(All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

Njrpa ntspf;fs epiyak; njhz;ilkhdhW

,uz;lhk; jtizg; guPl;ir - 2023
National Field Work Centre, Thondaimanaru.
NFWC 2nd Term Examination - 2023

,urhadtpay; - II A Two Hours 10 min

02 T IIA
Chemistry - II A Gr -12 (2024)

Rl;nlz; :- …………………………….
Kf;fpak; :
 fzpg;ghidg; gad;gLj;j ,lkspf;fg;gl guPl;rfu;fspd; cgNahfj;jpw;F
khl;lJ. khj;jpuk;
 mfpy thA khwpyp 𝑅 = 8.314 𝐽𝐾 −1 𝑚𝑜𝑙 −1
gFjp tpdh ,y. Gs;spfs;
 mtfhjNuh khwpyp 𝑁𝐴 = 6.022 𝑋 1023 𝑚𝑜𝑙 −1
 ,t; tpdhj;jhSf;F tpil vOJk; NghJ 1
mw;ifw; $l;lq;fisr; RUf;fkhd tpjj;jpy; 2
fhl;lyhk;. A
H H 3
cjhuzk; : | |
4
H – C – C – $l;lj;ij CH3 CH2
| | vdf; fhl;lyhk;. 5
H H
B 6
 gFjp - A mikg;Gf; fl;Liu (gf;fq;fs; 2–8) 7
 vy;yh tpdhf;fSf;Fk; ,t; tpdhj;jhspypNa
tpil vOJf. ,yf;fj;jpy;
 Xt;nthU tpdhTf;Ff; fPOk; tplg;gl;Ls;s nkhj;jk;
,lj;jpy; ckJ tpilfis vOJf. nfhLf; vOj;jpy;
fg;gl;Ls;s ,lk; tpilfis vOJtjw;Fg;
NghJkhdJ vd;gijAk; tpupthd tpilfs;
FwpaPl;nlz;fs;
vjpu;ghu;f;fg;gltpy;iy vd;gijAk; ftdpf;f.
tpilj;jhs; guPl;rfu; 1
 gFjp - B fl;Liu (gf;fq;fs; 1-2)
tpilj;jhs; guPl;rfu; 2
 %d;W tpdhf;fspypUe;J ,uz;L
tpdhf;fSf;F tpil vOJf. ckf;F Gs;spfisg; guprPypj;jtu;
toq;fg;gLk; vOJk; jhs;fis ,jw;Fg;
Nkw;ghu;it nra;jtu;
gad;gLj;Jf.
 ,t; tpdhj;jhSf;nfd toq;fg;gl;l Neu
KbtpNy gFjp A NkNy ,Uf;Fk;gbahf A,
B Mfpa ,uz;L gFjpfspd; tpilj;
jhs;fisAk; xd;whfr; Nru;j;Jf; fl;ba
gpd;du; guPl;ir Nkw;ghu;itahsuplk;
ifaspf;f.
 tpdhj;jhs;fspd; B gFjpia khj;jpuk; guPl;ir
kz;lgj;jpypUe;J ntspNa vLj;Jr; nry;y
mDkjpf;fg;gLk;.

Grade - 12 (2024) 2nd term 2023 NFW.C 1 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

mikg;Gf; fl;Liu
 vy;yh tpdhf;fSf;Fk; tpil jUf.
01) (a) gpd;tUk; xt;nthU $w;Wk; cz;ikah> ngha;ah vdf; Fwpg;gpLf.
(i) ,yj;jpuDf;F Jzpf;if ,ay;Gk; miy ,ay;Gk; cz;L. .......................................
3
(ii) Nrhb Nruh ,yj;jpud;fs; vz;zpf;if vd;wthW
mjpfupf;Fk; .......................................
(iii) 3 xl;rpNaw;Wk; fUtpahfTk;> jho;j;Jk; fUtpahfTk;
njhopw;glf; $baJ. vdNt mJ ,Utop tpfhuk; milAk;. .......................................

(iv) gq;fl
P ;L tYNru;itfs; rpy ePupy; fiue;jgpd; kpd;id flj;Jk; .......................................

(v) Ijurd; fhyy; epwkhiyapy; ntsp Xl;by; cs;s ,yj;jpud;fs;

= 2 ,w;F gha;tjdhy; ghrd; njhlu; ngwg;gLfpd;wJ. .......................................

(vi) mZ xd;wpy; cs;s ntt;NtW ,yj;jpud;fs; xNu 4 rf;jp

nrhl;nlz;fis nfhz;bUf;f KbAk;. .......................................

(b) (i) 2 5 %yf;$Wf;F kpfTk; Vw;Wf;nfhs;s $ba Y}aprpd; Gs;sp Nfhl;L

fl;likg;igj; jUf.

| |
C C N C
| |

(ii) NkNy (i) ,y; tiue;j fl;likg;gpy; mZf;fspdJk;> ,dJk; xl;rpNaw;w

vz;fisj; Jzpf.

| |
C C N C C1 C2 N3 C4
| 1 |2 3 4
1
(iii) 3 rhj;jpakhd Y}aprpd; Gs;sp Nfhl;L fl;likg;Gfs; (gupT fl;likg;Gfs;)
midj;ijAk; tiuf. mjpy; cWjp> cWjp mw;w fl;likg;Gfisf; Fwpg;gpLf.
O
|
H O N O

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(iv) 3 ,y; cs;s vy;yh gpizg;G ePsq;fSk; rkd; MFkh ,y;iyah

vdf; Fwpg;gpLf.

Grade - 12 (2024) 2nd term 2023 NFW.C 2 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

(v) gpd;tUk; Y}aprpd; fl;likg;ig mbg;gilahff; nfhz;L jug;gl;l

ml;ltizia G+u;j;jp nra;f.
H
| H |
H C O N=𝐶=𝐶 C O N C C
| |1 2 3 4 5
H
H

1 2 3 4 5

Nrhbfs;

,yj;jpud; Nrhb Nfj;jpu fzpj tbtk;

mZit Rw;wpAs;s tbtk;

mZtpd; fyg;G

mz;zsthd gpizg;G Nfhzk;

(vi) NkYs;s %yf;$wpy; gpizg;ig cUthf;Fk; mZ fyg;gpd Xgpw;wy;fis

Fwpg;gpLf.
1 ........................ 1 ........................

1 2 1 ........................ 2 ........................

2 3 2 ........................ 3 ........................

3 4 3 ........................ 4 ........................

4 5 4 ........................ 5 ........................

(vii) gpizg;ig cUthf;Ftjpy; gq;nfLf;Fk; xgpw;wy;fis Fwpg;gpLf.

3 ........................ 4 ........................

4 ........................ 5 ........................

(viii) fPo;tUtdtw;iw milg;Gf;Fwpf;Fs; cs;s ,ay;G mbg;gilapy;

VWtupirg;gLj;Jf.
− −
(1) 3 3 2 3 (gpizg;G Nfhzk;) ..............................................

(2) 2 3 2 2 ( ,d; kpd; vjpu;j;jd;ik ..............................................

(3) (mad; jd;ik) ..............................................

[ 2 2
(4) 2 2 6] [ 3 4] (epwnrwpT) ..............................................

(5) ,yj;jpud; Vw;wrf;jp (ntsptplg;gLk; rf;jp) ............................................

Grade - 12 (2024) 2nd term 2023 NFW.C 3 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

02) (a) Kjyhk; Mtu;j;jd %yfk; Ak; 2 Mk; Mtu;j;jd %yfk; Ak; Nru;e;J
cUthf;fpa Nru;it ,d; %yf;$W mDgt #j;jpuk; MFk;. ,J miw
ntg;gepiyapy; gpupifaile;J apdhy; Md NtnwhU %yf;$W I
cUthf;Ffpd;wJ. MdJ fhu Clfj;jpy; 2 3 cld; jhf;fkile;J kQ;rs; epw
fiury; I cUthf;Ffpd;wJ.
(i) Mfpadtw;iw ,dq;fhz;f.

- .................................... - ......................................... - .........................................

−
(ii) 2 3 GupAk; jhf;fj;ij jUf.

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(iii) MdJ xl;rpNaw;Wk; fUtpahfTk;> jho;j;Jk; fUtpahfTk; njhopw;glf; $baJ
vdpd; mtw;wpw;fhd nghUj;jkhd miu mad; rkd;ghLfis jUf.
(a) xl;rpNaw;Wk; fUtp .....................................................................................................................

(b) jho;j;Jk; fUtp .....................................................................................................................

(b) tspapy; cs;s ,U gpujhd thAf;fSld; jhf;fKw;W Mfpatw;iw

cUthf;Ffpd;wJ. ,tw;Ws; MdJ ePUld; jhf;fp IAk;> thA IAk;
jUfpd;wJ. thA MdJ %f;if mupf;Fk; kzKilaJ. MdJ NtnwhU
mkpythA cld; jhf;fkile;J mlu;e;j ntz;J}kj;ij nfhLf;fpd;wJ.
(i) ,U gpujhd thAf;fSld; GupAk; jhf;fq;fisj; jUf.

.............................................................................................................................................................................

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(ii) Mfpadtw;iw ,dq;fhz;f.

.................. .................. .................. .................. ..................

(iii) ePUld; GupAk; jhf;fj;ij jUf.

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(iv) Ak; Ak; GupAk; jhf;fj;ij jUf.

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(v) thA ,w;fhd cWjpg;ghl;L Nrhjidia jUf.

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(vi) thA I Ma;T $lj;jpy; jahupg;gjw;fhd ,yFthd Kiw xd;iw njuptpj;J

nghUj;jkhd rkd; nra;j rkd;ghL %yk; mjid tpsf;Ff.
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Grade - 12 (2024) 2nd term 2023 NFW.C 4 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

(vii) thA 2 cld; jdpj;jdpNa GupAk; jhf;fq;fs;

(1) ..............................................................................................................................................

(2) 2 ..............................................................................................................................................

03) (a) khztu; FO xd;wpdhy; Rz;zhk;G fy; khjpupapy; fhzg;gLk; 3 ,d; jpzpT
rtPjj;ij mwptjw;Fk; kw;nwhU FO 1 3 cldhd jhf;fj;jpd;
eLepiyahf;f ntg;gTs;Siw khw;wj;ij mwptjw;fhf gpd;tUk; gupNrhjid
Nkw;nfhs;sg;gl;lJ.
3
4 Rz;zhk;Gfy; khjpup vLj;J miuf;fg;gl;L 2 50 kpif ,y;
Kw;whf fiuf;fg;gl;lJ. ,jd; NghJ ,d; ntg;gepiy 25 ,y; ,Ue;J
30 f;F cau;e;jJ. gpd; fiury; Fsputplg;gl;L kPz;Lk; 25 f;F ntg;gepiy
Fiwe;j gpd; vQ;rpa 1 nrwpTila My; epakpf;fg;gl;l NghJ mjd;
3
32 Njitg;gl;lJ.
(i) 3 ,ilapyhd jhf;fj;ij jUf.

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(ii) ,ilapyhd jhf;fk; ahJ?

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(iii) ,d; Muk;g %y; msT ahJ?

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(iv) cld; jhf;fkile;j ,d; %y; msT ahJ?

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(v) 3 cld; jhf;fkile;j %y; ahJ?

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(vi) 3 ,d; %y; msT ahJ?

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(vii) 3 jpzpT rjtPjk; ahJ?

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[ 40 12 16]

Grade - 12 (2024) 2nd term 2023 NFW.C 5 ,urhadtpay; - II A

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−3
(b) 3 jhf;fkile;j gpd; fiurypd; mlu;j;jp 1 jd;ntg;gf; nfhs;ssT
−1 −1
4.5 . ,q;F jhf;fk; epfo;j;j gad;gLj;jg;gl;l FLitapd; ntg;gnfhs;ssT
Gwf;fzpf;fj;jf;fJ. mj;Jld; #oypw;fhd ntg;g ,og;Gk; Gwf;fzpf;fjf;fJ.
(i) 3 ,ilapyhd jhf;fj;jpd; NghJ ntsptplg;gl;l ntg;grf;jp msit
fhz;f.
3 fiuf;Fk; NghJ fdtsT khw;wk; Gwf;fzpf;f jf;fJ

................................................................................................................................................................................

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(ii) 1 3 ,d; cldhd eLepiyahf;f ntg;gTs;Siw khw;wk; ahJ?

−1
,y;
................................................................................................................................................................................

................................................................................................................................................................................

(iii) 3 ePupy; fiujy; xU RahjPd nrad;Kiwad;W. vdpDk; NtnwhU

gupNrhjid %yk; 3 ,d; ePupy; fiuryhjy; ntg;gTs;Siw khw;wk;
−1
= 16. vd fzpf;fg;gl;bUe;jJ vdpd;
3 vd;w jhf;fj;jpd; 1 3 ,d; eLepiyahf;f
ntg;gTs;Siw khw;wk; ahJ?
................................................................................................................................................................................

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(iv) 3 cld; jhf;fkile;jgpd; vQ;rpa My; epakpf;fg;gl;l
NghJ fiurypd;ntg;gepiy 25 ,y; ,Ue;J 32 f;F mjpfupj;jJ vdpd;
Muk;g epiyapy; ,Ue;J fiurypy; ntg;gepiyapy; Vw;gl;l khw;wj;ij
Neuj;Jld; gUkl;lhf tiug gLj;Jf. [ 3 ck; ] ,uz;L
jhf;fKk;.

Grade - 12 (2024) 2nd term 2023 NFW.C 6 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

04) (a) (i) mNrjd Nru;it ,y; jpzpTg;gb 35 5 60 khj;jpuk;

fhzg;gLfpd;wJ vdpd; mjd; mDgt #j;jpuj;ij Jzpf.
[ 14 0 16 1]

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(ii) ,r;Nru;itapd; %yf;$w;W jpzpT 80 vdpd; mjd; %yf;$w;W #j;jpuj;ij

fzpf;Ff.
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(iii) ,r;Nru;it my;YNyhfq;fshy; Md mad; Nru;itahFk;. ,jpy; fhzg;gLk;

fw;wad;> md;daid ,dq;fhz;f.
fw;wad; : ......................................................

md;dad; : .....................................................

(iv) ntg;ggpupifapd; NghJ ,d; xl;irl;L xd;iw tpisTfspy; xd;whf

nfhLf;Fk; vdpd; mjd; ntg;ggpupif jhf;fj;ij jUf.
................................................................................................................................................................................

(v) ,d; gpupifapdhy; ngwg;gl;l ,d; xl;irl;bd; ngaiu jUf.

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(vi) ,r;Nru;it ,y; cs;s md;daid ,dq;fhz;gjw;F Nrhjid xd;W jUf.

................................................................................................................................................................................
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(b) (i) xU ,yl;rpathAk;> nka;thATk; mKf;fj;Jld; mKf;fgLjd;ikapd;
khwiy fPNo gUkl;lhf tiuf. (khwh ntg;gepiyapy;)
mKf;fgL
jd;ik

mKf;fk;

Grade - 12 (2024) 2nd term 2023 NFW.C 7 ,urhadtpay; - II A

 (All Rights Reserved/ KOg;gjpg;Ghpik cilaJ)

(ii) ,t;tpUtif thAf;fspdJk; tiugpy; Vw;gl;l khw;wj;jpw;fhd ,U

fhuzq;fisf; Fwpg;gpLf.
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(iii) xNU ntg;g mKf;fj;jpy; cs;s xU %y; ,yl;rpa> nka;thAf;fspd;

,ilapyhd njhlu;ig jUf. – nka;thA) ( - ,yl;rpathA)
................................................................................................................................................................................

(iv) nka;thAit ,yl;rpathA elj;ijia mz;kpf;f nra;a mKf;fk;>

ntg;gepiyia vt;thW khw;w Ntz;Lk;?

mKf;fk; ........................................................ ntg;gepiy ....................................................................

(v) ,yl;rpathA rkd;ghl;by; ,Ue;J khwhntg;gepiyspy; thA xd;wpd; mKf;fk;

nrwptpw;F Neu;tpfpjrkd; vd fhz;gpf;Ff.
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Grade - 12 (2024) 2nd term 2023 NFW.C 8 ,urhadtpay; - II A