Nitrates and Carbonates

(2) Calcium and Magnesium(4) Phosphates and SuIphates

41. Which of the fqllowing heavy metals in the industrial eflluents causedMinamata disease?(1) Mercury (2) Lead (3) Cadntium (4) Nickel

42 MethaemogIobinemia (blue baby syndrome) is caused due to which ofthe following type of water pollution?I) Phosphate pollution

(3) Arsenic pollution(2) Mercury pollution4) Nitrate pollution

43 Overgrazing of grasslands y cattle often results n(1) Sustained productivity of soil(2) Desertification(3) Retention of useful species(4) Salinization

( 7 J Tum Over)

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44 Which of the following gives an econonuc value for environmental. 0Impacts

I) Battelle Evaluation System2) Sorensen network analysis

(3) Hedonic Price method(4) Leopold Matrix method

45 Bhopal gas tragedy occurred due to leakage of(1) MIC (2) DDT (3) SO,

46 Carrying capacity of a system in an index ofl) The threshold of stress on the environment

(4) Dioxins

2) The adverse impact that some activity has on the environment(3) The input-output analysis of project activity4) The impact assessment of the environment

47. Which method is suitable for nitrogen and phosphorus removal fromwastewater?I) Primary sedimentation

(2) Aerobic secondary trealroent(3) Anaerobic secondary trealroent4), Tertiary treatment

48 Select the correct pair(1) Jacob Monad Operon Model(2 ) Robert Hook - Nucleus3 ) Robert Brown - acterialtransfonnation

(4) Griffith - Cell( 8 1 Continued

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49 The molarity of one liter of water is1) 1 M [2) 18 M [3) 55.5M [4) 273.15M

50 Which of the following is not a component of RNA?1) Thiamine [2 Guanine [3 Cytosine (4) Adenine

51 Progressive accumulation of some n o n ~ b i o d e g r d b l e chemicals throughthe food chain is known as1) Ecological balance[3 Trophic structure

2) Biological magnification[4) Biodegradation

52. Which of the following s correct about CFCs?1) These are toxic, unstable nd costly chemicals used n refrigeration

[2) These take a few hours to reach the stratosphere[3 These deplete moisture in the stratosphere[4) Thesc stay n the stratosphere for 65-110 years

53 Which form of mercury is toxic to us ?[1) Elemental form[3 Dimethylated form

[2 Monomethylated form4) Chlorinated forms

54. Permissible limits of BOD [EPA. 1986) for discharge of wastewater ininland surface water is1) 20 ppm [2) 30 ppm [3) 100 ppm (4) 250 ppm

55 Which of the following industries emits noxious mercaptans ?[1) Optical glass industry[2) Coir industry[3) Paper and pulp industry[4) Textile industry

( 9 ( TurnOver)

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56. Which activities are NOT prohibited in Coastal Regulation Zone CRZ)?l) Storage of hazardous wastes(2) Dumping of municipal waste3) Mining of sand and rocks

(4) Camping sites57. A country has 6.5 million population and its annual growth rate is 2 .

After how many years its population will become 13 million?l) IS years (2) 25 years (3) 35 years (4) S years

58. A saline-sodic soil showsl) High ESP. high pH

(3) High ESP. high EC59. Which combination s correct?

(1) Kaziranga National Park2) Daehigam National Park3) Keoladeo National Park

(2) High pH; high EC(4) High pH. high ESP. high EC

- Rajasthan- Jammu Kashmir- Orissa4) Nandan Kanan National Park - Assam

69. Which of the following is NOT true?1) Pyramid of energy is always upright2) Grazing food chain predominates in a shallow water system3) Energy flows in an ecosystem in a cyclic manner4) Organochlorine Pesticides in a food web tend to biomagnify

61 Wangari Maathai has won which prize/honour for environmentl) Nobel Prize 2) World Peace Prize3) World Awareness Prize 4) Honoured by the WWF

1 0 ontinued

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62. Which acid is associated with fertile soil ?1) Humic acid3) Nitric acid 2) Acetic acid4) Sulphuric acid

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63. Burning o fossil fuels drastically affects one o the following cycles1) NItrogen cycle3) Carbon cycle

2) Phosphorous cycle4) Water cycle

64. The Chernobyl disaster was caused by a1) Nuclear test2) Nuclear reactor accident3) Nuclear waste disposal leak4) Nuclear weapon accident

65 How does temperature change in the stratosphere with increasing height?1) It decreases 2) It increases3) t remajns the same 4) It keeps on fluctuating

66. Which o these is a hot spot o biodiversity?1) Deccan plateau3) Shivaliks

2) Western ghats4) Chilka

67 What is the source of energy in sun?1) Nuclear fission reactions 2) Nuclear fusion reactions3) Thermal reactions of gases 4) Thermal dissociation o gases

68. Permissible limits o NO, in residential areas 24h basis) as per NAAQSIS

1) 30l g/m3 2) 60llg/m 3) 80llg/m 4) 120l g/m3I Tum Over

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69. Which coefficient of correlation T) indicates the strongest correlationbetween two variables?I) 0.535 2) -0.550 3) -0.905 4) 0.885

70. Which is not a measure o dispersion?I) Range3) Mode

2) Quartile deviation4) Mean deviation

71. n a grazing food-chain the energy available to each successive trophiclevel isI) 50 of the preceding trophic level2) 10 of the preceding trophic level3) 90 of the preceding trophic level4) Equal to the preceding trophic level

72. Which of the following is NOT true for humus?1) I t is easily decomposable2) I t is a dark amorphous substance3) It contains fulvic acid4) It is an index of fertile soils

73. Which of the following is the main source oflly ash?1) Solar Power Plant3) Thermal Power Plant

2) Hydel Power Plant4) Nuclear Power Plant

74. Which form of coal has maximum calorific value?I) Anthracite 2) Bitumen 3) Lignite 4) Peat

12 J Continued

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75. Which of the following industries fall under green industry ?1) Sugar industry 2) Coir industry3) Vegetable oil industry 4) Instant Coffee industry

76. Which of the following is NOT true about arsenic?1) t is a component of some insecticides2) It attacks the SH group of enzymes

IOPI29319

3) Its presence in high concentration n groundwater causes severe skinlesions

4) Once inside the body it cannot pass out with urine77 Concentration of CO in vehicular exhaust is approximately

1) below 20 (2) 35 3) 50 4) above 7078. he size of the RSPM is

2) 15-20 micrometer1) Below 10 micrometer3) 23 micrometer 4) Above 25 micrometer

79 UV radiations arc filtered y ozone present in1) Troposphere 2) Stratosphere 3) Mesosphere 4) Thermosphere

80. Which of the following has the maximum global warming potential permolecule?1) Nitrous oxide3) Methane

2) CO24) CFCs

81. Which of the following fuels bums cleanest?1) Coal 2) Lignite 3) Petroleum

1 3

4) Natural gasTurnOver)

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Bl. The speed of wind required for running a wind mill should be minimumI) 5 km h 2) 25 kmlh 3) 35km/h 4) 40kmlb

83. Performance of Ocean Thermal Energy Convasioil depends on(1) Surface area of the ocean(2) Large Temperature difference between surface and bottom layers(3) Large pressure difference between surface and bottom layen4) Height of tide.

84. The reliability of Gaussian plume model is[I) 98 (2) 95 (3) 70 (4) 50

85. Which of the following particles has the maximum penetrating capacitythrough solids ?

(2) Beta particlesI) Alpha particles3) Gamma rays (4) Radiations in visible range

116 Increasing Carbon dioxide concentration in environment has theroOowing effccts[lJ Causes changes in rainfaO pattern2) Doesnt affect soil moisture3) Decr


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89. .Maximum OZDIIC depiction nCCUr in(2) Antarctic1) Arctic(3) Equator (4) Anywhc:rc onlbc globe

90. Westerlies arc the winds blowing from(1) Easllo West(3) West to East

(2) North to West4) We.t to South

91. The chemical formula of CFC12 i1) CF,Cl, 2) CFCl, (3) 0I F2

92. The major goal ofElA is best explained as( 1) Benefits of deve oprru:nt on the environment(2) Damage of development on the environment

(4) CHF,

(3) Residual beneficial impacbl of dc\'o1opment all the environment(4) Assessment of the balance between the bendibl aud c1a""'ll" of

evelopment on the environment93. In India EIA comes into force in

(I) 1972 (2) 1986 (3) 1994 (4) 200094. As per MoEF. 1994 gauttc notification, EIA is mandaImy for bow many

polluting Ictivities 7(1) 25 (2) 29 (3) 32 (4) 5

9S. Whit can be the mllllimum DO level of I water body 1I125'C?I) 8.2 rug/l

(3) 12.2 rug l(2) 9.1 mgII(4) 14.9 rug/l

I l' i )

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96 Which of the following has maximum albedo?1) Soil 2) Water 3) Vegetation 4) Snow

97 Solar constant of earth isI) 1 cal/crnz/min3) 3 cal/crn 2/min

2) 2 cal/cm2/min4) 4 cal/cm 2 /min

98. An isobaric surface is n invisible surface in the atmosphere on which1) Concentration of gases is everywhere same2) Temperature is ~ v r y w h e r e same3) Pressure is everywhere same4) Solar energy is everywhere same

99 The species on which existence ofa particular ecosystem depends is knownas1) Keystone species3) Endangered species

2) Endemic species4) Ecotone

100. Which bacterial genus plays a role in rnicrobialleaching of low-gradeores?I) Azotobacter3) Streptococcus

2) Thiobacillus4) Nitrosornonas

101. Which of the following is NOT one of the objectives of sludge stabilizaUoD

I) To reduce odour 2) To reduce sludge solids3) To reduce pathogens 4) To reduce phosphorus content

6 I Continued )

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102 What s breakpoint chlorination?I) The point after which the chlorine added s used for killing microbes2) The point after which the chlorine added s used for oxidation of

org nic m tter3) The point after which the chlorine added is used for ki11ingmicrobes

nd oxidation of org nic m tter4) The point after which the chlorine added is librated as free chlorine

103 Which one is a water borne disease?I) Schistosomiasis3) Cholera

2) Malaria4) Dengue

104 Which of the following is an example of x s tu conservation?I) Biosphere reserve3) Gene bank

2) Sanctuary4) Gene Farm

105 Expanding population s indicated by which age-pyramid?1) Pyramid shaped3) Urn shaped

106 Pick up the correct statement

2) Bell shaped4) Polygonal shaped

I) Obligate anaerobic bacteria flourish in the presence of oxygen.2) Facultative anaerobic bacteria flourish only in the absence ofoxygen.3) Facultative aerobic bacteria flourish n the absence of oxygen and

can also grow in presence of oxygen4) Facultative anaerobic bacteria flourish in the absence of oxygen and

can also grow n presence of oxygen107 The secondary treatment of wastewater s mediated mainly by

1) Bacteria 2) Mosses 3) Coagulants 4) Lichens17 Tum Over)

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108. Activated sludge s theI) Aerated sludge in the aeration unit2) Sludge settled in the humus tank3) Sludge in the secondary tank after aeration and rich in microbial

mass4) Sludge in the secondary tank after aeration and rich in nutrients

109. The popular disposal method of solid waste in India sl) Incineration 2) Landfill 3) Pyrolysis 4) Dumping

110. An important index of organic pollution n case of a stream isl) Colour (2) COD 3) Alkalinity 4) Turbidity

111. The maximum damage to the Taj Mahal s because of the gasU) CO, 2) CO 3) SO, 4) NOx

112. Which of the following pair s NOT correctly matched?l) BOD - Strength of sewage2) Methane - Product of anaerobic decomposition

(3) COD - Biodegradability of waste water(4) Nitrate - Methemoglobinemia113. Which of the following treatments reduces the salinity of the water?

I) Reverse osmosis(2) Electrodialysis(3) Flash mixing and sedimentation4) Freezing

114. Which of thefollowing pairs s correctly matched ?l) Lime soda process - Softening

(2) Nalgonda technique - Fluoride removal(3) Aeration - Coagulation4) Ozonation - Souring

18 ) ontinued )

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Q. 115 to 119 consist of two statements, one labeUed as Assertion Al andthe other labelled as Reason Rl. You are to examide these two statementsand mark your answer accordingly using the following codes:1 1 oth Al and R) are true and R) is the correct explanation of A)2) oth A) and R) are true ut R) is nota correct explanation of A)3) A) is true ut R) isfalse4) A) 15 fillse ut R) is true

J 15. A): Complex food webs provide greater stability to ecosystems incomparison to linear food chains.

R) : Co -generic homotaxis- increaJcs resistance stability of an ecosystem_

116. Al: Tropical forests show closed nutrient cycles.Rl : Nutrients in tropical forests are circulated in the biotic components

via mycorrhizae.,117. Al: Regions of high precipitation have acidic soils.

R) : Oxides and sesquioxidcs of iron and aluminium are very resistantto leaching.

118. Al: Clostridium is anaerobic and can fix atmospheric Nitrogen.R) : Nitrogenase responsible for nitrogen fixation is sensitive to oxygen.

119. Al: pH of normal rainwater is slightly acidic.Rl: Ambient air always has excess of oxides of sulphur.

120. Acid rain occurs when the pH falls below1) 4.5 2) 6.0 3) 6.5 4) 5.6

I 19 Turn Over)

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121. The World Summit on Sustainable Development was held at1) Stockholm3) Kyoto

(2) Rio de Janeiro(4) Johannesberg

122. Which of the following NGOs s associated with Chipko Movement?l) Kalpavriksh

(2) Shrishti3) Dasholi gram Swara ya Manda

(4) Green Peace

123. Which Article in the Constitution of India recognizes environmentalprotection as a fundantenta duty of every citizen of India ?1) Article 423) Article 42A(g)

(2) Article 45A(4) Article 51A(g)

124. As per the Forest Act, which o the following is a non-forest activityin a reserve forest?1) Rubber tree cultivation2) Shelter-wood Cutting3) Native tree cultivation

(4) Making water holes and pipelines in thetorest125. Declaration of Human Rights and Environment was drafted by the

United nations tl) Stockholm (2) Geneva

126. WWW stands for1) Wide ware web

(2) World wide web(3) Website of westem world(4) Widest word website

20 )

(3) Vienna 4) Norway

ontinued

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127. Which of the following projCl:ts raised much debate over the socioeconomic issue 'Jf displacement and rehabilitation of native people?1) Sardar Sarovar Project

(2) Aravalli mining(3) Silent Valley Project4) Jaduguda Uranium Mining Project

128. Which of the toHowing is an important source ofbiodiesel ?1) Sorghum 2) Jatropha 3) Sugarcane

129. Noise level considered as Threshold afpain is( ) 90 dB 2) 100 dB 3) 12 dB

130. Which of the following is not correct about GIS?I) It involves superimposing thematic maps

(2) It is a software based technique

4) Castor

4) 140 dB

(3) There is no need for physical surveys in its interpretation(4) It makes t . . : . ~ c of information on a large number of inter-relatedphysical as wei as biological aspects

131. BT Cotton is an example of(1) Hybrid vigor(2) GMO(3) Hyperaccumulator of heavy metals(4) Biostabilizer

132. Temperature required to initiate the process of nuclear fusion is about( ) IO,OOO C(3) I billion C

(2) I million"C(4) I trillion C21 I Tum Over)

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IOP 293 9

L33 EthanoL can be easiLy obtained from substances rich in1) Lipids3) Proteins

2) Carbohydrates(4) Secondary metabolites

L34 Which of the following is concerned with phasing out ofCFCs ?1) Montreal Protocol

(3) Outer space treaty(2) Ramsar convention(4) SAARC summit

L35 Photochemical smog formation starts withI) NO,3) Hydrocarbons

L 6 ~ PAN is the

(2) SO,4) VOCs

(1) Initiation material of Photochemical smog2) Intermediate product of Photochemical smog3) Termination product of Photochemical smog4) Harmless product of Photochemical smog

[37. Methane in biogas accounts for(1) 50-68 (2) 80-86 (3) 90-94 (4) 100

l38 Water vapouIs are present n the1) Troposphere3) Mesosphere

L39 URL stands for

2) Stratosphere4) Thermosphere

1 Uniform Resource Locator{ } Universal Resource Locator3) Unlimited Resource Locator4) Upgraded Resource Locator

22 ) Continue I

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IOP/293 9140 Which of the following acids has maximum percentage in acid rain?

1) Hydrochloric acid3) Nitric acid (2) Sulphuric acid4) Acetic acid141 The pollutants which are emitted from identifiable point source are

called as1) Primary pollutants3) Tertiary pollutants

2) Secondary pollutants4) Ordimirypollutants

142 Oil in water causes fish mortality by affecting1) Scales 2) Eyes 3) Nose (4) Gills

143 Due t climate change more wanning than global average will occur(1) At poles3) n tropics

2) At equator4) n temperate zone

144 Although CFCs are used in areas of human habitation yet maximumozone depletion occurs1) At equator3) n Antarctica

2) At Arctic region4) n tropics

145 The most inaportant indoor air pollutant is1) CO 2) S02 3) Radon

146 Chemicals or agents that cause cancer are called1) Teratogenic

(3) Carcinogenic(2) Mutagenic(4) Neurotoxic2 3

4) Methane

Tum Over)

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147 Atmospheric ozone concentration is measured n1) Decibel scale3) Kilometers 2) Dobson units4) Liters

148 High volume sampler is used for measurement of1) Water quality3) Noise quality

2) Soil quality4) ir quality

149. West-Gaeke methodconcentration of

S used for measurement of atmospheric

1) NO 2) SO, 3) CO 4) CO,150. Environmental clearance to the developmental projects n the State s

given by1) State Pollution Control Board2) State Environment Department3) State Expert Appraisal Committee4) State Environmental Impact Assessment Authority

24 )

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