G.C.E A/L
Chemistry
,urhadf; fzpg;Gf;fs;
Nru;itfspd; ntg;gg; gpupif
Mr. M.R. Fahumudeen
01. gpd;tUtdw;wpy; vJ ntg;gkhf;fg;gLk;NghJ CO2 I cldbahfj; juj;jf;fjhFk;?
1. Li2CO3
2. Na2CO3
3. K2CO3
4. Rb2CO3
5. Cs2CO3
(1995 Aug 12)
02. gpd;tUtdtw;wpy; vjid ntg;gkhf;Fk;NghJ NO2 ngwg;glkhl;lhJ?
1. Ca(NO3)2
2. CsNO3
3. Cd(NO3)2
4. Al(NO3)2
5. Pb(NO3)2
(1995 Aug 22)
03. gpd;tUk; Nru;itfspy; ntg;gj;jpw;F kpff; Fiwthd cWjpiaAila xl;irl;L>
1. CaO
2. Na2O
3. CuO
4. Ag2 O
5. ZnO
(2007 Aug 02)
04. ntg;gNkw;Wk; nghOJ gpd;tUk; Nru;itfSs; kpf tpiuthf xl;rpridj; jUtJ>
1. SnO2
2. I2O
3. NaNO2
4. Fe2(CO3)3
5. BaO2
(1990 Aug 30)
05. gpd;tUtdtw;Ws; vr;Nru;it> #lhf;Fk;NghJ ,yFthfg; gpupifaila khl;lhJ?
1. PbO2
2. SrO
3. Ag2 O
4. BaCO3
5. I2O5
06. gpd;tUtdw;wpy; vJ / vit ntg;gkhf;fypd; NghJ NO2 itj; jUk;?
a) CsNO3
b) Ba(NO3)2
c) Ni(NO3)2
d) NH4NO3
(1994 Aug 33)
07. gpd;tUtdtw;wpy; vJ ntg;gNkw;wg;gl;l NghJ Fiwe;j ntg;gepiyapy; CO2 itj; jUk;?
1. BaCO3 ,dhy; epuk;gpa fiurnyhd;W
2. K2CO3 ePu;f;fiury;
3. MgCO3 ,dhy; epuk;gpa ePu;f;fiurnyhd;W
4. NaHCO3 ePu;f;fiury;
5. Ca(HCO3)2 ePu;f;fiury;
(1999 Aug 58)
08. #lhf;Fk;NghJ N2O4 Ig; ngw;Wf; nfhLf;Fk; Nru;it gpd;tUtdtw;Ws; vJ?
1. N2O
2. HNO3
3. NaNO3
4. NH4NO3
5. (NH4)2Cr2O7
(1987 Aug 12)
09. gpd;tUk; Nru;itfspy; vJ #lhf;fypd;NghJ iejurdpd; xl;irl;nlhd;iw tpisTfspy;
xd;whf cz;lhf;Ffpd;wJ?
1. (NH4)2 CO3
2. NH4NO2
3. NH4NO3
4. (NH4)2 Cr2O7 5. (NH4)2 SO4
(2007 Aug 31)
10.mNkhdpak; cg;n ghd;W Kw;w hf ntg;gg;gpupifaile;J ePU k; thAnthd;W k; khj;jpuk;
tpisnghUshfj; jUfpd;wJ. ngwg;gl;l thA iejurDky;y. mNkhdpahTky;y. mNkhdpak;
cg;gpd; mdad; MtJ>
1. SO422. NO33. Cr2O724. NO25. CO32(2001 Aug 12)
11. gpd;tUk; Nru;itfspy; vJ / vit ntg;gkhf;fg;gLk;NghJ xU %y thAitj; jUfpd;wdJ /
jUfpd;wd?
A) (NH4)2 CO3
B) NH4Cl
C) NH4NO2
D) NH4NO3 E) (NH4)2 Cr2O7
1. A khj;jpuk;
2. B khj;jpuk;
3. E khj;jpuk;
4. A, B khj;jpuk; 5. C, D khj;jpuk;
(2012 Aug 30)
12. A, B, C, D Mfpatw;wpy; vit #lhf;fypd;NghJ NH3(g) I ntsptpLfpd;wd?
A) (NH4)2 Cr2O7
B) NH4Cl
C) (NH4)2CO3
D) NH4NO3
1. A ck; B ck;
2. B ck; C ck;
3. C ck; D ck;
4. A ck; D ck;
5. B ck; D ck;
(2007 Agu 15)
13. Nrhbak; fhgNdw;wpdJk; Nrhbak; Ijurd; fhgNdw;wpdJk; xU 4.0g fyit ntg;gkhf;fg;gl;l
NghJ jpzptpy; cs;s ,og;G 0.31g Mf ,Ue;jJ. fyitapy; Nrhbak; fhgNdw;wpd; jpzptpd;
rjtPjk;> (H=1, C=12, O=16, Na=23)
1.
95
2. 90
3. 83
4. 79
5. 63
(2010 Aug 14)
3.0
-1-
Mr. M. R. Fahumudeen
14. ePuw;w Na2CO3 ,dJk; NaHCO3 ,dJk; fyit xd;wpd; jpzpT 2.00g MFk;. NkYk; fyitapd;
g+uz ntg;gg;gpupifapd; gpd; 1.85g kpFjp fhzg;gl;lJ. NaHCO3 ,d; jpzpTr; rjtPjj;ijf;
fhz;f.
1. 20.25%
2. 20%
3. 18%
4. 33%
5. 80%
15. jpzpT tpfpjk; 1:2 MfTs;s CaCO3, KHCO3 fyitapd; 6g Kw;whd ntg;gg; gpupiff;F cl;gLj;jpa
NghJ tpisthFk; jpz;k kPjpapd; jpzpT> (Ca-40, K - 39, O-16, C-12, H-1)
1. 0.97g
2. 1.94g
3. 3.88g
4. 5.82g
5. 7.76g
16. SrCO3 IAk; BaCO3 IAk; khj;jpuk; nfhz;l xU khjpupapd; jpzpT 0.800g MFk;. ,k;khjpupia
kpifahd Ijhd mkpyj;jpy; fiuf;Fk; NghJ epak ntg;gepiyapYk; mKf;fj;jpYk; tpLtpff
; g;gLk;
3
CO2 thAtpd; fdtsT 0.112 dm MFk;. ,k;khjpupapy; SrCO3 ,d; jpzpTr; rjtPjk;>
(C = 12, O = 16, Sr = 88, Ba = 137)
1. 30
2. 56
3. 70
4. 80
5. 84
(2011 Aug 08)
17. H2O2 ,d; xU ePu;f; fiurypd; 1.0 dm3 MdJ xU Kw;whd $l;lg;gpupTf;F ntg;gkhf;fg;gl;lJ.
ntsptplg;gl;l xl;rprdpd; fdtsT ep.nt.m ,y; 8.0 dm3 Mf ,Ue;jJ. H2O2 fiurypd; nrwpT
(mol dm-3 ,y;) (ep.nt.m. ,y; O2 ,d; xU %ypd; fdtsT = 22.4dm3)
1. 0.31
2. 0.35
3. 0.62
4. 0.71
5. 3.2
(2010 Aug 33)
18. NaNO3 cld; khrile;j Pb(NO3)2 ,d; 0.331 g khjpup xd;W 100.0 cm3 ePupy; fiuf;fg;gl;lJ.
gpd;du; tPo;gbthf;fk; g+uzkilAk; tiu ,f;fiurypD}lhf kpifahd H2S thA Fkpopaplr;
nra;ag;gl;lJ. cyu;j;jpa tPo;gbtpd; jpzpT 0.200 g Mf ,Ue;jJ. ,k;khjpupapd; rjtPjj;
J}a;ik (w/w) mz;zsthf> (N=14, O=16, S=32, Pb=207)
1. 16
2. 47
3. 68
4. 79
5. 84
(2010 Aug 21)
19. xU cNyhfk; M MdJ mjDila ry;ngw;W> M2(SO4)3 Mf khw;wg;gl;lJ. ,r;ry;Ngw;wpd;
fiurnyhd;W Pb(NO3)2cld; njhopw;gl tplg;gl;L PbSO4 ngwg;gl;lJ. M ,d; 1.04g MdJ
PbSO4 ,d; 9.09g (cyu; jpzpT) If; nfhLj;jpUg;gpd; cNyhfk; M MdJ>
1. Al
2. Cr
3. Fe
4. Co
5. Ga
(2008 Aug 21)
20. H2(g) ,d; Kd;dpiyapy; TiO2 #lhf;fg;gLk; ijj;Njdpaj;jpd; ,d;ndhU xl;irl;L cUthfpd;wJ.
TiO2 ,d; 1.600 g MdJ ,t; xl;irl;bd; 1.440 g I cz;lhf;Fkhdhy; ,e;j xl;irl;bdJ
#j;jpuk;>
1. TiO
2. Ti2O3
3. Ti2O
4. Ti3O4
5. Ti2O2
(2008 Aug 18)
21. xU tYtsT 5.0g cNyhfj;jpd; ePuw;w FNshiul;L mjd; ePuw;w ry;Ngw;whf Kw;whf khw;wg;gl;l
NghJ 6.0g ePuw;w ry;Ngw;iwf; nfhLj;jJ. (H-1, Cl-35.5, S-32, O-16) cNyhfj;jpd; rhu;mZj;jpzpT
MdJ>
1. 20
2. 24
3. 27
4. 35
5. 43
22. fhw;wpy; (A)Ar, (B)CO2, (C)H2, (D)N2, (E)O2 Mfpa thAf;fspd; fdtstpyhd rjtPjk; FiwAk; tupir>
1. D > E > B > A > C
2. D > E > A > B > C
3. D > E > B > C > A
4. E > D > A > B > C
5. D > A > E > B > C
23. tsp rk;ge;jkhd gpd;tUk; $w;Wf;fspy; vJ / vit cz;ikahdJ / cz;ikahdit?
a) Ar I tpl mjpf H2 I tsp nfhz;Ls;sJ.
b) mz;zsthf N2 ,d; %y; rjtPjk; 78IAk; O2 ,d; %y; rjtPjk; 21IAk; tsp nfhz;Ls;sJ.
c) CO2 I tpl mjpf Ar I tsp nfhz;Ls;sJ.
d) Ar I tpl mjpf He I tsp nfhz;Ls;sJ.
24. gpd;tUk; $l;lq;fspy; SI myfpy; khj;jpuk; cs;s $l;lk; vJ?
1. tu;f;f kPw;wu;> fy;tpd;> fpuhk;
2. nrd;upfpNwl;> ghiffs;> fpNyhfpuhk;> fdkPw;wu;
3. tspkz;lyq;fs;> yPw;wu;> g];f;fy; 4. fpNyhfpuhk;> g];f;fy;> nfy;tpd;
5. nfy;tpd;> tspkz;lyq;fs;> epa+w;wd;
(2001 Apr 28)
3.0
-2-
Mr. M. R. Fahumudeen
25. ,ypjpak; %yfk; gw;wpg; gpd;tUk; $w;Wf;fspy; vJ cz;ikahdJ?
1. ,ypjpak; tspapy; vupe;J Li2O, LiN3 Mfpatw;iw cz;lhf;Ffpd;wJ.
2. ,ypjpak; xU jpz;k Ijurd; fhgNdw;whfpa LiHCO3 I cz;lhf;Ffpd;wJ.
3. Vida $l;lk; 1 ,d; cNyhfq;fspYk; ghu;f;f ePUld; ,ypjpak; Fiwe;j typikAld;
jhf;fk; Gupfpd;wJ.
4. ,ypjpak; fhgNdw;W ntg;gj;jpw;F cWjpahdJ.
5. ,ypjpak; iej;jpNuw;W ntg;gkhf;fg;gLk;NghJ xNu thAthf O2Ij; jUfpd;wJ.
(2010 Aug 27)
26. xU ePNuw;wpa cNyhff; fhgNdw;W MCO3.4H2O ,d; 15.6g ,d; ntg;gg; gpupif cNyhf
xl;irl;bd; 4.0 g I cz;lhf;Ffpd;wJ. cNyhfk; M ,d; rhu; mZj;jpzpT>
1. 63.5
2. 56
3. 40
4. 26
5. 24
(2012 Aug 08)
27. Fe2 O3 ,dJk; FeO ,dJk; xU fyit jpzpTf;Nfw;g 72.6% Fe If; nfhz;bUg;gjhff;
fhzg;gl;Ls;sJ. ,f;fyitapd; 1.0g ,y; cs;s Fe2O3 ,d; jpzpT> (O = 16, Fe = 56)
1. 0.37 g
2. 0.52 g
3. 0.67 g
4. 0.74 g
5. 0.83 g
(2013 Aug 7)
28. xU fyg;GNyhfkhdJ kfdPrpaj;ijAk; fy;rpaj;ijAk; nfhz;Ls;sJ. 1.000g epiwAs;s
,f;fyg;GNyhfk; Ijhd HCl cld; jhf;fKw;W ep.nt.m tpy; 0.7841 Ijurd; thAitf; nfhLf;Fk;.
ep.nt.m tpy; Ijurdpd; %yu;f;fdtsT 22.41 vdpd; ,f;fyg;GNyhfj;jpy; cs;s kf;dPrpaj;jpd;
E}w;W tPj epiwiaf; fzpf;f. (Mg = 24.00, Ca= 40.00)
29. $l;lk; IA %yfq;fspy; iejurd; thATld; jhf;fk; GuptJ Li khj;jpuNkahFk;. xU gupNrhjidapy;
Li ,d; 51g MdJ N2 ,d; 39g cld; jhf;fk; Gupa tplg;gLfpd;wJ. gpd;tUk; $w;Wf;fspy; vJ/
vit cz;ikahdJ / cz;ikahdit?
(Li = 7, N = 14)
a) Li Kw;whfj; jhf;fk; Gupe;J> rpwpjsT N2 vQ;rpapUf;Fk;.
b) N2 kw;whfj; jhf;fk; Gupe;J> rpwpjsT Li vQ;rpapUf;Fk;.
c) Li ck; N2 ck; Kw;whfj; jhf;fk; Guptjpy;iy.
d) mwpKiwapy; cz;lhFk; tpisnghUspd; msT 85g MFk;.
(2012 Aug 40)
30. xU jpz;k khjpup CaCO3, MgCO3 Mfpatw;iw khj;jpuk; nfhz;Ls;sJ. khjpupapy; cs;s
CaCO3 clDk;
MgCO3 clDk; Kw;whfj; jhf;fk; Guptjw;F 0.088 M HCl ,d; 42.00 cm3
Njitg;gl;lJ. tbjputj;ij Mtpahf;Ftjd; %yk; ngwg;gl;l jhf;fj;jpy; cz;lhfpa ePuw;w
FNshiul;L cg;Gf;fspd; epiw 0.19 g MFk;. jpz;k khjpupapy; cs;s CaCO3 ,d; jpzpT>
(C = 12, O = 16, Mg = 24, Ca = 40, Cl = 35.5)
1. 0.05g
2. 0.07g
3. 0.09g
4. 0.11g
5. 0.12g
(2013 Aug 30)
31. gpd;tUtdtw;wpy; vJ / vit ntg;gj;jpw;F epwKs;s tpisT / tpisTfisj; jUk;?
a) ZnCO3(s)
b) Ag2CO3(s)
c) (NH4)2Cr2O7(s) d) LiNO3(s)
32. gpd;tUtdtw;wpy; vJ ntg;gg; gpupif milahJ?
1. PbO2
2. SrO2
3. HNO3
33.
\=/
/
_
\_
/
CHO
3.0
4. MgSO4
5. MnO2
(rpw;wndy;yh) ,dJ xU %ypd; jfdj;jpw;Fj; Njitahd O2 ,d; %y;
vz;zpf;if>
1. 10.5
2. 11.25
3. 12.25
4. 12.5
5. rupahd tpil jug;gltpy;iy
-3-
Mr. M. R. Fahumudeen
G.C.E A/L
Chemistry
3.0 ,urhadf; fzpg;Gf;fs;
Nru;itfspd; ntg;gg; gpupif
Mr. M.R. Fahumudeen
01) CaCO3 : MgCO3 %y; tpfpjk; 1 : x vd;wthW tuf;$bajhf ed;whfj; J}shf;fpa fyitnahd;W
jahupf;fg;gl;lJ. ,J Ntnwe;j gjhu;j;jq;fisf; nfhz;bUf;ftpy;iy. ,e;j fyitapd; 1.30g
Kw;whf CaO MfTk; MgO MfTk; khWk; tiuf;Fk; fLikahf ntg;gNkw;wg;gl;lJ. ,t;thW
ngwg;gl;l xl;irl;Lf;fspd; fyitapd; jpzpT 0.640g MFk;.
,q;F nghUj;jkhd rhu; mZj;jpzpTfs; gpd;tUkhW>
Ca = 40.0, Mg = 24.0, O = 16.0g, C = 12.0
i. ,g;nghOJ fPNo jug;gl;Ls;s fzpjf; Nfhitapy; P, Q, R, S Mfpatw;iw ftdj;jpw; nfhs;f.
100  P  x
QRx
02)
03)
04)
05)

1.30g
S
P, Q, R, S Mfpatw;Wf;Fg; nghUj;khd ngWkhdq;fisf; fPNo jug;gl;Ls;s ml;ltizapy;
vOJf.
ii. ,g;ngWkhdq;fspy; NkNy jug;gl;Ls;s fzpjf; Nfhitapy; nghUj;jkhd tpjj;jpy; gpujpapl;L
x ,d; ngWkhj;ijf; fhz;f.
(1999/2b)
ed;whfj; J}s; nra;ag;gl;l CaCO3 ck; MgCO3 ck; mlq;fpa 0.92g fyitnahd;W mjpAau;
ntg;gepiyf;F ntg;gNkw;wg;gl;lNghJ CaO ck; MgO ck; khj;jpuk; mlq;fpa 0.48g fyitnahd;W
ngwg;gl;lJ. Muk;g fyitapy; CaCO3 ,d; rjtPjj; jpzpitf; fhz;f.
(rhu; mZj;jpzpTfs; : C = 12, O = 16, Mg = 24, Ca = 40)
(2001/8d)
KNO3, Ba(NO3)2 Mfpatw;iwf; nfhz;l fyitapy; 0.564g I ntg;gg; gpupif milar; nra;j
NghJ 0.408g jpzpTs;s KNO2, BaO Mfpatw;iwf; nfhz;l fyit fpilj;jJ. fyitapy;
cs;s KNO3 ,d; rjtPjj;ij jpzpTf;Nfw;g fzpf;f.
(1992/2c)
fyit xd;wpNy KNO3, NaNO3 Mfpad kl;Lk; cs;sd. fyitapd; 0.465g MdJ ntg;gg;
gpupiff;F cl;gLj;jg;gl;lNghJ xl;rprd; thA tpLtpf;fg;gl;l gpdd
; u; vQ;rpa tpisTg; nghUspd;
jpzpT 0.385g Mf ,Ue;jJ. fyitapy; cs;s KNO3 ,d; %y; rjtPjj;ijf; fzpf;f.
(K = 39.0, Na = 23.0, N = 14.0, O = 16.0)
(1991/spe/2c)
ed;whfj; J}s; nra;ag;gl;l CaCO3 ck; MgCO3 ck; mlq;fpa 0.92g fyitnahd;W mjpAau;
ntg;gepiyf;F ntg;gNkw;wg;gl;l NghJ CaO ck; MgO ck; khj;jpuk; mlq;fpa 0.48g fyitnahd;W
ngwg;gl;lJ. Muk;gf; fyitapy; CaCO3 ,d; rjtPjj; jpzpitf; fzpf;f.
(rhu; mZj;jpzpTfs; : C = 12, O = 16, Mg = 24, Ca = 40)
06) CaCO3 IAk; (NH4)2CO2 IAk; nfhz;l fyit xd;wpy; 0.511g MdJ typikahf ntg;gkhf;Ftjd;
%yk; Kw;whfg; gpupifAwr; nra;ag;gl;lJ. ,jd;NghJ vQ;rpapUf;Fk; kPjpapd; jpzpT 0.098g
Mf ,Ue;jJ. fyitapNy CaCO3 : (NH4)2CO3 %y; tpfpjj;ij fzpf;f.
(H = 1, O =16, C - 12, N = 14, Ca = 40)
07) CaC2O4 (S)   CaCO3(S) + CO(g) vd;w rkd;ghl;Lf;F mika fy;rpak; xf;rNyw;W MdJ
ntg;gNkw;wpa NghJ> fy;rpak; fhgNdw;whf khw;wkile;jJ. 2.00g J}a CaC2O4(s) KOik
ngwhj ntg;gg; gpupifahy; 1.78g tpisnghUisf; nfhLj;jJ. tpisnghUs; CaCO3 IAk;
gpupifailahj CaC2O4 IAk; nfhz;bUf;Fk;. ,t; tpisnghUspy; vQ;rpapUf;Fk; gpupifailahj
CaC2O4 ,d; jpzpitf; fPNo fzpf;f.
(rhu; mZj;jpzpTfs; : C = 12, O = 16, Ca = 40)
3.0
-4-
Mr. M. R. Fahumudeen
08) xU fyit CaCO3, MgCO3, SiO2 Mfpatw;iw khj;jpuk; nfhz;Ls;sJ. CaCO3 : MgCO3 ,dJ
%yu; tpfpjk; 1 : 1 MFk;. ,f;fyitapdJ 2.00 g khwhj; jpzpT ngwg;gLk; tiu fLikahf
ntg;gNkw;wg;gl;lNghJ > ngwg;gl;l kPjpapDila jpzpT 1.12 g MFk;. fyitapYs;s xt;nthU
$WdpdJk; jpzpT rjtPjj;ijf; fzpf;f.
(Ca = 40.0, Mg = 24.0, Si = 28.0, O = 16.0)
(2006/10b)
09) CrO3(s) MdJ ntg;gkhf;fg;gLk;NghJ gpupifaile;J Cr 2O3(s) IAk; O2(g) IAk; khj;j puk;
tpisnghUshf jUfpdw
; J. Cr2O3 ,dhy; khRgl;l CrO3 ,d; 0.4000 g khjpup xd;W ntg;gkhf;fg;gLk;
NghJ Cr2O3 ,d; 0.3184g Ij; je;jJ. khjpupapy; cs;s CrO3 ,d; jpzpTr; rjtPjj;ijf; fzpf;f.
(Cr = 52.0, O = 16.0)
(2004/2a)
10) J}a kf;dPrak; Jz;nlhd;W N2,O2 Mfpad mlq;fpa fyitnahd;wpDs; Kw;whfj; jfdQ;
nra;ag;gl;l NghJ ngwg;gl;l MgO, Mg3N2 Mfpad mlq;fpa fyitahdJ 1.8g jpzpitf;
nfhz;b Ue;j J. ,f; fyit kpif eP U ld; ntg;g Nkw; wg;g l; L ngwg;g l; l tpisnghUs;
vupa+l;lg;gl;lNghJ MgO khj;jpuk; cz;lhfpaJ. ,e;j MgO ,d; jpzpT 2.0g MFk;.
rk;ge;jg;gl;l vy;yhj; jhf;fq;fSf;Fk; rkd;gLj;jpa ,urhadr; rkd;ghLfis vOJf.
(MgO, H2O Mfpatw;Wf;fpilNaahd jhf;fj;ijf; ftdj;jpy; vLf;f Ntz;lhk;) kf;dPrpak;
Jz;L jfdQ; nra;jNghJ cz;lhfpa fyitapYs;s MgO : Mg3N2 %y; tpfpjj;ijf; fzpf;f.
(Mg = 24, O =16, N = 14)
(2002/a)
COOK
11) nghw;whrpak; Ijurd; xl;rNyw;W
.x H2 khjpupnahd;W td;ikahf ntg;gNkw;wg;gl;l NghJ
COOH
CO, CO2 1.38g K2CO3, 0.90g H2O Mfpad khj;jpuk; tpisnghUshfg; ngwg;gl;ld.
COOK
i.
COOH
.x H2 ,d; gpupiff;Fupa rkd;gLj;jpa ,urhadr; rkd;ghl;ilf; fPNo vOJf.
ii. x ,d; ngWkhdj;ijf; fzpf;f.
(K = 39.0, H = 1.0, C = 12.0, O = 16.0)
(2003/02a)
12) xU fyg;GNyhfkhdj kfdPrpak;> nrk;G Mfpatw;iwf; nfhz;Ls;sJ. 0.600g jpzpTs;s
,f;fyg;GNyhfj;jpd; khjpup xd;W Kjypy; Ijhd NaOH cld; jhf;f tplg;gl;lJ. ,t;thW
ngwg;gl;l Ijurd; thAtpd; fdtst ep.nt.m ,y; 336cm3 MFk;. mj;jhf;fj;jpd; gpd;G
vQ;rpapUe;j cNyhf kPjpahdJ gpd;du; Ijhd HCl cld; jhf;f tplg;gl;lJ. ,t;thW ngwg;gl;l
Ijurd; thAtpd; fdtsT ep.nt. m ,y; 112cm3 MFk;. ,f;fyg;GNyhfj;jpy; ,Uf;Fk;
kfdPrpaj;jpdJk; mYkpdpaj;jpdJk; jpzpTg;gbahd rjtPjj;ijf; fzpff
; . ep.nt.m ,y; Ijurdpd;
3
-1
%yu;f; fdtsT 22.4 dm mol MFk;. (Mg =24, Al = 27)
(1992/2b)
13) fyg;GNyhfk; xd;wpy; epf;fy;> nts;sp Mfpad khj;jpuk; ,Uf;fpd;wd. ,f;fyg;GNyhfj;jpd;
0.258g MdJ kpifahd fe;jfj;Jld; ntg;gkhf;Ftjd; %yk; Kw;whfj; jfdk; nra;ag;gl;lJ.
mjd; gpd;du; jhf;ff; fyitia kpf typikahf ntg;gkhf;Ftjd; %yk; jhf;fk; Gupahj
kpifahd fe;jfk; Kw;whf mfw;wg;gl;lJ. ,t;thW fpilj;j ry;Ngw;W fyitapd; jpzpT
0.366g Mf ,Ue;jJ. fyg;GNyhfj;jpy; epf;fypd; %y; gpd;dj;ijf; fzpf;f.
(1995/2b)
14) ePuw;w jpz;kr; NrhbakpU fhgNdw;iwAk; ePuw;w jpz;kr; Nrhbaq; fhgNdw;iwAk; nfhz;l
fyit xd;wpy; 0.305g typikahf ntg;gNkw;wg;gl;lJ. ,jd;NghJ ngwg;gl;l kPjpahdJ ePupy;
fiuf;fg;gl;L kpifahd fy;rpak; FNshiul;L Nru;f;fg;gl;lJ. ,t;thwhf cz;lhfpa fy;rpaq;
fhgNdw;W tPo;gbT tbf;fg;gl;L Ntwhf;fg;gl;L cyu;j;jg;gl;L epWf;fg;gl;lJ. ,f;fy;rpaq;
fhgNdw;wpd; jpzpT 0.200g Mf ,Ue;jJ. NkNy Fwpg;gpl;l fyitapy;
NrhbakpU fhgNdw;W : Nrhbak; fhgNdw;W vd;Dk; %y; tpfpjj;ijf; fzpf;f.
(Ca = 40, H = 1, C = 12, O = 16, Na = 23)
(1996/2b)
3.0
-5-
Mr. M. R. Fahumudeen
15) 10g, CaCO3(s) gFjp ntg;gg; gpupifapdhy; 6.7g jpz;k kPjpapidj; je;jJ vdpd; gpupifailahJ
vQ;rpAs;s CaCO3 ,d; jpzpT?
16) MgCO3, SiO2 fyitapy; 2g Kw;whfg; gpupifaile;J 1.12g jpz;kj;jpidj;je;jJ vdpd;> SiO2
,d; w/w% ?
17) Na2CO3, NaHCO3 fyitapd; 5g Kw;whf ntg;gg; gpupifaile;J 3.76g jpz;k kPjpapidj; je;jJ
vdpd; Na2CO3 ,d; w/w%?
18) Mn2O7, MnO2 fyitapd; 0.500g Kw;whf ntg;gg; gpupifaile;J 0.404g jpz;k kPjpapidj;
je;jJ vdpd; Na2CO3 ,d; w/w%?
19) CaCO3, (NH4)2CO3 fyitapd; 5g Kw;whf ntg;gg; gpupifaile;J 1.12g jpz;k kPjpapidj; je;jJ
vdpd; (NH4)2CO3 ,d; w/w%?
20) KNO3 , NH4NO3 fyitapd; 4g Kw;whf ntg;gg; gpupifaile;j NghJ 1.70g jpz;k kPjp ngwg;gl;lJ
vdpd; NH4NO3 ,d; w/w%?
21) gpd;tUtdtw;wpw;F rkd;gLj;jpa ,urhadr; rkd;ghl;il vOJf.
1. NaNO3 ,d; ntg;gg; gpupif
2. Mg(NO3)2 ,d; ntg;gg; gpupif
3. AgNO3 ,d; ntg;gg; gpupif
4. NH4NO3 ,d; ntg;gg; gpupif
22) gpd;tUtdtw;wpy; vJ / vit
vOJf.
i. Al(OH)3
iii. KHC2O4
v. HgO
vii. KClO3
ix. (NH4)2Cr2O7
ntg;gg; gpupifailAk;? gpupiff;fhd <Lnra;ag;gl;l rkd;ghLfis
ii. BaSO4
iv. CrO3
vi. (NH4)2CO3
viii.KMnO4
x. H2O2
23) gpd;tUtdtw;wpd; ntg;gg; gpupiff;fhd <Lnra;ag;gl;l rkd;ghLfis vOJf.
i. HNO3
ii. (NH4)2SO4
iii. NH4NO2
iv. KO2
v. N2O5
vi. PbO2
vii. Al(NO3)3
viii.KNO3
ix. CuCO3
x. Mn2O7
24) a) J}a nrwpe;j iej;jpupf;fkpyk; xU epwkw;w jputkhFk;. mJ xspf;F jpwe;jpUf;Fk;NghJ
kQ;rs; epwkhf khWfpd;wJ. ,t; mtjhdpg;ig rkd;nra;j ,urhadr; rkd;ghl;bd; cjtpAld;
tpsf;Ff.
b) Nru;itfspd; ntg;gg; gpupif %yk; Ma;T$lj;jpy; N2 thA jahupf;fg;glyhk;. ,t;thwhd
jhf;fq;fs; ,uz;Lf;F rkd;nra;j ,urhadr; rkd;ghLfisj; jUf.
(2015 Aug 9 (a) v, 9(b) x)
3.0
-6-
Mr. M. R. Fahumudeen
25.
A njhlf;fk; E tiuapy; ngauplg;gl;l Nrhjidf; Foha;fspy; gpd;tUk; jpz;kq;fs;
mlq;fpAs;sd. (xOq;FKiwapy; ,d;wp) :
Mg(NO3)2 , (NH4)2CO3 , (NH4)2SO4 , NH4NO3 , NaHCO3
,t; xt;nthU jpz;kj;ijAk; ntg;gNkw;Wk; NghJ cUthFk; tpisnghUl;fs; njhlu;ghd
tptuq;fs; fPNo ml;ltizapy; jug;gl;Ls;sd.
jpz;kk;
A
B
C
D
E
tptuk;
1. %yntz;J}s;
2. ePuhtp
3. Rz;zhk;G ePiug; ghy; epwkhf;Fk; epwkw;w> kzkw;w thA
thAepiyapYs;s %d;W tpisnghUs;fs;
1. td;dkpyk;
2. ne];yupd; Nrhjidg; nghUSld; fgpy epw tPo;gbit / epwj;ijg;
ngw;Wj; jUk; epwkw;w thA
1. ePUld; jhf;fk; Gupe;J nkd; %yj;Jf;Fupa fiuriy cUthf;Fk;
ntz;zpw xl;irl;L
2. miw ntg;gepiyapy; epwkw;w <uZ thA
3. nrq;fgpy thA
1. ePuhtp
2. Neu;Nfhl;Lf; fl;likg;ig cila epwkw;w> Ritaw;w eQ;rw;w xU
%tZthA
i. A njhlf;fk; E tiuapyhd jpz;kq;fis ,dq;fhz;f.
ii. A njhlf;fk; E tiuapyhd xt;nthU jpz;kj;ijAk; ntg;gkhf;Fk;NghJ eilngWk;
jhf;fq;fSf;fhd rkd;nra;j ,urhadr; rkd;ghLfis vOJf.
(2015 Aug 2b)
26. fhgNdw;Wfspd; fyitnahd;wpy; mlq;fpAs;s MgCO3 , CaCO3 vd;gtw;Wf;fpilapyhd %yu;
tpfpjk; KiwNa 5 : 1 MFk;. ,f;fyitapd; njupej
; jpzpnthd;iw ntg;gkhf;fpaNghJ cUthfpa
CO2 MdJ epak ntg;gepiyfspYk; mKf;fj;jpYk; 134.4dm3 vd;Dk; fdtsitf; nfhz;bUf;Fk;.
ntg;gkhf;fpa fhgNdw;Wf; fyitapd; jpzpT> (C=12, O=16, Mg=24, Ca=40 > epak ntg;gepiyapYk;
mKf;fj;jpYk; thAnthd;wpd; xU %y; 22.4 dm3 fdtsitf; nfhz;bUf;Fk;)
1. 52g
2. 520g
3. 750g
4. 900g
5. 1040g
(2015 Aug 06)
27. $l;lk; 1> $l;lk; 2 Mfpatw;wpd; cNyhf %yfq;fspd; ,urhadtpay; gw;wpg; gpd;tUk;
$w;Wf;fspy; vJ rupahdJ?
1. $l;lj;jpy; fPo;Nehf;fpr; nry;Yk;NghJ $l;lk; 1 %yfq;fs; ePUld; Fiwe;j Ntfj;Jld;
jhf;fk; Gupfpd;wd.
2. $l;lj;jpy; fPo;Nehf;fpr; nry;Y k;NghJ $l;lk; 2 fhgNdw;Wfs; ntg;gj;jpw;F cWjp
Fiwe;jitahf mikfpd;wd.
3. $l;lj;jpy; fPo;Nehf;fpr; nry;Yk;NghJ $l;lk; 2,d; %yfq;fspd; Ijnuhl;irl;Lfs;>
ry;Ngw;Wfs;> fhgNdw;Wfs; Mfpad ePupNy mjpfk; fiuaf; $baitahf mikAk;.
4. $l;lk; 2 ,y; cs;s vy;yh %yfq;fSk; gq;fPl;LtY Ijiul;Lf;fis cz;lhf;Ffpd;wd.
5. Li2CO3 jtpu $l;lk; 1 ,d; vy;yhf; fhgNdw;WfSk; ntg;gj;jpw;F cWjpahdit.
(2011 Aug 27)
28. gpd;tUk; $w;Wf;fspy; vJ $l;lk; I, II %yfq;fs; (s njhFjp %yfq;fs;) mtw;wpd; Nru;itfs;
vd;gd gw;wpa ,urhadtpay; njhlu;ghfr; rupahdJ>
1. vy;yhf; $l;lk; I, II %yfq;fs; Fspu; ePUld; jhf;fk; Gupe;J H2 IAk; mtw;wpd; cNyhf
Ijnuhl;irl;Lf;fisAk; jUfpd;wd.
2. LiNO3 MdJ ntg;gkhf;fg;gLk;NghJ gpupifaile;J NO2 IAk; O2 IAk; thAf;fshfj;
jUfpd;wd.
3. $l;lk; II ry;Ngw;Wfspd; fiujpwd; $l;lj;jpy; fPNo nry;Yk;NghJ Fiwfpd;wJ.
4. $l;lk; II Ijnuhl;irl;Lf;fspd; %y typik $l;lj;jpy; fPNo nry;Yk;NghJ Fiwfpd;wJ.
5. $l;lk; II %yfq;fspd; fhgNdw;Wfis ntg;gkhf;Ftjd; %yk; mtw;wpd; xl;irl;Lfisg;
ngwyhk;.
(2012 Aug 27)
3.0
-7-
Mr. M. R. Fahumudeen
29. s - njhFg;G %yfq;fs; gw;wpg; gpd;tUk; $w;Wf;fspy; ngha;ahdJ>
1. $l;lk; I %yfq;fs; typikahd xl;rpNaw;Wk; fUtpfshFk;.
2. $l;lk; I %yfq;fs; mtw;wpd; Mtu;jj
; dj;jpy; kpfTk; jho;ej
; Kjyhk; madhf;fr; rf;jpg;
ngWkhdq;fis cilad.
3. $l;lk; II %yfq;fs; xj;j $l;lk; I %yfq;fspYk; ghu;f;fr; rpwpad.
4. nghJthff; $l;lk; I, II %yfq;fs; mad; Nru;itfis cz;lhf;Ffpd;wd.
5. $l;lk; II %yfq;fs; $l;lk; I %yfq;fspYk; ghu;ff
; td;ikahditAk; cau; cUFepiyfisf;
nfhz;ldTk; MFk;.
(2013 Aug 26)
30. ypjpaj;jpdJk; (Li) mjd; Nru;itfspdJk; ,urhadk; gw;wpa gpdt
; Uk; $w;Wf;fspy; jtwhdJ vJ?
1. ypjpak; MdJ xl;rprd; thATld; jhf;fk; Gupe;J Li2O Ij; jUk;.
2. I Mk; $l;l cNyhfq;fSs; cau; cUFepiyiaf; nfhz;lJ ypjpak; MFk;.
3. LiOH ,d; %yj;jd;ik NaOH ,d; %yj;jd;ikia tplf; Fiwe;jjhFk;.
4. I Mk; $l;l fhgNdw;WfSs; kpff; Fiwe;j ntg;gTWjpj; jd;ikiaf; nfhz;lJ Li2CO3 MFk;.
5. LiCl Rthiyr; Nrhjidf;F cl;gLj;jg;gLk;NghJ ePyepwj;ijj; jUk;.
(2016 Aug 09)
31. KClO3 ,id ntg;gg; gpupifailar; nra;tjd; %yk; cUthFk; O2 thA ePupd; fPo;Kfg;
ngau;r;rp %yk; Nrfupf;fg;gLfpd;wJ. 270C ,Yk; 1.13 x 105 Pa mKf;fj;jpYk; epfo;j;jg;gl;l
,t;thwhd xU gupNrhjidapy; Nrfupf;fg;gl;l O2 thAtpd; fdtsT 150.00cm3 MFk;. 270C
,y; ePupd; epuk;gy; MtpaKf;fk; 0.03x105 Pa vdj; jug;gl;bUg;gpd;> Nrfupf;fg;gl;l O2 thAtpd;
jpzpT> (O=16)
1. 0.212g
2. 0.217g
3. 198g
4. 212g
5. 217g
(2015 Aug 15)
32. jput n`g;Nud; (C7H6) khjpupnahd;wpd; 10.0g MdJ O2 thAtpd; 1.30 %y;fSld; fyf;fg;gl;lJ.
n`g;Nuidg; g+uzkhfj; jfdkilar; nra;Ak;NghJ CO,CO2 thAf;fspd; fyitnahd;W
cUthfpd;wJ. jhf;fj;jpd; gpd;du; miw ntg;gepiyapy; fhzg;gLk; thAf; fyitapd; (CO,
CO2, O2) nkhj;j %y;fspd; msT 1.1 Mf ,Ue;jJ. (cUthfpa ePu; jputkhf ,Uf;fpd;wnjdTk;
mjpy; thAf;fspd; fiujpwd; Gwf;fzpf;fj;jf;fJ vdTk; nfhs;f.) cUthfpa CO thAtpd;
%y;fs;> (H=1 , C = 12 , O = 16)
1. 0.40
2. 0.45
3. 0.50
4. 0.52
5. .54
(2015 Aug 13)
33. fhgNdw;Wfspd; fyitnahd;wpy; mlq;fpAs;s MgCO3 , CaCO3 vd;gtw;Wf;fpilapyhd %yu;
tpfpjk; KiwNa 5 : 1 MFk;. ,f;fyitapd; njupej
; jpzpnthd;iw ntg;gkhf;fpaNghJ cUthfpa
CO2 MdJ epak ntg;gepiyfspYk; mKf;fj;jpYk; 134.4dm3 vd;Dk; fdtsitf; nfhz;bUf;Fk;.
ntg;gkhf;fpa fhgNdw;Wf; fyitapd; jpzpT> (C=12, O=16, Mg=24, Ca=40 > epak ntg;gepiyapYk;
mKf;fj;jpYk; thAnthd;wpd; xU %y; 22.4 dm3 fdtsitf; nfhz;bUf;Fk;)
1. 52g
2. 520g
3. 750g
4. 900g
5. 1040g
(2015 Aug 06)
34. mNkhdpak; iej;jpNuw;whdJ cau; ntg;gepiyapYk; iejurd; thA> xl;rprd; thA> ePuhtp
Mfpatw;iw cUthf;fpathW ntbj;Jg; gpupifailAk;. epak ntg;gepiyapYk; mKf;fj;jpYk;
240g mNkhdpak; iej;jpNuw;W gpupifaile;J cUthFk; thAf;fspd; nkhj;j yPw;wu;fspd;
vz;zpf;if>
(H=1, N=14, O=16 epak ntg;gepiyapYk; mKf;fj;jpYk; xU %y; thAtpd; fdtsT 22.4 yPww
; u; MFk;)
1. 33.6
2. 67.2
3. 100.8
4. 134.4
5. 235.2
(2017 Aug 06)
35. (NH4)2CO3(s) , (NH4)2Cr2O7(s) , NH4NO3(s) Mfpatw;iw ntg;gkhf;Fk; NghJ fpilf;Fk; iejuridf;
nfhz;Ls;s Nru;itfs; KiwNa>
1. NH3 , N2 , NO2 2. N2O, N2 , NH3 3. NH3 , N2 , N2O 4. N2 , N2O, NH3 5. N2 , NH3 , N2O
(2018 Aug 26)
36. MgCO3 ,Yk; ghu;f;f BaCO3 ntg;gTWjp $baJ.
3.0
-8-
$l;lk; ,uz;bd; fw;wad;fspd; Kidthf;Fk;
tY $l; l j; j pd; topNa fP o ; Nehf; f pr;
nry;Yk; NghJ FiwfpwJ.
(2018 Aug 41)
Mr. M. R. Fahumudeen