MCQ NO 6591- 640

1 CHEMISTRY – UJITH ANJANA HEMACHANDRA

01. CaCO3 yd MgCO3 ñY%Khlska 18.4 gla ;Èka r;a l<úg uq¿ukskau úfhdackh ù ldnkavfhdlaihsâ jdhqj 8.8g la ,efí' ñY%Kfha ;snQ CaCO3 yd MgCO3 j, ujq, m%;sY;h ms<sfj,ska ( Ca = 40, Mg = 24 , O = 16)

(1) 50% , 50% (2) 60% , 40% (3) 40% , 60% (4) 30% , 70% (5) 70% , 30%

02. >k Na2CO3 yd NaHCO3 ñY%Khlska 2.0g la ksh; ialkaOhla ,efnk;=re r;a l<úg ialkaOh

0.12g lska wvq úh'ialkaOh wkqj ñY%Kfha jq Na2CO3 m%;sY;h

(1)83.8% (2)61.2% (3)38.8% (4)16.2% (5)8.38%

03. X kï jdhquh uQ, ÞjHhlska 20cm3 la Y kï uQ, ÞjHhlska jeämqr m%udKhla iu. m%;sl%shd lr X yd y

wvx.= jdhquh ixfhda.hlska 40cm3 la muKla idohs' ish¨ ñkqï tlu WIaK;ajfha § yd mSvkfha § kï

fï o;a; j,ska ks.ukh l, yelafla

1. X ys wKqjlaa ;=, wju jYfhka X mrudKq 2la j;a we;'

2. iEfok ixfhda.h XY fõ'

3. iudk jdhq mrsud j, iudk wKq ixLHdjla we;'

4. X ys wKqjlaa ;=, mrudKq follg jvd ;sìh fkdyelsh'

5. X yd Y j,ska iE§ ixfhda.fha >k;ajhhg jvd X ys >k;ajh wvqh'

04. iyixhqc nkaOk iy whksl nkaOk hk foj¾.hu wvx.= jkafka ñka ljrlo@

(1) CaO (2) CH3F (3) Na2O2 (4) HOCl (5) HCIO4

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

BATTLE FIELD MCQ PAPER 22

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 6591-6640

2 CHEMISTRY– UJITH ANJANA HEMACHANDRA

05. l,s, i,a*¾ idïm,hla ,nd.; yelafla,

(1) jd;h fkdue;s úg i,a*¾ r;a lsÍfuks.

(2) jd;h yuqfõ oS i,a*¾ r;a lsÍfuks.

(3) fidaähï ;fhdai,af*aÜ whäka iu. r;a lsÍfuks.

(4) HNO3 wvx.= c,h ;=<ska H2S jdhqj heùfuks.\

(5) 2000C g jvd by< WIAK;ajhlg r;a l< i,a*¾ c,hg j;alr jyd isis,a lsÍfuks.

06. 1000 0C oS CO(g) iy O2(g) m%;sl%shd ù CO2(g) iEoSug wod< m%;sl%shdfõ iu;=,s;;d ksh;h 1.2 x 102

dm-3 mol-1 fõ. iu;=,s;;dj t<eUqk úg,

(1) CO2 idkaøKh m%;sl%shl tll fyda foflysu fyda idkaøKhg jvd fnfyúka by< h.

(2) CO2 idkaøKh m%;sl%shl tll fyda foflysu fyda idkaøKhg jvd fnfyúka l=vd h.

(3) CO idkaøKh CO2 idkaøKhg jvd fnfyúka by< h.

(4) m%;sl%shl foflys u idkaøKh CO2 idkaøKhg jvd fnfyúka l=vd h.

(5) m%;sl%shl foflys u idkaøKh CO2 idkaøKhg jvd fnfyúka by< h.

07. [Ni(CO)4] ys IUPAC kduh,

(1) Tetracarbonylnickel (II) (2) Tetracarbonylnickelate (II)

(3) Tetracarbonylnickelate (0) (4) Tetracarbonylnickel (0)

(5) Nickel(II) tetracarbonyl

08. yhsv%ckaj, iuia:dkslhla jk á%áhïj, mrudKqjl ialkaOh fõ' wKqjl

ialkaOh fõ' kshqfg%dakhl ialkaOh úh yelafla"

(1) (2) (3)

(4) (5)

09. tla;rd legdhkhl ødjKhl fldgiaj,g idkaøKfhka hq;=

iy whkj, c,Sh ødjK fjk fjku tla lrhs' tA iEu wjia:djl § u by; legdhkh wjlafIam

úh' fï legdhkh úh yelafla"

(1) Ba2+ (2) Fe2+ (3) Mg2+ (4) Pb2+ (5) Zn2+

10. wdï,sl udOHfha§ iron(III)oxalate 1 mol la TlaislrKh lrùug Mn

whk x mol jeh

fõ' wdï,sl udOHfha§ iron(II)oxalate 1 mol la TlaislrKh lrùug Mn whk y mol jeh fõ' x yd y

w;r wkqmd;h jkafka"


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

11. [Al(OH)2(H2O)4]+ ys§ Al j, ix.; wxlh yd TlaislrK wxlh ms<sfj,ska"

(1) 5, +3 (2) 6, +3 (3) 6, +2 (4) 4, +4 (5) 6, +1

12. hk wKql iQ;%h we;s iudjhúl we,aäyhsv ixLHdj"

(1) 6 (2) 5 (3) 4 (4) 3 (5) 2

13. ;Èka r;a l< úg fyda uqod fkdyßkafka ñka ljrla o@

(1) KBrO3 (2) NH4NO3 (3) AgNO3

(4) (NH4)2Cr2O7 (5) BaO2

14. fï m%;sl%shd fY%aKsh i,lkak.

CH3CH2CH2OH X Y fuys Z úh yelafla,

(1) CH3CH2CH2OH (2) CH3CH = CH2

(3) CH3COCH3 (4) CH3CH(OH)CH3

(5) CH3CH2CH2OCH2CH2CH3

15. NaOH ;rug u NdIañl jkafka ñka ljrlao@

(1) CH3NH2 (2) (CH3)2NH (3) (CH3)3N

(4) (5) [N(CH3)4]+

16. fï m%ldYk j,ska i;H fkdjkafka,

(1) laIdÍh mdxY= f,dayj, mrudKql l%udxlh jeäj;a u yhsfv%dlaihsvj, NdIañl m%n,;dj jeä fõ

(2) laIdÍh mdxY= f,dayj, mrudKql l%udxlh jeäjk úg ldnfkag yd i,af*agj, c,fha ødjH;dj

jeä fõ.

(3) laIdÍh mdxY= f,dayj, i,af*ag ;dm ia:dhs h.

(4) laIdÍh mdxY= f,day ldnfkag ;dmfhka úfhdackh fõ.

(5) laIdÍh mdxY= f,dayhkaf.a nhsldnfkag ia:dhS j mj;skafka c,Sh ødjKfha oS muKs.

NH2 CH3 CH3

CH3

PBr3 we,afldfyd,a KOH

∆

i. id. H2SO4

ii. H2O / ∆


17. 250C oS isiShï f,dayh mrudKq ujq,hllg c,h tla lr ødjK 1 dm3 la ms<sfh, ;r.kS. ,efnk

ødjKfha we;s H3O+(aq) whk idkaøKh,

(1) 5 x 10-14 mol dm-3 (2) 2 x 10-14 mol dm-3

(3) 1 x 10-14 mol dm-3 (4) 5 x 10-15 mol dm-3 (5) 1 mol dm-3

18. wdj¾;s;d j.=fj d- f.dkqjg wh;a jk Sc isg Zn olajd jQ uQ, ÞjH iïnkaOj i;H jkafka"

1. fï uq, øjH ish,a, [X (H2O)m]n+

wdldr j¾Kj;a whk idohs' 2. fï ish,af,au N+ñ wjia:dfõ mj;sk mrudKqj, úhq.au bf,lafg%dak tlla fyda jeä ixLHdjla

we;' 3. fï ish,af,au ixfhdacs; ;;ajfha § TlaislrK wxl tlllg jvd jeä ixLHdjla fmkajhs' 4. Sc isg Mn olajd h;au Wmßu TlaislrK wxlh l%ufhka jeäjqjo bkamiq Wmßu TlaislrK

wxlh l%ufhka wvq ùug mgka .kS' 5. fï ish¨ uq,ÞjH wdka;ßl uQ,øjH f,i yÿkajhs'

19.

ñka ljrla weks,ska j,g jvd NdIAñl;djfhka jeäfõo@ (1) (2) (3)

(4) (5)

20. AB(g), A2(g) yd B2(g) hk oaúmrudKql m%fNaoj, iïu; nkaOk tka;e,amSkaf.a wkqmd;h 2:2:1 fõ A2(g) yd B2(g) j,ska AB(g) W;amdokh ùfï iïu; tka;e,amsh -100kJmol-1 fõ' A(g) iïu; W;amdok tka;e,amsh kJmol-1 j,ska (1)400 (2) 300 (3)200 (4)100 (5)50

21. Y kï ixfhda.h c,Sh Na2CO3 iu`. m%;sl%shd fkdjqjo c,Sh NaOH iu`. m%;sl%shd fõ' th fí%â m%;sldrlh

iu`. wjlafIamhla ,nd ÿkako f*a,sx ødjKh TlaisyrKh fkdlrhs' Y ùug jvd;a u bv we;af;a"

CH2OH

(1) HOOCCH2CH2COCH3 (2) HO CH2CH2COH (3) COCH3 COCH2CH2 CH2CH3 CH2CH2OH

(4) (5) COH OH

NH2 CN

NH2 CH2CH3

NH2

NO2 O

║

CH3 ─ C NH2

H O

| ║

N─ C ─CH3


22. OH |

2CH3CH2COH CH3CH2 – CHCHCOH hk m%;sl%shdjg wod< w;rueÈ m%fNaoh jkafka" |

CH3

(1) ⊕CH2CH2OH (2) ⊖CH2CH2COH (3) C ⊕ CHCOH

(4) C ⊖CHCOH (5) CH3C

⊕CO

23. fldfnda,aÜ ys ix.; ixlS¾Khl ;=< wefudakshd la o khsfg%da ldKav ujq,hla o mj;S' ;j o

tla fldafnda,aÜ mrudKqjla fjkqfjka laf,daÍka mrudKq la o mj;S' c,Sh udOHfha § tu ixlS¾Kfha

ujq,hlska whk la iEfoa' fï ødjKh jeämqr iu. m%;sl%shd lr jQ úg jydu la

wjlafIam fõ' by; lS ixlS¾K ixfhda.fha iQ;%h úh yelafla"

(1) [CoCI(NO2)(NH3)4](NH3)Cl (2) [CoCI(NH3)5][Cl(NO2)]

(3) [Co(NO2)(NH3)3]Cl2 (4) [Co(NH3)5][(NO2)2Cl2]

(5) [CoCI2(NH3)5]NO2

24. weñfkdi,af*daksla wï,h, H2NSO2OH khsg%ia wï,h iu. m%;sl%sh l< úg ieoSug jvd;a bv we;af;a, (1) NH3 (2) N2 (3) NO2 (4) NO (5) SO2

25. ≡ 2COCH2CH3 ys IUPAC kduh"

(1) 1 – methylpent – 4 – yn – 2 – one (2) 1 – ethylbut – 3 – yn – 1 – one

(3) hex – 5 – yn – 3 – one (4) hex – 1 – yne – 4 – one

(5) 1 – ethylbut – 2 - one

26. fuu m%ldYkj,ska wi;H jkafka"

(1) m%d:ñl weók wka;¾ wKql yhsv%cka nkaOk idohs'

(2) oaú;shsl weók wka;¾ wKql yhsv%cka nkaOk idohs'

(3) ;D;shsl weók wka;¾ wKql yhsv%cka nkaOk idohs'

(4) wdikakj iudk idfmalaI wKql ialkaOhla we;s we,afldfyd, fyda ldfndlais,sl wï,j,

;dmdxlhkag jvd m%d:ñl weókj, ;dmdxl wvq w.hka fõ'

(5) weók" we,als,a fya,hsv iu`. m%;sl%shd lr we,als,a wefudakshï ,jK idohs'

1


27. lsishï øjhhla i|yd w|sk ,o l,dm igykla my; oelafõ. 0.5 atm ksh; mSvkfha oS WIaK;ajh 0 OC

isg 600C olajd jeä l< úg isÿjk úm¾hdih jkafka,

28. la yd c,h la wvx.= ma,dial=jlg c,Sh ødjKhlska

la tl;= lrhs' ma,dial=fõ ;sfnk oE fydÈka ñY% lrk ,§' ma,dial=fõ we;s c,Sh ia:rfhka la

uq¿ukskau WodiSk lsÍug ødjKhlska la jeh úh' ⁄ i|yd

ys jHdma;s ix.=Klh"

(1) 5.0 (2) 4.0 (3) 2.5 (4) 0.5 (5) 0.25

29. X kue;s f,dayfha ú,Sk ,jKhla wvx.= úoHq;a úÉfþok fldaIhla ;=<ska 10.0 A Odrdjla meh 2 la ;siafia

hjk ,oS. lef;davh u; X ys 0.250 mol la ksê.; úh. ,jKh ;=< oS X ys TlaislrK wxlh (1 F =

96500 C mol-1)

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

30. jdhq l,dmfha § yd mßmQ¾K jdhQka f,i yeisf¾ hehs i,lk úg yd

hk jHqy iudjhúlj, ljr .=Khla tlsfklg iudk fõ o@

(1) jdIamSlrK tka;e,ams

(2) tl u WIaK;ajhl § ix;Dma; jdYam mSvk

(3) ;dmdxl

(4) tl u WIaK;ajfha § yd mSvkfha § jdhq l,dmfha >k;aj

(5) úh,kfha .=ma;;dmh

31. my; ljr iuqyhl§ $ iuqyj,§ jfï isg ol=Kg hk úg i`oyka lr we;s .=Kh jeäfõo@ (a) CH3 COCH3, CH3COOH yd H2NCH2COOH ys ;dmdxlh

(b) -C(CH3)3,-CH(CH3)2 yd -CH3 hk ldíwekdhkj, ia:dhs;dj

(c) CH3CH2CH2CH2CH3, (CH3)2CHCH2CH3 yd (CH3)3C ys ;dmdxlh

5

1.0

1.5

2.0

2.5

20 40 60 80 100 120 140

WIAK;ajh (0C)

mSvkh (1) W!¾Ojmd;kh

(2) >kSNjkh

(3) jdIAmSlrKh

(4) ú,hkh

(5) >kSlrKh


(d) CH4, NH3yd H2O ys nkaOk fldaKh

32. wï, jeis ksid my; ljrla $ ljr tajd isÿúh yelso@

(a) ú,a iy jeõj, we;s c,fha pH w.h wvq ùu.

(b) jdhqf.da,fha WKqiqï ùu.

(c) ´fidaka úhk ;=kS ùu.

(d) yqKq.,a yd udn,a j,ska iEÿ m%;sud úLdokh ùu.

33. ixY+oaO whka (II) laf,darhsâ ødjKhla iïnkaOfhka i;H jkafka,

(a) th fmdgEishï fylaidihfkdf*f¾Ü (III) ødjKhla iu. m%;sl%shd lrjQ úg ;o ks,a meye;s

wjlafIAmhla ,ndfohs.

(b) th wdï,sl K2Cr2O7 ødjKhla iu. m%;sl%shd lrjQ úg fld< meye;s ødjKhla ,ndfohs.

(c) th jeämqr fn%daóka oshr iu. kegjQ úg ly meye;s ødjKhla ,ndfohs.

(d) th fmdgEishï ;fhdaihfkaÜ ødjKhla iu. m%;sl%shd lrjQ úg r;= meye;s ødjKhla ,ndfohs.

34. fïjdhska iïm%hqla; jHqy hq.,hla $ hq., jkafka,

(a) H3C – C – CH3 yd CH2 = C – CH3

||

O (b) CH3CN yd CH3NC

(c) CH3 – C ≡ O+ yd H3C – C+ = O

(d) H2C = C – OH yd –CH2 – C = O – H

35. *Sfkda, j, fnkaiSka j,hg ñka ljr ldKavhla $ldKav iïnkaOj we;súg tys wdï,sl .=Kh jeäfõo@ N 2 CH3 NH2

36. jdIamYS,S ødjlhla ;=< wjdIamYS,s úoHq;a wúÉfþohla ;=< Èh lsÍfuka ms<sfh, lr.;a ødjKhl idfmalaI

jdIam mSvk md;kh fõ' fuu ødjKh ;=< we;s uq¿ ujq, ixLHdj la kï ñka i;H jkafka"

(a) ødjHhfha ujq, ixLHdj fõ'

(b) ødjHhfha ujq, Nd.h fõ'

OH

H H

+


(c) ødjlfha ujq, ixLHdj fõ'

(d) ødjlfha ujq, Nd.h fõ'

37. fï m%;sl%shd oduh i,lkak.

(CH3)2CHCH2CH3 (CH3)2CClCH2CH3 (CH3)2C(OH)CH2CH3

(CH3)2C(CN)CH2CH3 (CH3)2CBrCH2CH3 (CH3)2 C = CHCH3

fï m%;sl%shd wkql%uh yd iïnkaO jk hka;%K jkafka,

(a) bf,afg%da*s,sl wdl,kh

(b) kshqla,sfhda*s,sl wdfoaYh

(c) uqla;Lxvl hka;%Kh

(d) kshqla,sfhda*s,sl wdl,kh

38. fïjdhska i;H fkdjkafka ljrlao@ ljr tajdo@

(a) mrudKql ldlaIslhl yevh WoaÈ.xY lafjdkagï wxlh ^weisñhq;,a lafjdkagï wxlh& u; r|d

mj;S'

(b) mrudKql ldlaIslhl ÈYdk;sh pqïnl lafjdkagï wxlh u; r|d mj;S'

(c) nyq bf,lafg%dak moaO;shl jq hï bf,lafg%dakhl Yla;sh" m%Odk lafjdkagï wxlh u; muKla

r|d mj;S'

(d) mrudKqjl jq ish¨ p ldlaIsl úYd,;ajfhka tl yd iudk fõ'

39. 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.

(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.

40. iïnkaOj i;H jkafka"

(a) th wdï,sl u.ska TlaislrKhg ,la fõ'

(b) tys kduh fõ'

(c) th fu;s,aweóka iu. ,jK idohs'

(d) th t;fkdhsla wï,hg jvd ÿ¾j, wï,hls'


41. t;keuhsâ ,sÜuia flf¾ WodiSk fõ' t;keuhsâys wKq w;r yhsv%cka nkaOk we;'

42. BeF2 O%eùh wKqjls' *a¨fjdßka j, úoHq;a iDK;dj Be j, úoHq;a iDK;djhg jvd úYd,h'

43.

hkq H2CO3 ys ixhq.aul wï,hhs.

whkh H+ whkhla ,nd.;a úg H2CO3 njg

m;afõ.

44. mdkSh c,fha whk ñil

whk mej;Su

fi!LHhg ydkslr ke;.

whk oaú;Shsl weók iu. idok

khsfg%dfidweók ms<sldldrlhls.

45. fuf;dfkdhsla wï,h iy tf;dfkdhsla wï,h

fjkalr yÿkd .ekSu ioyd wdï,sl fmdgEishï mZuex.fkaÜ ødjKhla Ndú; l< fkdyelsh'

ish¨ ldfndlais,ala wï, Tlaisldrl flfrys m%;sfrdaOhla olajhs'

46. fidaähï ldnfkaÜ c,Sh ødjKhla úoHq;a

úÉfþokfhka fidaähï f,dayh ,nd.; yelsh'

iEfok u.ska fidaähï TlaislrKh ùu j<lS'

47. Pt(s) , Cl2(g) / Cl- (aq) bf,lafg%davfha iïu;

bf,lafg%dav úNjfha Ok;djh Pt(s), F2(g) / F-

(aq) bf,lafg%davfha iïu; bf,lafg%dav úNjfha

Ok;djhg jvd úYd, h.

wdj¾;s;d j.=fõ oS laf,daÍka, *a¨fjdÍkaj,g háka

msysgd we;.

48. fidaähï f,dayh fmdgEishï f,dayhg jvd ;oh' fidaähï mj;sk f,dayl nkaOk fmdgEishïj,

mj;sk f,dayl nkaOkj,g jvd m%n,h'

49. NH3 jdhqj iy HCl jdhqj m%;sl%shd ù >k NH4Cl

iEoSu wï, - NIau ms<sn| wdySkshia jdoh u.ska

meyeos,s l< fkdyelsh.

wï, - NIau ms<sn| wdySkshia jdoh c,Sh udOHhg

muKla iSud ù mj;S.

50. jeämqr c,Sh wefudakshd ;=< Èh jqjo

Èh fkdfõ'

Tlaisckaj, úoHq;a RK;djh laf,daÍka j,g jvd

jeäh'


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

Wð;a wxck fyaupkaø

MCQ NO 6591- 640

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