of Pr"inted

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Pages : 15

Hours l

u$a1 crainRegister Number

3477

I ClLonpp Lo$luGluain o'6tt : 73

[Maximum Marks : 75

etdl6,9lu 60 / SCIENCE 8003389( pdl5p LopErLb grildla; *S / Tamil & Engtish Versions)

Gpq6 :21/z .r,afilTime Allowed:21/z

etdlolarrrr : (1) .9t6r)66rp5 o9lannriaqgd e fl ur ns st ssu u$l ar ndl a-cirenp rr ereinupeoeor

+rflunri$gri Glsir6iT6nerlLb. .eleauu$lor9leil (g6opdlOr-rr-glein e{6Dpr;sarors n66ufl u u non fl r-- Lb a- L- 6rl+ u ns Gl p rfi o:) B s6q Lb.

(2) *'#:"" :ff ;, :#fl"ft1:,,:*"flHiffi iI*" tr,

Instructions : (1) Check the question paper for fairness of printing. If there is any lack offairness, inform the Hall Supervisor immediately.

(2) Use Black or Blue ink to write and pencil to draw diagrams.

gdlu q : $leror9lemn$pneir Ueingr r9l flqseoorrri Glsnainr_gr

Note : This question paper contains three sections.

gfluq : (i)

Note :

Eflq- I/sECrIoN-r(Lo$luGluoo'rooir : 15) / (Marks : 15)

glnrgna96il p-oirar 15 orflarntisgiegrb o,gleoL-urof[isqLb. 15x1=15

=e1eoL-uqri gdlrllgrui, Cler@risuuu$\oiron pn6irr(g LDnpg orglaousorfi6n

rd sq Lb e rfl ur n-60-r erfleo r-eo u-iib Gp ftpGl p@pgl 6r119pol Lb.

(i) Answer all the 15 questions.

(ii) Chdose the correct answer from the alternatives given in the brackets.

(i0

[$lCqrqs / Turn over

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3477

1. s$6 sainuarpgcir er5l ungrburflu:$ peineoLo 616;66finr gr ?

(Lorlu@r ron$glrb GlsururuuLL- ^9l.rpg, or9l$ps$$lA ro[ugDl ron$pb

GlsuuluuL-r- gfeinecir, sqg8,Gs6D6$l6D LD[u@J LonSgl6 Cleu-ru-ruuL-t--of,reu,

u'nrfu m qrGl sal6$l6D LD [u @l ro npp 6 Gleur ur u u uueoal )

Which of the following is inheritable ?

(an altered gene in sPerm

an altered gene in testes

an altered gene in zYgote

an altered gene in udder cell)

Z. prrgt p-ffira1& gL-o ug$lu9lo Gpnu.r e-ed,nL-nri15Lb gafuigru9lrfl

(LglonnciuGLonrgu-rb eoa.ro:nrfreiu, ereinur-dlun gfloiuL-eo6Dt+e;lr, qrfluGunGeoTn GsnLDn

Gsb LqGur6itrdl, to-eofl u-r nGene$l u-r rb)

An example for protozoan infecting our intestine is

-'

(plasmodium vivax, Entamoeba histolytica, Trypanosoma gambiense, Taenia solium)

3. $ecq6 pnerryrfusaflar une$lanuGlug6u genglugleu penL-Glu9,b cpp* 6rpu)l

(soqop6l), (p6n6frpp6rr, d6in0 6 e-154r npeu, Los r1$p&Gsn6eos)

In sexual reproduction of flowering plants, the first event involved in this is'

(fertilization, germination, regeneration, pollination)

4. p$+ririq e6IrL-L- (P6oprig GponLuuGto'Lgt '

(CorofgLb $n, u&eoeurrb' rglflu: 94fl, $taoo erenew$56)

The Autotropic nutrition requires :

(CO2 and water, chlorophyll, sunlight, all the above)

5. u&6D rDru6 a-r nq G)ot u u$l eoeu Lo np gl Lb, Lopu Lb q o.9l Gl al u u to lIg;6D61)

6rEuGlpgtdpg.

(en gol t-- qg ein, 4eonSl gein, ea pr-y gaem, s n n u 6itr6n L- - qri ao au @ )

is a green house gas which causes climatic change and global warming

(hydrogen, oxygen, nitrogery carbondioxide)

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3 3477

6. g$sucil gopgle qgafluuo.rns6iT aaLn86su uu:einu0p516 eunqrfr 5a)6o6rr

(du6lu.r6-glionllgein, q6en5lgein-eopuggein, 6DpLVUd6r-g$er5lu.r6,

ed6$lur6-6lu-rneiir)<.,

The mixture of gases used by deep sea divers is

--.(Helium - &yg"n, Oxygen - Nitrogen, Nitrogen - Helium, Helium - Neon)

7. pH: -log16[H+l gI(D 66o[se6lein aoglufgd erureufls Gl*dlq 0.001 M crafleir

sp6irr pH to$luq

(1,3,11,14)

PH: -log16[H+1. The pH of a solution containing hydrogen ion concentration of0.001 M solution is(1,,3,11.,14)

8. eeueou@ pngl6o6u eturiur-9Lirs uureiru@b gl-p(g*f rdlpuqgenp, qer9luSriuq (p6np, r6leinsn$pu6lrfluq, Lfleineorri@ugppd )

A process employed for the concentration of sulphide ore is(fuoth floatiory gravity separatiory Elecho-magnetic separation, Electrolysis)

g. a-$p e-GonsgoLb unpTe$gluein Gert$p.n6f etpp----------------(g SlrleBseueoeu ereing Gluun.u$gglsanor 4leouu upp(g u u.reinu @ 6 Sl qurfr seueoar _..(Ag-Sn @lryeliuataleu, Cu-Sn $lrJerfrsareo6u, quJ[ngldluin, gtpppns $pe6eeueoeu)

Any metal mixed with mercury is called amalgam. The amalgam used for dental fillingis

(Ag-Sn amalgam, Cu-Sn amalgam, Duralumin, Zn-amalgam)

10. eteuerrsein g@Lbup$eu e-eiron g:p6D GeftLo$$ein IUPAC Gluurn

( "p$utn,

r.r.$copein, m$Gpein, el6tL-rq6r56in )

IUPAC name of first member of alkyne is _.(ethenejthyne, ethane, Acetylene)

11. qorgl uTuL-916b 50 8.61 $lerrglqciron Loaflpaflein 6r6DL-

(50N, 35 N,380 N 490 N )The weight of 50 kg person at the surface of earth is

-.

(50 N, 35 N 380 N,490 N)

[610'--,q* / Tum over

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3477

12. gpp glF,6leoa;ugla: u[ur-] Lofp u7uqs6o6n d. erSt* Graruu$enpp-us6ufdlrDsr.

-e

( GleuoneoLo, Glen7Gler[uun6ur, 6(D6or.D, Lo@ecir )

surface absorbs more heat than any other surface under identical condition.(white, rough, black, yellow)

13. 20 96 r6leinparL-qeiron slblglugl6b 0.2 A rfleinGannr-uLb e-1ga:ne$ Gpeoouuu@Lb16leiirarqg$p GoLEun@

( 100v, 4v, 0.01v,40v )

The potential difference required to pass a current 0.2 A in a wire of resistance 20 ohmis __(100v, 4v, 0.01v, 40v)

e-q5orn6gLb.

( GlaLuuLb, gofl, en$pqarLb, ar$$yorglaru )

An electric current through a metallic conductor produces arour-rd it.(heat, light, magnetic field, mechanical force)

15. lnriaoeu qeuLb Glug, Jil6r6un6 gl6or.o6ugJ

-.

(uLopor q,+, g$unrl, lga$lu_rnrq, (gu5lGl6D6i,ra )

The field of view is lvlaximum for .__-.(plane mirror, concave mirror, convex mirror/ concave lens)

Eflq - IIl sECrroN - rr(ro$u6luannseir : 40) / (Marks :40)

gdluq, oGpgt,b $ttgrgr orgleuln6eqg6E agleoL_u_rofltioqd 20x2=4ANote : Answer any twenty questions.

16. unTLburflu6 enrt$p Eeu 9o66lu-.r a.inrigiarpseir SGp Glsn@risuuL-@eir6n6uT.

€r il pg 6iT erfl u: naroupeop Gp n$Glp@pgl 6r(ggls.

. (g)-- snpaoflsoir @u:S8u-rcil +nripp, unryLburflur6 snryeorflsei, +g'n.(g) -_-_-.._ ereinug gGp $aflei,r lonpg Glarofluun@ +grb(6) __--- ereinug eteue$le$ls@@LuJ er$ftuai*u6or.ouq Ggnqseir

+glb.( er eue6l erlt, ro ng u n@ eeir, E pfl orro npar, duin, .*r ol,^sGeu nLo nnq seir )

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s 3477

Here is a certain important hereditary jargons, fix a suitable one from the list givenbelow:

(a) are the factors which form the phvsical basis of inheritance._ , J

is ultimate expression of same gene.

are contrasting pairs of alleles.

[alleles, variation, speciation, gene, allelomorph]

17. Clunrrntisrs :v(€

(b)

(.)

Match :

Vitamins Deficiency diseases Symptoms

Vitamin B,

Vitamin C

Vitamin D

Vitamin K

Scurvy

Rickets

Haemorrhage

Beri - beri

Nervous disorder

Bleeding Gum

Defective calcification of bones

Profuse loss of blood

18. Ep6sainL- uu$aop 61160f.Egt 6rcpg1,b 6t'lrin$, ursril56f)6nri lgfl6eqrb

/-,,t-.

.i'" -/

)/a-alI-ry

( Ct+cir e-Lal6, qrfr orunetn, Gl Leinrqpn6ilr, dlerror$p 1glqo.l u uqg$lseir)

enar L-L-rileiirsoir (g6npunL@ Gpnu-reeir Gpnu-r .grdlCqdlc6iT

ernorr--L-r-6lein Br

eoorr--L-r-6lein C

eoarl-urileh D

aoouL*ur-6lein K

eiusn6r9l

rfl&or-oiu

8r$pri;e8qGlurflGlurfl

PtrLbq lgearPun@

uSsafleu 6rpps8arergrLb6lsafl eu snebflu-r,i, (g-p q

$tfpprb g6npp6r)

[$guqs / Turn over

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3477 6

Copy the diagram and label any two parts in the group given :

(Cyton, axon, dendron, endplate)

19. GlpnuriLglein ei+uu6,L-ugleil Gonqr__u $tr_$eo, Elruqs :

(et) anpTneon5l6in - +@6DLD grrnriGronein.(+).erL-fforer5leiir -

Based on relationship fill in the blanks :

(-u) Thyroxine : personality honnone.(b) adrenaline :

20. Egl*oanrL-6upg6r-r srflurn60-r g(9rug .e{6or$6lr(geopugreoem Gpri$Grp@ :(e1) aoeGenL-rc-ein -r GleuuGL-nrc_ein -+ un*6tea -+ rluGenn,_'#-

-) L_ru6DsGl6oTE6D

( g ) L-urenoGlemsleiu -+ eosGsrr-_re_eirr + GleuuGL-nrc-eir -+ unridre_ein-+ rquGonnr__re-ein

(O) GleuuG'-n..ein -+ eoeGsrl-,.6iT -+ unridhc-ein -+ rguGonnrre-ein+ l_ureosGlam8eiu

Pickout the item nl.rich has sequential arrangements :

9) Zygotene + Leptotene -+ pachytu.r" iDiprotene -+ Diakinesis(b) Diakinesis -r Z1'gotene -+ I-eptotene -+ pachytene + Diprotene(r) Leptotene -+ Zygotene -+ pachytene -) D-rp*;;; -+ Diakinesis

27. e-u9lrflemrusQ5rb .grarpsrein $oruGrug.is (p6,ps@6 Glsn@&suuu@eiren"g1.$t aru Gl u1grfi s goa'rpsaomr srfl ur nem e-ugr rfr emrusGorn@ Gt r,rgjg*.

q G 7nL-G L- nGe n6u 6ins 6iT

unlire-rflu-rntis6iT

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22.

7 3477

The method of reproduction and the organism are given below. Match the type ofreproduction of the suitable organisms.

Fission Spirogyra Yeast

Budding Protozoans Flatworms

Fragmentation Bryophyllum Bacteria

p-L-erSleiir Loneiur--f GlsLdl6iDr- ereing EE$rysLb .96ogrisuu08pg. snyed,r$6op

16lurnuruufilriars.(' v ('e'

( s ) e-uerllab 6i u gru u @ 6 s amr$gr Geu$l uGl u nqgrsqgLb Eg$ye$$c;irClugruu@8grgr.

( + ) St gS rs Lb, gl rpg$Stui" Ga.r$l uGl u n1g.safl ein ero$l eoeueo u-r u Gu grd pgt

(0 ) dtE,SyoLb, a-r--erSleu Glugrb et6o6urpg Gor$uGlunlgusenonqbGeroflGuSEdlpgr.

(") 6lgu$ruLb, e-L-er!lein etenan$g1 Ga:$uGlunOL56o6ru16 Gerfl$gleor or-, 6ar riGl s noirdl rnsr .

-€ -d

Ivlaster chemists of our body are kidneys justify :

(o) Kiclneys acquire all chernical taken in the body.

(b) IVlaintain the chernical composition of blood.

(c) Kidnel,s send out all the chemicals taken in the body.

(.1) Kidnevs store the various chemicals, taken in the body.

u nglil-{+ .*eueunp Gpng$senon& s6ir0'rl-dl,r5r *(95t*.

(.gr ) i-nel l9lein, ar n elTeiu, goeirenrbueinfl, guar, Glou orou neu

(g) unoem, ueinfl, gdeof, 6(g6Dp, ig[rug(0) +*qGeunu, unein, ue, 6r(D6olo, suLDn6iT

(") pnur, $6o6DT, (pp6o6D, flriraLb, qerll

One of the following groups contains a non-mammalian animal. Pick up the group :

.(u) clolphin, walrus, porcupine, rabbit, bat

(b) elephant, pig, horse, donkey, monkey

(.) antelope, deer, cow, buffalo, black buck

(d) dog, cat, crocodile, lion, tiger

23.

[6](Euq* / Turn over i

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3477

24. LDn$ u rr@ eto,Lpp$ein e1 qu ueouu9lal glgrirdleoarr$g 6r(ggls.

(er) GlorL-@6 uSsoir : unananu9luin ppp,b

(q)___- : gleirenrb ueinflu9lein gor--ueit

Based on Modifications make the pairs :

(r) Incisor : tusk of elephant

(b\ : ouills of oorcupine

25.' x.frusarys sanyeal geusgona-rna on$glr-ocor--6'lpgt'.

(.sr) GLo$sanru GlsuL6Sleu cr$parou pe$+Sl peor-CluEdlpgr ?

(+) er,op g,rainguuglrff r+@u@dlpgr ?

'Sugar is converted into alcohol'.

From the above statement:

(r) \ /hat kind of process take place ?

(b) Which micro organism is invoh,ed ?

26. EpAaafuru remrqe erudierSl6ouru uqpg erflGlaurgt, .9tp6o6ur SppCI r-917l01-no

Lon$glo1Lb.

LoelGlurfl - 191966l - o6uaflu$&61 - ugpgJ

Study the fooc-l chain below, correct it and convert into a pyramid of energy.

Nlulben'y - sparrow - caterpillar - kite

27. +pp6o6D Gedl{is LpeilLb enpanruseoron& SpBsainu6up0dlC,raGpripGlp@&eqLb.

( g"flOrb ueuqseir, prrrfllr-6lein et6DL, grflu:$n gGtpdl, dl6ijT$r gc.pdl,L-ruefu L-ein erfl enrilgsoir, r-61 eineurgt 16l ein et al L- )

Pick out t\: suitable appliances to conserve the electric energy.

(Florescent bulbs, Copper choke, Solar water heater, Electric water heater,Tungston bulbs, Electronic choke)

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3477I

28. 9g 87nrop6lril 20ffi - 2009 gtb +am'r+cir e4|ur-r- Glpnpg Gpnu-rsaflein orgla.rg6

6rrLL or6ofuLtors Glen@rfreuuu@cir6ngil. a.,rtpg Gpn66l E$riaainr--o6'l eur nrisqg61g erfl orr--u.rofl 6uq 6.

(er) CluOLbunarnan ro6s6o6n pn&8u-r Gpnu:ecir u:neoan ?

(g) eroroung gl,6p Gpnu:scir uryol8etrpeo ?

The pie diagram represents a survey result of intectious diseases of a village during2008 - 2009. Analyse it and answer the following questions :

(a) Which diseases affect the majority of the population ?

(b) Hou, are these diseases transmitted ?

2e. Glun'1g$pnpeop $rfr1qs :

(er) e-u9lrfl geir,sglne!, ue6oe re-s6u, e-Lqfl GluL-GTnerSlruLb

( q ) s natyn, eoL"".u nur @,Gl +nSldl f ri, g, S$Gu$t

Odd one out :

(u) bio-alcohol, green diesel, bio ethers, petroleum(b) Cholera, Typhoid, Scabies, Dysentry

FFSn-.

GIL-riiqg snureu6i),

fltsigein qgeuflu.rn

cre$litssnurssa)

Dengue feverchikungunya

IS(Drqs / Turn over

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103477

30. Gpogl L-rqur sar 7sgrig6, Cf p6rgl tL-np 5or [eg&g rb p-oirar GaL E u n@56o6n

zi.c -* EGg Gan6raeuur-6rcireii'lgsluqaeir (lparb 6r(95j6

(.gr) ro 8. Nact 1oo 8' $iffla)

(+)s6 8. Nact 1oo 8' $fl6D

(gflrq - $notu NaCl - ein seoy$p6itT 36 8)

Distinzuishbetweenthesafuratedandunsafuratedsolutionusingthedatagivenbelow,t u t"".P"tature of 25'C'

(a) 16g NaCl in 1009 water

(b) 36g NaCl in 1009 water

(Note : SolubilitY of NaCI is 36g)

sn{is6n[6rrr.u $rflar serr6pgi Glp6tglu@ $leno 560r7-s6oal e-(gdn]At Suin

Go$Glsnaim@ sn6seoyeo*t seoTris (yDr+u-llon ? gftb erainemr$eopp p6e;'

Youhaveprepareclasaturatedsolutionofsugar.Isitpossibletodissolvesomemore;*#it'";;io it'it solution ? iustify your stand'

1.51 x 1g:: (,a;&arg66o6lrGlsn6fui'l-- COz - ein GLoneusaflein oai'naufltieoo u-rngt ?

Calculate the number of moles in 1'51 x 1023 molecules of CO''

6DO s6r)[&o]ein eoglrq[nri6r86D elueofluglein G]l*ouq L'0x10-8 M erofleu gp6itr

pH Lo$uq oeinar ?

The hr,tlroxr,l ion concentration of a solution is ]..0 x 10 - s M. What is the pH of the

solutitln ?

34. (.gi) sainerorriLbq& s6D6oa;s g6uGpgb Gun'5t

(g) Groeaf8ub pnL-nena-rri srilfleu errflri1grn Gungi

a-$p oLr er:su-r ner'r Gal$l o'91 eoems6iT 0*(9 tb'

What type of chemical reaction takes place when

(0 Lime stone is heated ?

(0 a magnesium ribbon is burnt in air ?

35. p6s6ur gaLn$g;an e{LL-al6o66ulu9lein flgluq uai'nqeafleu 6IGpg6 $trlai'nenL- a!9

31.

32.

33.

State any two advantages of the Modern pedodic table ?

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11 3477

36. etgtrfloflu q&eocruenL- srfl Glonain@ g0ri;tgb goengru9leu erglrfleuflu-re-Geuns$eop 6tarr Clup grrqu-rng ?

Why cannot aluminum metal be obtained by the reduction of aluminum oxide withcoke ?

37. C4l{106r6iniD gla;lfra.,.gt ounu-run-@ Glsn6iinl- eterrem$g Lonpflu-rrueaoorqLb 61119$

erppgrflu IUPAC Cluu.;rfl@.

Write down the possible isomers ancl give their IUPAC names using the formula C+Hto.

38. GsnrgL-u $lr--raoeoor $lfrqs.(er) e,9leoe : 6l*p x gr@6srir erafleu e-FgLb :(+)dr* eogoL-ygein rlnriGlauqeu uueinu@dlpgr aerfleu MRI ul-6

r9l roriseSl eu u u einu (Ad rnsr.l-- v --

Fill in tlre blanks :

(a) Force = mass x acceleration, then momentum:(b) t-iquid hvcirogen is for rocket, then is for MRI:

39. E;!6sngrLb a,.lgrsafleu pergscir a-gqdlguu9lein sflGleurs :

(.gl) eO $gr-L-ein ar9laos ereinugt g1g Synb $largrqoiron Glunlgaflef 1ms-l

19: @6o$enp oD u OOg Lb a,.91 eneu9leiir =q oneoar gSl&grn.

(g)or9loreorqLb, a-$rior9lanemqb eruGungtub, gG[ Glunqgoflein r-Sg GleureluGLb

Correct the mistakes, if any, in the following statement :

(a) One newton is the force that produces an acceleration of Lms-2 in an object ofl grn mass.

(b) Action and reaction is aln'avs acting on the same body.

40. .s1eouuqri fqdld;(g6iT Glsn@risuuL-@oiion Glen$eorfl eu p-rflu-rorlp6u)p

Gp npclp @$gJ S $s6ii5TL el LL6u eoeurnu9l eu 0,f , q s.

(.g$ppnsLb, pnrflyrb, sn-ftu6iir, snfiu6, srfur q6eoeru@, etgrflaflurb )

Gpftrfleineunu-r Gar-r neb L- n r-61 eiirs6D Lb

cr$nrfleinaLnu"r Gleu8eu ng8 r-61 oina6Dd

i $lqDlrqs / Turn over

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3477 L2

Complete the table choosing the right items from rn ithin the brackets :

(Zinc, Copper, Carbon, Lead, Leadoxide, Aluminium)

+ r,e eltctrtltle I Voltaic cell

- ve electrode Leclanche cell

41,. 1.5 \, r-6Lirreoilurriqgerglerre Glcnaro,L- $tgrjleinaeueins6iT 5 @tb, 10 @ti:, 15 96tdlein666)r-seir Lo$gib umrs sn6)9l 6l-p-p Glpnr-qno Glsn6r0-rl- 9(E rfleina$g

uL-$atp 6Li6o[s.

Drarar tlre schenratic diagrarn of an electric circuit consisting of a battery of two cells of

1.5 V eac5, tlrree resistarices of 5 ohm, 10 ohm and 15 ohrn respectively and a plug key

all ctrntrectetl in sei'ies.

42. 5 6uLb, 1rl gLn, 30 96 rfleinpeoL-d;oir gO ep06D uti6; $teuraru'ruCIal

Steo-reurrriai-:r--ri-$oneneur. o$fleiir GlpnlSuulein rfleinperrr a;irodme;'

-fhree resist.rpct:s h.ryirrg the values 5 Ct, i0 O, 30 O are connected in parallel with each

other. Calltrlate the total circuit resistance.

43. E$s s,aooir__eupe,rrp,i, tgflBgb sdifl-ddfl6in urs;r6t€;6o6l-I 6I(9gJd;.

( et ) s,alcu tr6rr6L 6o u6 o L-@ u u@pgi rb glOcoor L- peosu u L6DLb.

(-3) stiioreofl"u G.r19ofleir r-9.}6u6 a-euurL-n1gLb u[uq'

L-or]sitltrilrg thi: n'ritt, tlo\r'n the nameS of the parts in human eye.

(al f).rrk rrttt', ttlar .lr.tl-'hracrn that controls the pupil'

(b) 'l-he scrt'ctr tvlterc the image is formed by eye lens'

44. dleinerr.qLb o.rriatfiu$$leu Senpsafl lgur5loiir $Oppqtb'( er ) e n$pu q 6D Lb 6rainio$l u q Lou$l tb Clsr"6iinL- et6n6q'

(+)sn,bp crlleos6Gsn6sui, snppp Glpeingoeneorugleu Glpniru$l orL-geoeuiu9lal

(!)+t'-lto

Correct the mistake , if any, in the following statements :

(a) Magnetii field is a quantity that has magnitude only'

(b) The Magnetic field lines emerge from the south pole and merge at the north pole.

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L3 3477

4s. eoLoGu.rnrslurn crehug sainauflat gaflor9lars6$l6i erEuGLb dlur--uunneoa.t

lgeogrun@ +(glb. sflun60r Spgtuir* gglGlareiire (palb $rigerrpun-i eurr efl

Cleurur6Dn6.

(er) 6tGp or6o&un6ur Gl-E Oral,t@ 6u6D5 gangrun@oeoon 1gflu.9lO*

(+)erou6angr urfl Gleurqd aflp$eop6 e'p6q6.

You knolr'. that myopia is a common refractive defects of vision. Person with this

defect can see only nearby objects clearly. Using concave lens of suitable power this

defect is corrected.

(u) Mention other two types of defects like this-

(b) Exptafn how can we correct it.

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Note : (i) Answer any four questions by choosing one question from each part.

(ii) Drarv diagrams r,r'herever necessary.

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Kala has delivered a baby :

(u) Suggest the immunization schedule for the baby in the first six months.

(b) What are all the diseases that can be cured as per the schedule ?

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3477 14

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(r) Name the process by which the fruit is developed.(b) Give the development process in brief.(.) Draw a neat diagram of that process and label its parts.

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Smoke, smoke, everywhere srnoke. I)o you agree this sihration is good for health. List. out the harmful effects of coal burning.

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(b) Write down any two differences between atoms and molecules.

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15 3477

Ethanoic acid reacts with enthanol in the Pfesence of concentrated sulphuric acid'

(u) Name the organic product.formed

fb) Give the name of the reaction\/(c) What is the role of the sulphuric acid in the above reaction ?

(d) Give two uses of ethanol

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Give the statement of Newton's Law of Gravitation'

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9l lteclraw the above diagram(b) This diagrarn represents

(") Label the parts of the diagranr '. ,.,,

(d) Name the principle by w-hich it vvorks

(e) Name the law to finrl out the direction of the current

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