එක් පිළිතුරකට ලකුණු - 02 මුළු ලකුණු - 02 x 40 = 80

A – jHqy.; rpkd 1 . (A)

(i) iq¥iq wdydr oduhlg ^,' 01&

(ii) mrsir iu;=,s;;dj ì| jeàug fya;=jk ´kEu ms<s;=rlg kso( tal fnda. j.dj ^,' 01&

(iii) ksoka.; jl=.vq frda.h jeks ksjeros ms<s;=rlg ^,' 01&

(iv) j.d ìfuys ;ekska ;ek .ia $w;= isgqùu jeks m<sfndaO u¾okhg WÑ; l%uhla i|yd ^,' 01& (B)

(i) óyrl=ka ,jd iS iEu$ hka;% iQ;% fjkQjg ñksia Y%uh fhdod .ekSu jeks WÑ; ms,s;=rlg' ^,'01& (ii) úf,damslhska úkdY ùfuka mßir ;=,H;dj ì| jeàu wdydr iq,N ùu jeks iq¥iq

ms<s;=rqqlg' ^,'02&

(iii)

(iv) (a) fmdiaf*aÜ ,jK$ khsfÜ%Ü ,jK ^,'01& (b) iqfmdaIKh ^,'01&

(C)

(i) X – m%Ndixiaf,aIKh Z – Yajikh ^,'02& (ii) ldnka mshigyk ^,'01&

(iii) fmdis, bkaaok oykh ^,'01&

2. (A) (i) A- iSlia " mhskia jeks B- fmd,a" ;,a jeks C- udlekaáhd D-fldia "wU jeks ^, 02& (ii) ma,dkafÜ ^,'01& (iii)

^,'02&

(iv) iajdNdúl j¾.SlrKh ^,'01&

ප්‍රශ්න

අංකය

පිළිතුර

ප්‍රශ්න

අංකය

පිළිතුර

ප්‍රශ්න

අංකය

පිළිතුර

ප්‍රශ්න

අංකය

පිළිතුර

01. 3 11. 1 21. 3 31. 2 02. 2 12. 1 22. 4 32. 3 03. 1 13. 1 23. 2 33. 2 04. 4 14. 4 24. 2 34. 1 05. 4 15. 3 25. 3 35. 4 06. 1 16. 3 26. 1 36. 2 07. 2 17. 2 27. 1 37. 1 08. 1 18. 3 28. 2 38. 1 09. 3 19. 4 29. 3 39. 3 10. 2 20. 3 30. 1 40. 4

Ydl ldKavh Ydlhg wod< wlaIrh 1 imqIam Ydl B fyda D

2 wmqIam Ydl A fyda C

ksjeros yevhg yd wlaI kï lsßug- ^,'02& cSùka ixLHdj

ld,h

(B)

(i) X- yDofha ls%hdldß;ajh jeks WÑ; ms<s;=rlg Y- reêr mSvkh ^,'02&

(ii) (a) QRS- wdl=xp reêr mSvkh ^,'01&

(b) 120 mmHg ^,'01& (C)

(i) ,sx. j¾Kfoayh u; msysá iajdëkj jHqla; fkdjk cdk ksid .kakd frda.dndO hk w¾:hg ^,'01& (ii) ;e,iSñhdj ^,'01&

(iii) jdyl uj ksfrda.s mshd ^, 03& 3. (A)

(i) X - úoHq;a ridhksl fldaIh Y-úoHq;a úÉfPaokh ^,'01& (ii)

^,'02&

(iii) P -ldnka fyda ma,eákï Q- ldnka fyda ma,eákï ^,'01& (iv) Mg- hlv weKh wi, frdai mdg fõ'

Cu - hlv weKh jgd ks,amdg fõ' ^,'02&

(B)

(i) L - Cu j,g jvd il%Sh f,dayhla kï lsÍug M - Zn j,g jvd il%Sh;djfhka wvq Cu jeks f,dayhla kï lsÍug ^,'02&

(ii) (a) by; i|yka lr we;s f,dayhg wod< ;=,s; ridhk m%;sl%shdj ^,'01& (b) tal m%;sia:dmk m%;sl%shdj ^,'01&

(iii) L ^,'01&

(C)

(i) Fe2O3 TlaisyrKh ^,'01& (ii) idfmalaI wKql ialkaOh fiùug

wjidk ms<s;=rg (320 kg) ^,'02& (iii) C + O2 CO2

CO2 + C 2CO ^,'01&

X Y

wefkdavh Fe P

lef;davh

Cu Q

ksfrda.S ÿj

ksfrda.S mq;d

Jdyl ÿj

frda.S mq;d

4. (A)

mßm:h kserosj iïmQ¾K lsÍug ^,'01&

fjda,aÜ ógrh ksjerosj iïmQ¾K lsÍug ^,'01&

(i) (ii)

(a) úNj wka;rh Odrdjg wkqf,dauj iudkqmd;sl fõ' V I ^, 01&

(b) R= V = 8 V = 2 fyda iq¥iq wdfoaYhlg ^,'02& I 4 A

(B)

(i)

(a) wjlr mßkdul ^,'01& (b) 230 V = 2300

12 V Ns Ns = fmdgj,a 120 ^,'02&

(ii) P=VI

= 12V x 1.5 A

= 18.0 W ^,'02&

(iii) úoHq;a pqïNl fm%arKh ^,'01&

(C)

(i) ^,'01&

(ii) mQ¾K ;rx. RcqlrKh ^,'01& (iii) (a) Odß;%lh ^,'01& (b) Odrdj iqug lsÍu$ úoHq;a Odrd úp,kh wju lsÍu ^, 01&

B - fldgi w¾O jHqy.; rpkd

5 . (A)

(i) ish¨u bkaøhsld wvx.=jk ks¾udKh l< ffi,hla hk woyig ^,'01&

(ii) a,b,d ^,'01& (iii) ( a) ldfndayhsfâ%Ü ^,'01&

( b) i%dù lD;H ^,'01& (iv) wia:s myiqfjka ì|s hEu- le,aishï W!k;djh rla;ySk;dj - hlv$ úgñka B ^,'01&

(B)

(i) a-uia;sIalh ^,'01&

(ii) b-iqiqïkd YS¾Ilh ^,'01& (iii) fydafudakh kï lsÍug ^,'01& ksjeros ls%hdj úia;r lsÍug^,'01& (iv) iajhxidOl iakdhq moaO;sh ^,'01&

(C )

(i) wka;¾ m¾Y=l fmaYs " uyd m%dÖr fmaYsh ^, 01& (ii) (a) .¾; ^,'01&

(b) .¾; ì;a;s f;;aj msysàu$ .¾; ì;a;s jgd reêr flaYkd,sld cd,hla mej;Su$ .¾; úYd, ixLHdjla ;sîu jeks ksjeros ms<s;=rlg ^,'01&

(iii) C6H12O6 + 6O2 6CO2 + 6H2O + Yla;sh ^, 02& (D)

(i) P= mrd.kh Q= ixfiapkh R = M, yd îc jHdma;sh ksjeros kï lsÍï 3g ^,'02& ´kEu ksjeros kï lsÍï 2lg ^,'01& tla ksjeros kï lsÍulg ,l=Kq ke;

(ii) ksjeros rEm igyklg ^, 01& (iii) iqÿiq ms<s;=rlg ^,'02&

6. (A)

(i) VII ldKavhg ^,'01&

(ii) Y2X ^,'01& (iii) (a) iyixhqc nkaOk ^, 01&

(b) ksjeros rEmigykg ^,'02&

(c) ´kEu ksjeros ,laIKhla i|yd ^,'01&

(B) (i) uQ,øjH mrudKqjla ;j;a uQ,øjH mrudKqjla iuÕ iyixhqc nkaOkhlska ne|S we;s úg nkaOk

bf,lafg%dak ;ud foig we| .ekSfï yelshdj' ^,'01& (ii) úoHq;a iDK;dj Wmßu- W úoHq;a iDK;dj wju-Y ^,'02&

(C)

(i) (a) fN!;sl iajNdjh ^,'01& (b) A ^,'01& (ii) CaCO3 fkdfmkS hdu HCl- nqnq¿ msgùu kej;Su^,'02& (iii) WIaK;ajh ksh;j mj;ajd .ekSu ^,'01&

(D)

(i) (a) ^,'02&

(b) CnH2n+2 ^,'01&

(ii) f¾Çh odu" yria odu" YdLd odu ksjeros ms<s;=re 3g ^,'03&

ksjeros ms<s;=re2lg ^,'02& tla ms<s;=rlg ,l=Kq ke;

7. (A)

(i) c,h ;=< ;dmh .uka lsÍfïos ixjyk Odrd by<g muKla .uka lsÍu ksid c,h iïmQ¾Kfhkau

r;a lr .ekSug yels ùu' ^,'02&

(ii)

(a) tu wjia:dfõos c,h øj wjia:dfõ isg jdhq wjia:dj olajd wjia:d úm¾hdihlg ,lajk

ksid ^,'01&

(b) jdIamSlrKfha .=ma; ;dmh ^,'01&

(iii) 346K ^,'02&

(iv) (a) Q = mc

= 1/2 kg x 4200 J 0 kg-1 x(73-23)

oC ^, 02&

= 105000 J

= 105kJ ^,'01&

(b) E = VIt ^, 01& 105000 J = 230xIx (2x60) ^, 02&

I =105000 J = 3.80 A ^,'01& 230x 120

(B) (i) (a) 4Nx 20/100 m = 0.8 Nm ^,'02&

(b) 4N x 20/100 = F x 80/100 , F = 1N ^,'02&

(ii) 5 N (4N+1N) ^,'01& (iii) (a)fnhdßx iúlsÍu " .%Sia oeóu jeks ´kEu iqÿiq ms<s;=rlg ^,'01&

(b) iam¾Y mDIaG j, iajNdjh fjkia lsÍu ^,'01&

8 . (A)

(i) (a) jDlaldKqj ^,'01& (b) ma,diau fm%daàka" reêr ffi, yer reêrfha wvx.= ´kEu ix>gl 2la i|yd ^,'02& (c) wmsÉPo mgl ^,'01& (d) mdoia: mg,hla u; msysgd ;sîu" ffi, tlsfkl ;oska weisÍ ;sîu" reêr iemhqula fkdue;s ùu jeks iqÿiq ms<s;=rlg ^,'01& (e) uq;%dYh ^,'01&

(B)

(i) ffi, úNdckh u.ska ffi, ixLHdj jeä ùu" ffi, úfYaIKh ùu ^,'02& (ii) ffjria jeks iqÿiq ms,s;=rlg ^,'01&

(C)

(i) talldr ukaokh $ taldldr RK ;ajrKh ^,'01& (ii) 15 x 20 =300 m ^,'01& (iii) (40 – 20) / (50 – 30) = -1ms

-2 ^,'01& (iv) F = ma

= -1 x 40

= -40 N ^,'02&

(v)

^,'02&

(D)

(i) ;dr;dj ^,'01& (ii) yfå ier ^,'01& (iii) úia;drh fjkia ùu ^,'01&

9. (A)

(i) jdIamSNjkh " iaMálSlrKh ^,'01& (ii) A = CaCO3 B= CaSO4 ^,'02&

(iii) mqk¾iaMálSlrKh ^,'01& (iv) c,h O%eùh ødjHhls' tfy;a N+ñf;,a ks¾O%eùh ødjlhls' O%eùh ødjHh osh jkafka O%eùh ødjlj, muKla ksid ¨Kq c,fha oshjk kuq;a N+ñf;,a j,

osh fkdfõ' ^,'02& (B)

(i) ùÿre mqkS,h" mßudñ;sl ma,dial=j jeks ksjeros ms<s;=rlg ^,'01& (ii) T!IO ms<sfh< lsÍfïoS " ridhksl l¾udka;j,oS jeks ksjeros ms<s;=rlg^,'01& (iii) NaOHwKql ialkaOh =40 ^, 01& C= n/V = 0.5 moldm

-3 ^,'01& (C)

(i) W;a;, ldph ^,'01& (ii) laIqø jia;= úYd, lr ne,Sug jeks iqÿiq ms<s;=rlg

^,'01& (iii)

^,'02&

(iv) wj;, o¾mK ^,'01&

(D)

(i) úoHq;a pqïnl ;rx. ^,'01& (ii) úoHq;a pqïnl ;rx.j,g wod< iqÿiq ms<s;=re follg ^,'02& (iii) ksjeros ,l=Kq lsÍulg

^,'02&

ld,h

úia;dmkh

a