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1 Generally most of the fossil fuels eontain-gtCarbon 2 Which ofthe following is middota fossil fuel-gtPetroleum 3 A sUbsliince which undergoes ~------ reaction can be used asa fueIgtexothumic 4 hieh ofme following is an example ofprimary gaseous fue1-gtNatural gs 5 Of the folloYLing which_has the maximum adsorption (of gases) properties-gtcharcoaI 6 Pulverization-ofcoal-means--gtpowoefing of Coal - - - ----======-shy

-------T-HovFare~euroLhijEGafEJ~~fQ~ccrlQrificmiddotmiddot value_the-latent Iie~t-G~Jna=ensatronoana=nydro-geJTTl-_-shypercen -a-g()0fiSaaJ~ fP - - - middotV - O09H x 581 -= ~~~~~~~===-_ieraro- - =-ILG

8 During the combustion of a fuel excess air is supplied This is done because -gtit ensures more complete ~ combusti-un=of-Tiie=ru

9 Which ofthe fohnwing can be used as a preheated fuel-Raseo~s fu~l 10 Which ofllie following is a renewable energy sourelP~AlcohoI I middot

1J Which ofthe following has a higher calorific vqJ]e-~ituI11inous c9al 12 Which ofthe following-orders is the conect on~(th respect to its irtcreasin ~ carbon content or percentage

of carbon -gtlignite lt bituminous coal lt a~i acite 13 Which ofthe followingmiddothas the Iowesmiddott v~~ontent-gtanthracite

14 OpoundthefOll h aVi 1 e mLnimum-oxygen percentt~e-gtarl t~racite---=-_ _ ~~~OWill8=WhiC ~Oal-iS b~tkI

15 Which ofthe following has a hig er ~entige of carbon-gtanthradte 16 LiquicLfueampcalorifiG=va[ueisJete inedby using _-----=-_calorimet6r~~Dm - - shy17 When-coal-is-used-as-a-fiteFn-a u macewe get its ------ calorificvalUamp91UY gtIower-------shy18 In the estimation of moistlIre - ntent e coal sample is heatedTor one our at=---oC-gt llS 19-T linvaterequivalent ofb~ calorimeter IS detennine(Hiyuslng~ bcnzoll acId- - 20-For-=fhc relationship beh~~carbon content ano-ca lorific value-which OftJEfqllowing statelhents ts =====+r--

sauect -gthigh carlJo~ high ~~I(ldEic vlll~e J-)~middot~omsQck~ 1oQdeg7s-potQ)~ 21 Cmbl1stion appa~i(S employed ~o estimate -~-~--- in ultimate amilysis of coal-gtcarbon and hydrogen 22 IltCjeldahls meth0tfused to determme ---------- 11l coaI-gtmtrog-cu 23 Washings frorgJ~5mb ~aloritnet~Lis llsedfor determining ------- in coal-gt stt phur

4 dr~~ fO~6WJFg~11 cI~mffififoesno contr ~utc towards the cdioliflc-vul l-eofCoal -gt niTrogell 2 S-------Wruch 01 (h~IoW1ngwllFdecre-ase- ne-ea onfw-valu of-coal-gt oxmiddotygeI- 26 The pre~ce of ---- is highly wldesirable in coke as it causes brittleness of i Ion Produeed-gtphosp horus rl Sulph(lxescnt in co-ll is detemtined by i1Sing the washings fom b0rnb caloimeter And the sulphur is-- _

pr~ci~ita(ed ns ------------- -gtDariulll saIt bull

8--~ I rl6t qysis-e~Xbou-mcl-jtydroger~ete~ l illed-1r)-lling- - -----50 ntions-re leet-ivel gtIltQJiI- shy dCaCIz

29 1 ultinwtc tmulysis o[ronl ---- - is used to nbsorb (11( p ro~ l Llc t$ of col1-ib1JSliol to d e termin~ (he carboIl T~ I perccntrl3 - -

o The Jll I ~ or cli spdvDllta t fpu lv lt riz d coal ~s -gt l1udy divid ed state9ftllC1 It ) 1 Fordelcmlinine the voln lilc con fit in coal the Dfl1] le is heated ntmiddotSl20 +- 2 loe fo r - Inil1utes -gt7 32 For ash n l(nt del rn ilwli n of til son1ple i he leJ) in jJ lv~ (nce ofn ir at out 7500 C ------ -gt tilI a

Qnsln Jt Y i gllL is u taluad _ __ _ 33 FiXerl lt (llboJ 1) S(11l i l C 11 j ltlt ( )nineo-gtflOI1l1110 i (nlc t~OJltcn t) oIa til Illll(t c r and fish co)Tf [t-- shy~ ~ 1oi~i ll1fl tC lIHdysi do lot giv e ill Jmnpoundl lio ll abouL bull no conlcuUrLCQfll -gt Ilphul

_ _ -=--~ LQKtCl11P( Il llllC c (1 i b CJ l1j ~rl ( ib n M ~o 1 1 results i ll lu wilh-gt75 1080 Yoyi( lt1 Hld 5 - 15 vol nlij _ m atter ~k))Jmiddote1aro~~Jd~middot bR~~+ Cblr -~-=-shy

36 In Otto HoiIllii lU l Y-p 1tlC( () VCI ) roc ss of orqol j zn r i ~l)) of co middot If th ~ tilL l r c~1 i smiddotwntcr gas 7 In the btd livc II prv~( of C(lbOlliz lI lJOJ o[e ai t11 fuc lll scd ] -gt (0 J I 1~

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38 Coal gas is recovered frorn the flue gases from the Hoffmanns process of carboni- zation of coal to get the byproducts ----------is used to recover H2S from the flue gases -gtferric oxide

39- Dry quenching of cok~ as is taken out ~Ire oven involves-gtpll~sing a cool inert gas 40 Coal tar is a-gtsourceot aromatic ltWrllpounds - gt

-==~==4== nanelectrocpemical readion-~ shy1 I= = ~ e electron- liberated can trayel through a conductoi and consumedat a Clifferent place ~gtoo

- a - aTIlel eel ~ e OXI ~eectrode aI1(tTgctmit1ffiFgk0ooffuS=tak~n-are-middot-------- respectivefy ~zmcarrd copper-electrodes -

43 In_a galvanic cell theWll~ teaction was 2AI + 3 ZrlH -gt 2 AI+l+ -+ 3 Zn The anode in this cell is -gtAI 44lhe porentiar ci f~~l ofihe following can oe clerCi1l1meaaireCtly - anygaivanic cell - ----===== 45 Cell reaction ~Jt1le cellZDlZn++(10M)IICd++ (lO)ICd is given by -gtZll + Cd+2 -gt Zn2+ + Cd 46 Which ofthlaquoj6llowing is correct for the potential ofa galvanic cell-gtoxidation potential of anode +

reductiou5ittential of Cathode 47 coppeoe~~trode (rcduciiqn potential +034 volt) is coupled with silver electrode (reduction potential

+~volt) the cells potential would be -gt046 v 48 Which metal dissolves vhen the galvanic cell CulCuH IJAg+ lAg is u~ed-gtcoppcr

--=-----4~11 tl1e-c~ltAgl AgJ I]lL Zn the cell- -o_te~tial i~ -136- r-Itiudicates-that such a cell -gtftlc-cellTcactiOI1 - shy

-- 5~is nOl~p-ontane~~_~ _ -- -___ ~~~-1V solutlOnmiddotCln bc detentI1neTIby COmblhl11gtrnYUlltofttnfoU-owmg electrodes excepturre-shyhopound-50--1he pI1 ofa______witlucaLomeLelectroue Which is_the electroddhat calmruJieJlSe_ctl middot-gtcQPper ckctrodc _ ___----shy

51 The potential of a cell is 271 t If the oxid tltion potential of the cathode is -034 I whut would be the - reduction potential of1~ht mo(le -gt+3 QS volts middot -- -

52 The term slnndard potcnli~11is applicable to-gtnny of the electrodes mentioned 53 The potential of copper cl~c trode is +034 volt-gtit is its reduction potent-ial 54 Oftlle following which is he primary standard ~lectrode-gthydrogell electrode

-+---~55 The tCmp eranilC IsultIiyt ~clI for ciculating the standard potemiac ismiddot gtZSPC

-Jc6~Uydrogcnclectrodc can act-gtlgtoth as middotan mod _ 57 Which o[ thc follillYjJ113 IeCIJOlks hilS tho maximum oxiaation pqtentialgt i~7Li

~=======~S--TIle lolrowing me t 1CpotC)Tfiatso some f-r1lt (hctrol - 4 fi ~ 1fj- ) SL1 ~Sn -O14-v l-FH DV=======~~~

ond CuHCu 031 v Which of the following statel1clJts is c9rect -gtZll rlisplnccscopper fl-om COPP- er

salt solution t-J~J-gt ewgtI(s~o middot bvO~C3f1 _ nlomcl ismiddotmiddotgt SlCh

e po e Jat o mmdLCkCrr011trrt-rpnrticulurtcm ahtfe-tlr~dc r asc-iHliuen~a s o-ir-------_-_-__

conccutril tion of Cl soiu 61 The refer nc d cclro c ( i f nl fld from -gtI g2 12

2 1 ulIllc(nis A C llud 11 e pot Iltial -3 5) -16 ) -OfOl lld 080 volts Of (he [our which is (he i1OS I pow rful r~duc ille ) out gt A

3 l ndllltI p lentin ls of til ~ yS I UI11 S A I ] 1 L 11 ore ~ 7r -070 nnd -023 volts respecLively Which f lhe II win t It middotillerlL i IIeel middot Hwll l I dl CC H

rltll dUCli 11 II l1f l 11 (11 r IntioIiSbir be lw n OllUC ficcnlntion r tIl Ieetrolyt lJ Cn bo sbown a - 1 ~o+ O O~nu l [M I] -~- shy

bull Ill ti l II lrllrl I duct 1 I ( I i III I Ir le (J i Imiddot i 20 gt A) i middot 01pound1vollJf at 2~ o C 001 M Inti n ill cl ~ ] c ~n ll let j) rt1 e clcctraci I lis pol nliul wo l td bo gt ~O 4 ~ Y --shy

111 oll cl1timiddot li II middotjl Il middot loctl )Jyt( in ttl I ~ I(I (1 li til snll1c bul of diff rent 01 eel trnt-iolls--- shyI In (heCOi l fl lmlioll 11 wh I olu ll on 1the ( lllltO lJHctr J)ftii b ll of li ~ r~n l cone tr3ti~r CI (lld C2

middotk tti l I rill) I wlll1 l( J 11 ci llO d wll 11 middot ~ I C j bull ~~~ C-4 C~veoS) d1 oj~cr+C() l~ Fu 1cc1 lt die I rl I ll l 11n lf1 r I )Id oecolIl 1) J i ll ( Il ( h~ f vert the -gt i 1illtu ( lcctdcnl en er-fl Y

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ltgtr t) ~~ e~os ~ddo L901~+ co 3 ~ 69 Fuel cells are better than galvanic cells because gtthe chemical energy is converted into e1ectrici

energy to about 70-80 ~

70 The most preferred fuel to be used in a fuel cell is -gthydrogell 71 In the Ledanche cell the electrodes aregtzinc and carbon 72 The electrolyte employed in Leclanche cell js-gtaIl the three tc gethe~ 73 What would be the maximum voltage th1lt can be obtained with a Leclanche celI-gt15 v 74 Jp leadaccumulator the apodeis-gtPbT()-atedwith--I~h02 --

=-=-7~ eaa accumularo-tcthe-electroIjteuse(b1s-~Iimuic=acidDJlrlng the usage of the cell the C6ncentration~ of the acid -gt-declOeases

~=====76 In lithlum batteries water or aqueous solutionsare-excluded because -9water reacts wft 1 mfiiu~~~~ n Tnee1ectto (yte used-in ecl-Nicellls=gt~~IiE===========~== 78 Button cells are also known as -gtMercl1ty-=-cells 79 In a LecIanche cell which of the following reactions is the main one anhe cathode~gt2Mn02 + H 20 + 2 eshy

-gt Mn)3 + 20H-

80 In button eel used in watches the anode consists~-gtHg 81 Which of the following is not a fundamental particle-gtDeuterori 82 The origin ofnuclear force between nucleons is due to the exchange ~f-gtMesons

--- ttNuclearforcesare-gtSpindependen _ _ ~ - -=--84_TEe process 0 proQucing a new stable nuc eusfroiirtneollferSta151e-ooclemds-caUeu--gt-Arti-ficiaFI-====shy

=1 fransmutation - - -------= 1-----85-W1IICh~ e-artif[cfaJ-transmltltation-ofthe following 9hanges ~nth ofeIem6nts-gtNucIeus

86 A free neutron decays spontaneously into-gtA proTon an efecTioiia)id an anti neuti-inoshy8~1 Neutron was~discoverea-byilieexperunenl-of -5 Aftific iiil ttansm-utation-_o - = e=2-Qyalplta=pJrrticl~$~

shy

r 88 TheIIDalneutronsenergy_is~~te_ -- ~~middotekctM~odd_o middot bf~irt shy89 Vlhicjl decay causes decrease of atomic number by 2 units and niass number by4trlits -gt0 ~ decay

) Thcmiddotcpeod of aJpha particles is of the orLie vf -gt leG ms

91 Find the correct statement in the given -gt - rays travel with the speed oflight

=li~========~9~ ~The Eenetratmg power of~a f3 r ~si-ng-ot(tecaremiddot-~middotmiddot r f3C2~ ---ra-diatiolls-i1Hle6f~a ~ 93 Th~plrioo-rrrCIIoIrofradioactiv ity-was-ufs tcdfsCu_leredb= ~Ruther-~~ t- 94 C( - rays consist ofa st-cam of _gtHe+2 - (5

95 In radioactiv~ decay an emitte~electron cltmes from-gtThe n~2~ s Cfthe atom 96 Radioactive iodine is being used to diagonise the disease JJTfilyrOid

---99-- 111 thc-nuelearrcacti0u6C I1 --~5 ~lL-r=-f3--F-X-stancls--fo )Hlutd~rlmiddot~~--=====c= 9 [H I + III I - gt IH 2 -I- X -I- Ie 0 + energy The emittldicle is-gtNetdHo -------- shy

99 Whicho~th~ following is not correct abou~ nuclpIt6Ic~ -gtThey obeY i~yersc square law 100 Bmd11lg energy per nucleon Ismaxunum W -gt Incrmcltilat~nudel 101 The binding energy per nucl eon is ~~um at A=56 and its value is around _

Mevnucleon -gt87 ~c 102 The stability of the nu clellsis not asured by-gtRatio of nuEiucr of positrons and protons l03 As the mass numlJer OI JLillcr~ 8 the binding energy per nuCleon in a nucJcus -gtFirst in crcase

and then decrea scs - -

104 When thCm1ltip liampa tt~Q in -nuclcar fi ssion reactions is css thallie~~~~~~~ -gtNotpossible__ _ -- - tJJ-lNmiddot el4cvnslt=dc _ ( shy

1 5 Choose incorrect at~ ll1ent from the f()llowing -gtI~or lIeavy iiiclFi (he lllcrea s ilrUill clll gr-- shyener gy p CI nilcleo l1 s1 5 (hecontribution of the decrcnsi-tg Coul0middot111b middotrepulsion

235 J 6 The averarre Inber ofneutrons released l)er fission in the fission 0[U is-gti59

107 Most of (1~0nemiddotgy felcas ed in the fi ssion is canicc b~ -gtiis~l~ll fra grlcll ts JU8 The VorkiKg pnnc~ple U1 atom bomb 1S -gt5 upc2 - cntlcal chalU lcaC110n

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ltgtr t) ~~ e~os ~ddo L901~+ co 3 ~ 69 Fuel cells are better than galvanic cells because gtthe chemical energy is converted into e1ectrici

energy to about 70-80 ~

70 The most preferred fuel to be used in a fuel cell is -gthydrogell 71 In the Ledanche cell the electrodes aregtzinc and carbon 72 The electrolyte employed in Leclanche cell js-gtaIl the three tc gethe~ 73 What would be the maximum voltage th1lt can be obtained with a Leclanche celI-gt15 v 74 Jp leadaccumulator the apodeis-gtPbT()-atedwith--I~h02 --

=-=-7~ eaa accumularo-tcthe-electroIjteuse(b1s-~Iimuic=acidDJlrlng the usage of the cell the C6ncentration~ of the acid -gt-declOeases

~=====76 In lithlum batteries water or aqueous solutionsare-excluded because -9water reacts wft 1 mfiiu~~~~ n Tnee1ectto (yte used-in ecl-Nicellls=gt~~IiE===========~== 78 Button cells are also known as -gtMercl1ty-=-cells 79 In a LecIanche cell which of the following reactions is the main one anhe cathode~gt2Mn02 + H 20 + 2 eshy

-gt Mn)3 + 20H-

80 In button eel used in watches the anode consists~-gtHg 81 Which of the following is not a fundamental particle-gtDeuterori 82 The origin ofnuclear force between nucleons is due to the exchange ~f-gtMesons

--- ttNuclearforcesare-gtSpindependen _ _ ~ - -=--84_TEe process 0 proQucing a new stable nuc eusfroiirtneollferSta151e-ooclemds-caUeu--gt-Arti-ficiaFI-====shy

=1 fransmutation - - -------= 1-----85-W1IICh~ e-artif[cfaJ-transmltltation-ofthe following 9hanges ~nth ofeIem6nts-gtNucIeus

86 A free neutron decays spontaneously into-gtA proTon an efecTioiia)id an anti neuti-inoshy8~1 Neutron was~discoverea-byilieexperunenl-of -5 Aftific iiil ttansm-utation-_o - = e=2-Qyalplta=pJrrticl~$~

shy

r 88 TheIIDalneutronsenergy_is~~te_ -- ~~middotekctM~odd_o middot bf~irt shy89 Vlhicjl decay causes decrease of atomic number by 2 units and niass number by4trlits -gt0 ~ decay

) Thcmiddotcpeod of aJpha particles is of the orLie vf -gt leG ms

91 Find the correct statement in the given -gt - rays travel with the speed oflight

=li~========~9~ ~The Eenetratmg power of~a f3 r ~si-ng-ot(tecaremiddot-~middotmiddot r f3C2~ ---ra-diatiolls-i1Hle6f~a ~ 93 Th~plrioo-rrrCIIoIrofradioactiv ity-was-ufs tcdfsCu_leredb= ~Ruther-~~ t- 94 C( - rays consist ofa st-cam of _gtHe+2 - (5

95 In radioactiv~ decay an emitte~electron cltmes from-gtThe n~2~ s Cfthe atom 96 Radioactive iodine is being used to diagonise the disease JJTfilyrOid

---99-- 111 thc-nuelearrcacti0u6C I1 --~5 ~lL-r=-f3--F-X-stancls--fo )Hlutd~rlmiddot~~--=====c= 9 [H I + III I - gt IH 2 -I- X -I- Ie 0 + energy The emittldicle is-gtNetdHo -------- shy

99 Whicho~th~ following is not correct abou~ nuclpIt6Ic~ -gtThey obeY i~yersc square law 100 Bmd11lg energy per nucleon Ismaxunum W -gt Incrmcltilat~nudel 101 The binding energy per nucl eon is ~~um at A=56 and its value is around _

Mevnucleon -gt87 ~c 102 The stability of the nu clellsis not asured by-gtRatio of nuEiucr of positrons and protons l03 As the mass numlJer OI JLillcr~ 8 the binding energy per nuCleon in a nucJcus -gtFirst in crcase

and then decrea scs - -

104 When thCm1ltip liampa tt~Q in -nuclcar fi ssion reactions is css thallie~~~~~~~ -gtNotpossible__ _ -- - tJJ-lNmiddot el4cvnslt=dc _ ( shy

1 5 Choose incorrect at~ ll1ent from the f()llowing -gtI~or lIeavy iiiclFi (he lllcrea s ilrUill clll gr-- shyener gy p CI nilcleo l1 s1 5 (hecontribution of the decrcnsi-tg Coul0middot111b middotrepulsion

235 J 6 The averarre Inber ofneutrons released l)er fission in the fission 0[U is-gti59

107 Most of (1~0nemiddotgy felcas ed in the fi ssion is canicc b~ -gtiis~l~ll fra grlcll ts JU8 The VorkiKg pnnc~ple U1 atom bomb 1S -gt5 upc2 - cntlcal chalU lcaC110n

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j 09 In a mtical chain reaction -gtEnergy is released at steady rate 110 Unsttble fissioll fraiments decay by emitting neutrons and electrons neutrons so emitted are

called~gtDeIayed neutrpns Ill Chain reactions can be initiated- by -gtDelayed neutrons 112 Cadmium and B0E0n rods are used in a ~ar reactor to -gtAbsorb excess number of tlJer~aI

neutrons Cr

113 Y- lhe-~=~ti~~~~1I~0EtM aF- -~-~O~-SI()W~ ~~s~~-~~Dltor49 anuclear-reactor- fic~Qfbf)t1~ampm ~~~~~~~ ~fu ~down til neutmnpound4QotheFma-hener ~ ~

114 T e react6t-h-w1ilCh-=-~ of fissionable nuclides produced are--morethan the used is called -gtBreedetread

115 Nuc1earfissiQnc~n plained by -gtLiquid drop model ofthe milleusshy

116 The operation o~tpnclear eacto is said to be cri~icaI if the muItiplication factor h~s a value -1 117 Nuclear ener~ amp re1eased In fissIOn because bmdmg energy pltr nucleon s -gtGrcater for fissIon

fragmentsfuan for~i~htIlu~leus ~~~ ~aIYSadc-hto ~1Ji~co 118 Theprod~fle fissIOn ofU-235 by thermal neutron are -gtCan be differ ent m each fiSSIQn

In the fi~on of0235119 which one is not true-gtThc products are always Ba and Kr 120 The Q-rage life ofneutron is-gt1000 sec

- ~ _~- ~-- -_- - =--_121___-= (IltL1QtiY~15p-J d~cay into -_sili~OllJositroll L _ _ __- ~__

122 The main source 6fsuns-energy is---gtNucleal fusion --7~~=-==--====--=~--123 J fltJlslon realtJionst~fi$ plitfe ~J higb teJuperaturdecause-gtKilleticenerg)Cishigh cllouglLto over

co e coulomb-l~epulsiil-betwcCll-lluelei i ~-----__124V NuClear fusion ispossible-gtOnlybetvYccn light llndci _

--12 5 -- - Irf Sull the impQttant source of energy is -gtProtoll - IflQtOll cycle [26 - - In-carbon - nitrogen nuclear fusion cycle protons ore fhscd middott6orm l-~elium lludcus positrons and --- -

release SOnIC energy The number ofprotons fused ancI the numbers opoundpoSitrons released in this process rosrmiddot~clivclyDc -gt4 2

r 27 A particle havingno charge and slmost nQ rest mass-gtNcutrhlp

128 - - In tlle nue efrHe~Ohon-6 -~5Fl --R--I~X stmld for -gtA 1lbut1ltIriUo~==middot==============--- 22 - -gt~NlIcmIIItJtrirvEiTIaa===============-~rl 1-t-jl-rJ-- n2t=~eITcr~hc cmittcdptrticlcisi~130 To ustuin the elwin reaction mass ofthc l1lnt riu hou1d be -gtgrenter than critical mass 131 Theradiatioll ln he sunlight that gives us U1C feeling onwtncs~ is -gtUltra-violet 132 The energy whiC1 is not derived fiom the un is -gtNiclcar CJlCl~Y

---=--__133 WhiclLnfihci01l6llinpoundslatenicnt$ j s nnincorrcatslatomentmiddot-gtThUU11Jmut Q f snnIighLthAal-____ t fltTi v(~s 1t (he car $ tu ace lS constltut- - --

l34 PV eel [ nrc mnd by-gtScru1couductors II

US Which f Ii10 DHowjnG ne is correct stotCn1vJlt- rv ells couvci( soll1 cD middotrgy directly iuto ~l triclI 1po I r

13 lrloUlwncc f IHmiddotphotovollaic lITtly is not (I c r C(1 101 t 1jlotl -gtR flcctcP1111otOllS c 137 H~lio t it s tl p~ lt1 in-gtSolnl pow r towcr~ ~~~middotelAC~~Q1c 09 (jretmiddot(~ 13 8 Flfll1Intc J1 c~t6r r 11 ed whel q uirc ( 1111 ulur( nr Plow it Oll t-gt2OO oF

--WhIch ofll ( ~ ~ n Hi u~llowobl c tiO Ifmiddot f ncr 1 0 lt 1[1Hdnl (f r Y --

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ThernelLLi on c~ jilted Yt1 () tm find resp eib16 for the cniJ SC of ltkin CEl11CCr1lCmiddotgtUV t

I1JC fLt Ci liDC)1dl lh solar ookor c n IJ inoaln d by II ChL~ _ - hu mirror --- ~-~--n 0 sioL l ll 111 CI (11 m tol U od js gtc rr --- - 1shy

Wbid) ()[ ll l( [ ( JJeil dn arMS i plcfenod rOI 01 r (htlJwd uluc llic p lant ( -gt ot arid zo nes In tJ III h ~ ll nd G II I I ILl iOt y l~ 1 ( j aohll 11 ( J( Jlot (l WI r~ lI J ( gtC pp Clluds

J ( l~ RcI1~ r ( IlE 11 1l 1ly ~ w d ~ r clXploitlng 01 ( QUerRY 10 cfl lledmiddot ( l ) t l1 lS I l16 Til J(gl(J 11 rn Cl tll1 0 lJ I1OJOcon dl L ZOIN i ( n lospl1 ere

cQ -ltd-I ~ fro jA ooJY~ CIerUeNeJelf 7 e4 51 a)~ 0

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147 De~letion of ozone layer is Cr~y-gtNO 1 148 present in is hannful to living organisins-gtTroposphere0 3

149 Uns~asonable r~ins C l~~S ~~ich are obsewed due to-gtG~()bal warming~150 The Important SIllkiTt 2IS-gtHydrosphere 151 Increase oisemiddot le ~1s ue to-gtGlobal warming _

l152 - VlliiCfiofl e w gsh6uld not be called a pollutant-f-=gteuroQ2-shy--=~~~~~~~~~~ra~ e-=~ r~e~ra~ture-ofthe-earth-due-to thea17senee-~tGit~neusMffe~t=ls -l~C-~g ~

-~2ffeeJcls~mairuydumiddote to-gtCQ2 u

_ 155 The~eaSdn percentage of CO2 causes-gtIncrease insea-Jbvd - tSo =f fl~e=fE)ltowing-po11utants ~is considerect as-tycyontQiiI4nsto15utcurseto-theenvironment

gtChl~~~ro Carbo~s ~vvtA middot ~~aM~addq lddJ~co 157 rY The mam functlOn ofOzone layer III the atmosphere IsgtTo ~utoff UV 1581 V- Although CFS are hannful they are widely used because-gtT~ey are cheap 15Y Which ofthe following causes th~ least pollution when burnt~-gtnatural gas 60 Which of these is not a renewable source oferiergy-gtnaturiil gas

1 1-6~~ The aV6iugeconceutmiion of atmospheric CO2 in the year 2deg85 was about-gt380ppm

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