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Half Yearly Exam 2014 – Key Answer
10th Standard - Science
gpupT - I
1. Mg;gphpf;fh
2. gpsh];Nkhbak; ghy;rpghuk;
3. kfue;jr;Nru;f;if
4. vj;jdhy;
5. capup gpsh];bf;
6. rpjwyhy;
7. yhf;bf;mkpyk;
8. Eiukpjg;G Kiw
9. 14-tJ njhFjpapy;
10. fhu;gd;
11. rop
12. 4V
13. fUik
14. Ftp
15. Ftpnyd;];
gpupT - II
16. N`hNkh n`gpyp];> N`hNkh vuf;l];> epahd;lh;jhy; kdpjd;> N`hNkh nrgpad;
17. ,f;$w;W jtW. Vnddpy; nfhLf;fg;gl;Ls;s Neha; mwpFwp Fth\pNahh;fUf;F kl;LNk
nghUe;Jk;. kuhRk]; Nehapd; mwpFwpfs; :
1. Foe;ijapd; vil FiwT>
2. fLikahd tapw;Wg; Nghf;F>
3. vYk;G kPJ Njhy; Nghh;jj
; g;gl;lJ Nghd;w clyikT.
18. tpe;jfq;fs; , tpe;Jf;fisAk; Mz;l;Nuh[d; `hu;NkhidAk; cw;gj;jp nra;fpd;wd.
19. nyg;NlhBd; irf;Nfhl;bd; ghf;fpBd; bg;Nshl;Bd; laifndrp];.
20.
21.
gpsj;jy;
mUk;Gjy;
Jz;lhjy;
22. ,uj;j rptg;Gz
-
GNuhl;NlhNrhthd;fs;
gpiuNah/gpy;yk;
];igNuhifuh
vupj;NuhirlLfs;
,uj;j nts;isaZfs;
-
Ygf;Nfhirl;Lfs;
,uj;j jl;il nry;fs;
-
j;Nuhk;irl;Lfs;
ghf;Bupaq;fs;
<];l;
jl;ilGOf;fs;
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23.
24.
25.
26.
27.
eha;> G+id> Kjiy> rpq;fk;> Gyp
,wf;if (Kd; iffs;)
A iryk; B-GNshak;
iryj;jpd; topahf ePu; kw;Wk; fdpk nghUs;fs; flj;jg;gLfpd;wd.
tpil: ky;ngup fk;gsp G+r;rp  FUtp  gUe;J
28. kuGrhu; tsq;fs; jpUk;g ngw ,ayhj tsq;fs; MFk;
,aw;if thAtpy; fhzg;gLk; Kjd;ikahd nghUs; kPjN
; jd;
29.
tsq;fs;
A
B
C
jpUk;gg; ngWk; tsq;fs;
#upa xsp Mw;wy;
fhw;W
i`l;u[d;
jpUk;gg; ngw ,ayhj
Fup
,aw;if thA
tsq;fs;
29. 1.gNah Bry;> 2. gNah My;f`hy;> 3. gNah <ju;> 4. capup thA
30.
cz;ikf; fiury;
$o;kf; fiury;
1. xspiar; rpjwr; nra;ahJ
2. xU gbj;jhdJ
Xspiar; rpjwr; nra;Ak;
gygbj;jhdJ
3. vspjpy; guTk;
nkJthfg; guTk;
31. fiury; nrwptpd; epiw
=
ngl;Nuhypak
fiunghUspd; epiw x100
rjtPjk;
fiunghUspd; epiw + fiug;ghdpd; epiw
20x100
=
2000
20+50
70
= 28.57%
32. mZf;fl;L vz; = %yf;$W epiw
mZepiw
= 28 = 2
14
XNrhdpd; mZf;fl;L vz; = 2
33. m) mkpyj;jd;ik cilait - tpdpfh;
M) fhuj;jd;ik cilait - ,uj;jk;> rikay; Nrhlh> tPl;Lg; gad;ghl;L mk;Nkhdpah
34. ePy epw jhkpu ry;Ngl; fiury; gr;ir epwkhf khWfpwJ. ,Uk;G jhkpuj;ij tpl tpidj;jpwd;
kpf;fJ.
Fe + CuSO4
FeSO4 + Cu
,Uk;G jhkpury;Ngl; fiurypy; ,Ue;J jhkpuj;ij ,lg;ngah;r;rp nra;fpwJ. .
35. mYkpdpaj;jpd; gad;fs;
1. tPl;Lghj;jpuq;fs;nra;jpl 2. kpd;fk;gp cw;gj;jp 3. tpkhdk; fl;Lkhdk; 4. ntg;gj;jhy; xl;b ,idf;f
36. rupahf cs;sJ
37. ituj ;jpy; cs;s xt;nthU fhh;gd; mZTk;> ehd;F fhh;gd; mZf;fSld;
gpizg;Gw;Wf; fbd Kg;ghpkhz mikg;ig cUthf;Ftjhy; ituk; fbdj;
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jd;ikAld; cs;sJ.
38. m) xU epA+l;ld; vd;gJ tpir xU fpNyh fpuhk; epiwAs;s nghUspy; 1ms-2 KLf;fj;ij
Vw;gLj;Jk; tpirapd; msitf; Fwpf;Fk;.
M) tpidAk; vjpu; tpidAk; vg;NghJk; ,U NtWgl;l nghUspy; kPJ nray;gLk;.
39. Neu; , vjpu;
40. kpd;Ndhl;lk;/ kpd;dOj;j NtWghL = khwpyp
kpd;Ndhl;lk; = kpd;jil X kpd;dOj;j NtWghL
41. m. mk;kl
P ;lu; M. kuGrhuh Mw;wy;
42. 37 % fhuPak; 63 % <ak; nfhz;l cNyhff; fyitahy; MdJ. Fiwe;j cUFepiy nfhz;lJ.
43.m.
M. ilahg;lu;
44. m) fhe;jg;Gyk; vz; kjpg;Gk; jpirAk;; nfhz;l msT
M) fhe;j tpirf;NfhLfs; tlKidapy; njhlq;fp njd;Kidapy; KbAk;
45. rptg;G ,mjpfk;
gpupT - III
gFjp - m
46. 3-4 kpy;ypad; Mz;LfSf;F Kd;dh; - N`hkpdpl;Lfs;
1.5 kpy;ypad; Mz;LfSf;F Kd;dh; - N`hNkh vuf;l];
1 kpy;ypad; Mz;LfSf;F Kd;dh; - epahz;lh;jhy; kdpjh;fs;
75000 -10000 Mz;LfSf;F Kd;dh; - N`hNkhnrgpad;fs;
M) Rkhh; 18000 Mz;LfSf;F Kd;dh;
,)
1. 3-4 kpy;ypad; Mz;LfSf;F Kd;dh; N`hkpdpl;Lfs; (kdpj Kd;Ndhbfs;) fpof;F
Mg;gphpf;fhtpw;F te;jdh;.
2. goq;fis cz;L tho;e;jdh;;
3. fw;fshy; Md MAjq;fisg; gad;gLj;jpdh;.
4. cauk; 4 mbf;F kpfhky; epkph;e;j eil nfhz;lth;fshf ,Ue;jdh;.
5. ,th;fs; N`hNkhn`gpyp]; vd miof;fg;gl;ldh;.
47. m) Neha;jj
; Lg;G+rp ml;ltiz:
t.vz;
taJ
jLg;G+rp
msT
1.
gpwe;j Foe;ij
Kjy; jtiz
BCG
2.
15 ehl;fs;
NghypNah nrhl;L kUe;J
Kjy; jtiz
3.
6 tJ thuk;
Kjy; jtiz
DPT (Kj;jLg;G+rp)
4.
10 tJ thuk;
,uz;lhk; jtiz
DPT & NghypNah
5.
14 tJ thuk;
%d;whk; jtiz
DPT & NghypNah
M) fl;Lg;gLj;jg;gLk; Neha;fs;:
1.fhrNeha;> 2. NghypNah> 3. ff;Fthd; ,Uky;> 4. nll;ld];> 5. njhz;ilmilg;ghd;
48. fUTWjy; eilngwhkNyNa cUthFk; fdpfSf;F ghu;jj
; pNdhfhu;gpf; fdpfs; (my;yJ) fUTwhf; fdpfs;
vd;Wngau;. v.fh tpijapy;yh jpuhl;ir, nfha;ah.
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fdp
jdpf;fdp
Rijg;gw;Ws;s fdp
KOr;rijf;fsp
1.ngh;hp
2.n`];nghpbak;
3.Nghk;
4.ngg;Ngh
cs; xl;Lr;
rijf;fdp
(l;&g;)
jpus;fsp
cyh;fdp
cyh; ntbfdp
1.,UGwntbfdp(ny$k;)
2.xU Gwntbfdp
3.fhg;#y;
(ii)miw ntbfdp
$l;Lf;fdp
Nrh;Nuhrp];
cyh;
ntbahf;fdp
1.mfPd;
2.Nfhpahg;rp];
3.rpg;nry;yh
4.nfhl;il
irNfhd];
gpsTf;fdp
1.nyhnkz;lk;
2.fphpNkhfhh;g;
3.nuf;kh
(ii) jLg;Gr; Rth; miw
ntbfdp
49. 1. tPLfspd; Nkw;$iu kw;Wk; ikjhdq;fspy; tpOk; kio ePiu epyj;jbapy; Nrkpj;jy;
2. mizfs; kw;Wk; ePhj
; N
; jq;fspy; mjpfkhd ePiur; Nrkpj;J Foha;fs; kw;Wk; fhy;thafs;
%yk; Njitg;gLk; ,lq;fSf;F ePiuf; nfhz;L nry;Yjy;.
3. jiyfPo; rt;T+L guty; Kiwapy; fly; ePiuf; FbePuhf khw;Wjy;.
4. ,ae;jpuq;fisf; Fsph;tpf;fg; gad;gLk; ePiu kWRow;rp %yk; kPz;Lk; gad;gLj;Jjy;.
5. ePh; Nfhh;jj
; Nkfq;fspy; cyh; gdp my;yJ nghl;lhrpak; mNahilL Jfs;fisj; J}tp
nraw;if kiog; nghopit Vw;gLj;Jjy;.
50.
m) mZ Ntjptpidapy; <LgLk; kpfr;rpwpa Jfs;
M) mZ gpsf;ff; $baJ.
,) xNu jdpkj;jpd; mZf;fs; rpy gz;Gfspy; NtWgl;Lf; fhzg;glyhk;
v.fh. INrhNlhg;Gfs;.
<) ntt;NtW jdpkj;jpd; mZf;fs; rpy gz;Gfspy; xj;jpUf;Fk;. v.fh INrhghh;
c) xU jdpkj;jpd; mZit kw;nwhU jdpkj;jpd; mZthf khw;w KbAk;
(khw;W jdpkkhf;fy; Kiw)
C) xU jdpkj;jpd; epiwia Mw;wyhf khw;w KbAk;. (Id;];Bdpd; E = mc2 rkd;ghl;bd;gb)
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51.
%yf;$W tha;g;ghL
nghJg;ngah;
IUPAC ngah;
CH3 CH2 CHO
GNuhg;gdhy;bi`L
GNuhg;gNdy;
CH3 COCH3
mrpl;Nlhd;
fPl;Nlhd;)
GNuhg;gNdhd;
CH3 CHCH3
|
OH
INrhGNuhg;igy;My;f`hy;
2-GNuhg;gdhy;
CH3 COOH
mrpl;bf; mkpyk;
vj;jdhapf; mkpyk;
HCHO
ghh;khy;bi`L
nkj;jNdy;
(ilnkj;jpy;
52.t pil: epA+l;ldpd; Kjy; ,af;f tpjpg; gb rkkw;w Gw tpir xd;W nray;gl;L khw;Wk; tiu ve;j xU
nghUSk; jdJ Xa;T epiyiaNah my;yJ rPuhd ,af;fj;jpy; mike;j ,af;f epiyiaNah
khw;wpf;nfhs;shky; njhlh;e;J mNj epiyapy; ,Uf;Fk;;.
v.fh : Nkirapd; kPJ itf;fg;gl;Ls;s Gj;jfk; xd;W mjd; kPJ xU tpir nray;glhjtiu
njhlh;;e;J Xa;T epiyapNyNa ,Uf;Fk;.
M)
tpil: m1=10kg, m2=20kg. u1=10ms-1, u2= 5ms-1. v1=12ms-1, v2= 4ms-1
&
t = 2s.
F1= m2(v2-u2) = 20(4-5) = 20(-1) = -20 = -10N
t
2
2
2
F2= m1(v1-u1) = 10(12-10) = 10(2) = 20 = 10N
t
2
2
2
F1 = -10N & F2 = 10N.
53. m) gLfjph;> M) tpyF fjph;> ,) kPs;fjph;> <) tpyFNfhzk;> c) jpirkhw;wf;Nfhzk; >C) tpLNfhzk;.
tpil: m) gLfjph; = PE
M) tpyFfjph; = EF
c) jpirkhw;wf;Nfhzk; = < d
,) kPs;fjph; =FS <) tpyFNfhzk; = < r
C) tpLNfhzk; = < e
tpil: xsptpyfy; vz;(µ) vd;gJ Clfq;fspy; xspapd; jpirNtfj;NjhL njhlh;GilaJ.
fhw;wpy; xspapd; jpirNtfk;(c)
___________________________________
Clfj;jpy; xspapd; jpirNtfk;(v)
fhw;wpy; xspapd; jpirNtfk;(c)
Clfj;jpy; xspapd; jpirNtfk;(v) =
___________________________________
xsptpyfy; vz;(µ)
v = 3x108 / 2.42 = 1.23 x 108 ms-1.
xsptpyfy; vz;(µ)=
Prepared by,
MR. Santhana Krishnan B.T.Asst., SSK.

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