BATTLE FIELD MCQ PAPER 23 - drive.apluseducation.lk

1 CHEMISTRY – UJITH ANJANA HEMACHANDRA

. .

01. khsg%cka mrudKqj i|yd ¨úia - ;s;a jHqyh jkafka,

(1) . ̈. (2) ̈. (3) . ̈ (4) . ̈. (5) : ̈.

02. A,B,C, kï uQ, øjH ;=klska iE§ ixfhda.hl § A,B, yd C j, TlaislrK wxl ms<sfj,sk +2 , +5 yd -2

fõ'fï ixfhda.fha iQ;%h úh yelafla

1. A2(BC)2 2. A2(BC4)3 3. A3(BC4)2 4.ABC 5.A2BC

03. 0.50 moldm-3 H2SO4 ødjKhlska 5 dm3 la ms<sfh, lr .ekSu iòyd ixY=oaO;djh 98%(w/w) jq o

>k;ajh 1.89 g cm-3 jq o H2SO4 ødjKfhka uek.; hq;= mßudj @

(1) 13.6cm3 (2) 68cm3 (3) 136cm3 (4) 204cm3 (5) 272cm3

04. CO2, CuO, CaO yd H2O hk øjHj, wdï,sl .=Kh jeäjk wdldrh

(1) CaO < CuO < H2O < CO2 (2) H2O < CuO < CaO<CO2

(3) CaO <H2O < CuO<CO2 (4) H2O < CO2 < CaO<CuO

(5) CuO <CaO < H2O < CO2

05. whkfha ixhq.aul wï,h jkafka "

(1) NH3 (2) NH2OH (3)

(4) N2H4 (5)

06. fï m%ldYj,ska wi;H jkafka ljrlao@

(1) ue.akSishï m%;sTlaisldrlhla iy Tlaisydrlhla f,i l%shd lrhs'

(2) .=jka hdkd iE§fï§ ue.aksishï ñY% f,day fhdod .kS'

(3) ue.akSishï" Tlaiscka yd khsg%cka flf¾ ,eÈhdjla fkdolajhs'

(4) ue.aksishï" we,als,a yd weß,a fya,hsv iu`. m%;sl%shd ù .%Skdâ m%;sldrl idohs'

ld,h ld oukakdf.a wkd.;h ld,h úiska ld oukq ,efí'''

BATTLE FIELD MCQ PAPER 23

iïmQ¾K úIh ks¾foaYhu wdjrKh jk mßÈ ieliQ Wiia uÜgfï MCQ 50 la fuys

wka;¾.; fõ'

mx;s meje;afjk ld,fhka miq ñks;a;= 30 la .=rejrhd mka;sh ;=< isák w;r tys§ Tng

wjYH ´kEu isoaOdka; fldgila kej; wid oek .; yel'

MCQ NO 6641-6690

2 CHEMISTRY– UJITH ANJANA HEMACHANDRA

(5) ld¾ñlj ú,Sk laf,darhsv úoHq;a úÉfþokfhka ue.aksishï f,dayh ,nd.kS'

07. c,fha wvq ;rñka ødjH úoHq;aúÉfþoHhla jk MX4 c,fha osh jQ úg M 4+ yd X- whk idohs. fuys

ødjH;dj S mol dm-3 kï,

(1) (

)1/4 (2) S = (128 Ksp)1/4 (3) S = (256 Ksp)1/5

(3) S = Ksp (5) (

) 1/5

08.

yd hk m%fNaoj, uOH mrudKqj uqyqïlrK wjia:d ms<sfj,ska"

(1) (2) (3)

(4) (5)

09. K2[Co(NO2)6] ys IUPAC kduh

(1) Potassium(I) hexanitrocobaltate(II)

(2) Potassium(III) hexanitrocobaltate(III)

(3) Potassium hexanitrocobalt(0)

(4) Potassium hexanitrocobaltate(III)

(5) Potassium hexanitrocobaltate(II)

10. ødjKhla m%dud‚l lsÍu i|yd fhdod .kakd m%d:ñl m%dud‚l ødjKhla ms,sfh, lr .ekSu i|yd

fndfydaúg fhdod .kS' m%d:ñl m%dud‚l ødjK ms,sfh, lsÍu i|yd fï ixfhda.h

fhdod .ekSug fya;= jkafka

(A) th oaúfm%daál oaú Ndiañl wï,hla ùu h'

(B) th ia:dhS ixfhda.hla jk w;r jd;fha § ksjerÈ ialkaOhla lsrd .; yelsùu h'

(C) th ixY=oaO ;;a;ajfhka ,nd .; yelsùu h'

(1) C muKs' (2) B muKs' (3) A iy B muKs'

(4) B iy C muKs' (5) A, B, C ish,a,'

11. my; ljr whkhla wvx.= c,Sh ødjKhlg c,Sh NaOH ødjKhla tlal, úg ksÍlaIKh l<

yels j¾K úm¾hdihla isÿ fkdfõ o@

(1) Al3+

(2) Fe2+

(3) (4)

(5) Cu2+

12. ldnka - ldnka oaú;aj nkaOkhl yhsârckSlrK tka;e,amsh -119 kJ mol-1 fõ. fnkaiSka

ihslaf,dfylafiaka njg yhsârckSlrKh lsÍfï tka;e,amsh -205 kJ mol-1 fõ. fnkaiSkaj, iïm%hqla;;d

Yla;sh

(1) +172 kJ mol-1 (2) +152 kJ mol-1 (3) +76 kJ mol-1


(4) -152 kJ mol-1 (5) -172 kJ mol-1

13. fï m%ldYkj,ska wi;H jkafka ljrlao@

(1) WodiSk c,Sh ødjKhlska iòyd [H3O+(aq)]= [OH-(aq)]= √

(2) wdï,sl c,Sh ødjKhlska iòyd [H3O+(aq)]>Kw yd[OH-(aq)]<Kw

(3) laIdÍh c,Sh ødjKhlska iòyd iòyd [H3O+(aq)]< √ iy[OH-(aq)]> √

(4) ish¨ WIaK;aj j,§ WodiSk c,Sh ødjKhla iòyd [H3O+(aq)] = [OH-(aq)]= 1x10-7 moldm-3

(5) 250C § wdï,sl c,Sh ødjKhla iòyd pH <7

14. wiuñ;sl ldnka mrudKqjla fkdue;af;a ñka ljrlgo@

(1) 1 - chloropentane (2) 2 - chloropentane

(3) 1 – chloro -2- methylpentane (4) 3 – chloro -2- methylpentane

(5) 1, 2- dichloropentane

15. m%n, NIauhl m%n, wï,hl u.ska wkqudmkh lsÍfï§ my; mshjr wkq.ukh lrk ,§z'

a. ìhqfrÜgqj c,fhka fidaod yer th iïu; wï, ÞdjKfhka mqrjk ,§'

b. msfmÜgqj Niau ÞdjKfhka fidaod yßk ,§'

c. wkqudmk ma,dial=j Niau ÞdjKfhka fidaod yßk ,§'

d. Niau ÞdjKhg o¾Ylhla tla lr wka; ,laIHh ,efnk ;=re th wï, ÞdjKh u.ska wkqudmkh

lrk ,§'

fï m%ldYk j,ska i;H jkafka

1. .Kkfhka ,nd .kakd NIaufha idkaøKh ksjerÈ fõ'

2. .Kkfhka ,nd .kakd NIaufha idkaøKh ksjerÈ w.hg jvd my;ah'

3. .Kkfhka ,nd .kakd NIaufha idkaøKh kshñ; w.hg jvd by<h'

4. NIAufha idkaøKh ioyd ,efnk w.h ms<snoj ksYaÑ; hula m%ldY l< fkdyelsh'

5. wkqudmk ma,dial=fõ NIau ødjKfhka fkdfiaÿfõ kï .Kkfhka ,nd .kakd w.h ksjerÈ fõ'

16. fuf;aka iy t;Ska ñY%Khlska 9.0 cm3 la jeämqr Tlaiscka iu. ñY% lr iafmdagkh lrk ,oS. M, ñY%Kh

ldur WIAK;ajhg yd mSvkhg m;a jQ miq tys mßudj 21 cm3 la úh. fï ñY%Kh KOH ødjKhla ;=<ska

hejQ miq mßudj 7 cm3 la olajd wvq úh. ñY%Kfha ;snQ fuf;aka iy t;Ska mßudj ms<sfj,ska

(1) 5 cm3 iy 7 cm3 (2) 6 cm3 iy 4 cm3 (3) 3 cm3 iy 7 cm3

(4) 4 cm3 iy 6 cm3 (5) 7 cm3 iy 3 cm3


17. hk uQ,øjHj, m%:u bf,lafg%dakh ,nd.ekSfï iïu; tka;e,amsfhys úYd,;ajh fjkia fjk

wkqms<sfj, jkafka"

(1) (2) (3)

(4) (5)

18. fï m%;sl%shd oduh i,lkak.

CrO2Cl2(g) A B C D

fuys D úh yelafla,

(1) Na2CrO4 (2) Na2Cr2O7

(3) Ag2CrO4 (4) CrO3

(5) AgCl

19. A kï ixfhda.hg ;kql HCl tlal, úg ÿUqre mdg jdhqjla msgjq w;r Z kï wj¾K ødjKhla ,eìK' Z ys

fldgilg ;kql NaOH tlal< úg iqÿ wjlafIamhla ,enqK o th jeämqr NaOH ;=< Èh úh' tfiau Z ys

;j;a fldgilg c,Sh NH3 ødjKhla tlal< úg o iqÿ wjlafIamhla ,enqK w;r tho jeämqr NH3 ;=< Èh

úh Z úh yelafla"

(1) Al(NO2)3 (2) Zn(NO3)2 (3) Zn(NO2)2 (4) ZnBr2 (5) Pb(NO3)2

20. yß;d.dr wdprKh iïnkaOfhka wi;H jkafka

(1) th mDÓúfha WIaK;ajh jeä lrhs'

(2) yß;d.dr wdprKhg odhl jk m%Odk ix>glhls

(3) id.r c, uÜgu wvq ùug yß;d.dr wdprKh fya;= fõ'

(4) wdÈho yß;d.dr wdprKhg fya;= jk jdhQka fõ'

(5) khsg%cka iy Tlaiscka jdhq yß;d.dr wdprKhg odhl fkdfõ'

21. fï m%;sl%shd i,lkak'

A uQ,øjHh → A ys Tlaihsvh →A ys yhsfv%dlaihsvh (X)

B uQ,øjHh → B ys Tlaihsvh → B ys yhsfv%dlaihsvh (Y)

X(aq) + Y (aq) → ,jKh (s) + c,h(l)

(1) S,C (2) Ca , Mg (3) Cl , S (4) S ,Ba (5) S , Mg

22. Fe(OH)3 ys ix;Dma; ødjKhl mj;sk O (aq) whk idkaøKh 1/3 la olajd wvql< úg Fe3+

whk idkaøKh l=uk idOlfhka fjkia fõo@

(1) 1/3 (2) 3 (3) 9 (4) 18 (5) 27

NaOH(aq) dil. H2SO4 NaOH(aq) HNO3 / AgNO3


23. ikakdhl;d fldaIhla 0.50 mol dm-3 KCl ødjKhlska msrjq úg m%;sfrdaOh 243 úh. KCl ødjKfha

ikakdhl;dj 6.67 x 10-3 Scm-1 kï fldaI ksh;h.

(1) 1.62 cm (2) 1.62 cm-1 (3) 1.62 dm-1 (4) 1.62 m-1 (5) 3.2 cm-1

24. weiam%Ska fjkqjg Ndú;d l, yels T!IOhls Ibuprofen. tys jHqyh fufiah'

fï m%ldYk j,ska wi;H jkafka

1. fï ixfhda.h m%ldY il%Sh fõ'

2. fï fidaähu ldnfkaÜ iu. m%;sl%shd ù ldnka vfhdlaihsâ uqod yÍ'

3. fuh C2H5OH iu. m%;sl%shd ù tiag¾ idohs'

4. fuh fn%daóka Èhr újrKh lrhs'

5. fuh wdï,sl fmdgEishï mZuex.fkaÜ u.ska TlaislrKh l< yelsh'

25. my; mßm:fha wefkdavh ms;a;, îskala yd fldm¾ ñY% f,dayhls.& jk w;r lef;davh ma,eákï fõ. h;=r jeiQ úg isÿ úh yels m%;sl%shdjkafka ñka ljrlao@

26. .=Kd;aul úYaf,aIKfha III jk ldKavfha oS, ldKav m%;sldrl tlalsÍug fmr fmrKhg idkaø HNO3

tlalr kgjhs. fuys wruqK jkafka,

(1) Fe2+ whk Fe3+ whk njg TlaislrK lsÍuh.

(2) Fe2+ whk c,õÉfþokh ùu je,elaùug h.

(3) IV ldKavhg wod, whk III ldKavfha oS wjlafIam ùu je,elaùugh.

(4) Ni(OH)2 wjlafIAm ùu je,elaùugh.

(5) NH3 jk ú>gkh jeä lr .ekSug h.

ms;a;,

;kql

H2SO4

Pt wefkdav m%;sl%shdj lef;dav m%;sl%shdj

(1) Zn osh fõ. yhsârcka jdhqj msg fõ.

(2) Zn iy Cu ødjK.; fõ. yhsârcka jdhqj msg fõ.

(3) Cu ødjK.; fõ. fldm¾ wjlafIAm fõ.

(4) Zn iy Cu ødjK.; fõ. fldm¾ wjlafIAm fõ.

(5) Cu ødjK.; fõ. yhsârcka jdhqj msg fõ.


27. c,Sh ødjKhla iïnkaOj i;H jkafka"

(1) w.h idkaøKhg wkqf,dauj iudkqmd;sl fõ'

(2) w.h idkaøKhg m%;sf,dauj iudkqmd;sl fõ'

(3) w.h c,fha iajhx whkSlrK ksh;hg wkqf,dauj iudkqmd;sl fõ'

(4) idkaøKh idkaøKhg wkqf,dauj iudkqmd;sl fõ'

(5) idkaøKh idkaøKhg m%;sf,dauj iudkqmd;sl fõ'

28. 2 – bromo -2-methylbutane we,afldfyd,Sh KOH iu. r;al< úg iEfok tlsfklg fjkia we,alSk

ixLHdj,

(1) 1 (2) 2 (3) 3 (4) 4 (5) 5

29. weuhsfkda wï, ñY%Khl wvx.= ix>gl fjka lsÍu i|yd fyd|u l%uh jkafka"

Nd.sl wdijkh ødjl ksiaidrKh j¾Kf,aL Ys,amh

mqk#iamàlrKh yqud, wdijkh

30. A kï ixfhda.hla c,fha oshlr thg c,Sh NaCl tla l< úg B kï iqÿ wjlafIAmhla ,efí. ;j o B

wjlafIAmh c,fhla ;kql lr kegjQ úg osh úh. tu ødjKhg c,Sh KI ødjKhla tla lr isis,a ùug bv

yeßh úg C kï ly meye;s wjlafIAmhla ,eìKs. ;j o A j,g ;kql HCl tlal< úg jdhqjla msg fkdùh.

A r;a l< úg ÿUqre mdg jdhqjla msgúh. A úh yelafla,

(1) Pb(NO2)2 (2) PbBr2 (3) Pb(NO3)2 (4) AgNO3 (5)Cd(NO2)2

31. NH3 iu. wdfoaY m%;sl%shdjla isÿ l< yelafla ñka ljrlgo@ $ ljr tajdg o

(a) H2O (b) HBr (c)CH3Br (d) [Cu(H2O)6]2+

32. t;fkdhsla wï,h yd t;fkda,a idïm, folla ñY% lr iEfyk fõ,djla ;enQ úg my; iu;=,s;h we;s

fõ.

CH3COOH (l) + CH3CH2OH(l) CH3COOC2H (l) + H2O(l) : = -2 kJ mol-1

iu;=,s;;djfha oS mj;sk CH3CH2OH m%udKh jeä l< yelafla,

(a) moaO;shg ;j;a c,h tla lsÍfuks.

(b) WIAK;ajh wvq lsÍfuks.

(c) moaO;shg W;afma%rlhla tla lsÍfuks.

(d) moaO;shg ;kql c,Sh NaOH tla lsÍfuks.

33. C=N nkaOkh iEÈug bv we;af;a my; ljrla m%;sl%shd jq úgo@

(a) C2 H5 OH yd NH2OH (b) CH3 CONH2 yd P4O10

(c) CH3 COCH3 yd C2H5NH2 (d) CH3 CH2 CHO yd 2,4-dinitrophenylhydrazene


34. fu;keñka cobalt(II) chloride iu. m%;sl%shd l< úg ,eìh yelafla,

(a) [CO(CH3NH2)6]2+ (b) [CO(CH3NH3Cl)6]2+

(c) [CO(CH3NH3)6]2+ (d) [CO(CH3NH2)2(H2O)4]2+

35. yd hk fol u wuqøjH f,i Ndú;jkafka fuka ljrla ksIamdokfha § o@

lvodis hQßhd khsá%la wï,h

36. X keue;s ixfhda.fha ialkaOh wkqj 40.0% ldnka o 6.67% la yhsv%ckao 53.33% la Tlaiscka o

mj;S' X ixfhda.h úh yelafla"

(a) fu;ke,a (b) 2- yhsfv%dlais fm%dmfkdhsla wï,h

(c) tf;dlais tf;aka (d) t;fkdhsla wï,h

37. ue.akSishï ;yvqjla whk wvx.= ødjKhl .s,ajd bf,lafg%davhla ms<sfh, lr

we;' tys bf,lafg%dav úNjh my; ljrla$ljr tAjd u; r|d mj;S o@

(a) ødjKfha idkaøKh u;

(b) ue.akSishï ;yvqfõ j¾.M,h u;

(c) ue.akSishï ;yvqfõ we;s j, m%;sY; ixY=oaO;djh u;

(d) WIaK;ajh u;

38. ish¨ wdï,sl Tlaihsv"

(a) jdhqka fõ'

(b) c,fha Èh fõ'

(c) wf,day Tlaiscka ;=< oykfhka iEfoa'

(d) NIau iu`. m%;sl%shd lr ,jK idohs'

39. yhsârcka f*frdlaihsâ iïnkaOfhka i;H jkafka

a. ixY=oaO yhsârcka f*frdlaihsâ ,d ks,a meye;s ÿiai%dù øjhls'

b. yhsârcka f*frdlaihsâ Tlaisydrlhla f,i fukau Tlaisldrlhla f,i o l%shd lrhs'

c. yhsârcka f*frdlaihsâ wKqfõ we;s - OH ldKav folu tlu ;,hl msysghs'

d. yhsârcka f*frdlaihsâ wdï,sl udOHfha we;s KI iu. m%;sl%shd lr oïmdg ødjKhla ,nd fohs'

40. m%;sj¾;H m%;sl%shdjl bosß m%;sl%shdfõ il%shk Yla;sh 50 kJ mol-1 jk w;r miq m%;sl%shdfõ il%shk Yla;sh

30 kJ mol-1 fõ. fï m%ldYk j,ska i;H jkafka ljrla$ljr tajdo@

(a) bosß m%;sl%shdj ;dm wjfYdaIl fõ.


41. fid,afõ l%uhg wkqrEm l%uhlska fmdgEishï

nhsldnfkaÜ ksmoúh fkdyelsh'

fmdgEishï nhsldnfkaÜ ys c,fha ødjH;djh b;d

wêlh'

42. mrudKqfõ iuia; m%udKh iuÕ ii|k l<

kHIaáfha m%udKh b;d l=vdh'

mrudKqfõ iuia; ialkaOhu jdf.a kHIaáfha

idkaøKh ù we;'

43. c,jdIam yß;d.dr wdjrKhg fya;= fõ.

by<jdhqf.da,fha oS c,jdIam mj;skafka OH. iy H.

f,ih.

44. khsá%la wï,h ksmoùfï§ TiaÜj,aâ l%ufha §

TlaislrKfhka ,nd.kakd jdhqj fl,skau

c,fha Èh l, fkdyels h'

jdhqj fl,skau c,fha Èh lsÍfï§ myiqfjka

>kSNjkh fkdjk khsá%la wï, ÿudrhla iEfoa'

45. yd hk whk wvx.= ødjK folla fjka

lr y÷kd .ekSu i|yd ødjKhla fhdod

.; fkdyels h'

yd hk folu ly meye fõ'

46. *Sfkda,aj, fidähï ,jK c,Sh udOHfha §

mej;sh yels w;r t;fkda,aj, fidaähï ,jK

c,Sh udOHfha mej;sh fkdyelsh'

*Sfkda,aj, wdï,sl .=Kh c,hg jvd jeäjk w;r

t;fkda,a j, wdï,sl .=Kh c,hg jvd wvqh'

47. ksfhdkaj, iïu; m%:u whkSlrK tka;e,amsh

tys iïu; fojeks whkSlrK tka;e,amshg jvd

úYd, h.

ksfhdka mrudKqfõ ndysr Ylaa;s uÜgñka

bf,lafg%dakhla bj;a lsÍfï oS WÉp jdhq úkHdih

ì|Sug isÿfõ.

48. is,aj¾ bf,lafg%dav Ndú; lr is,aj¾ khsfÜ%Ü

ødjKhla úoHq;aúÉfþokh lsÍfï§ wefkdavh Ag+

(aq) f,i ødjK.; fõ'

wefkdavh wi,§ isÿúh yels fjk;a m%;sl%shdjlg

jvd → + (aq) + e hk l%shdjg wjYH

Yla;sh wvqh'

49. ish¨ uQ,øjH w;=ßka by< u m%:u whkSlrK

Yla;shla we;af;a yS,shïj,g h.

ishü uQ,øjH w;=ßka by< u bf,lafg%dak

nkaOq;djhla we;af;a yS,shï j,gh.

50. Ndú;fhka id¾:l j .%Skdâ

m%;sldrlhla ms<sfh, lr.; yelsh'

we,als,a fya,hsv úh<S B;¾ udOHfha we;s

ue.akSishï iu. m%;sl%shd ù we,als,a ue.akSishï

fya,hsv idohs'

ld,h ld oukakdf.a wkd.;h ld,h úiska ld oukq ,efí'''

Wð;a wxck fyaupkaø

(b) bosß m%;sl%shdj ;dmodhl fõ.

(c) fuh m<uqfm< m%;sl%shdjls.

(d) bosß m%;sl%shdj i|yd tka;e,ams úm¾hdih 20 kJ mol-1 fõ.

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BATTLE FIELD MCQ PAPER 23 - drive.apluseducation.lk