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jhU m<d;a wOHdmk fomd¾;fïka;=j

f;jk jdr mÍlaIKh - 2024
13 fY%aKsh ;dlaIKfõoh i`oyd úoHdj
ms<s;=re m;%h
I fldgi
1 - ( 4) 2 - (3) 3 - (2) 4 - (4 ) 5 - (3) 6 - ( 4) 7 - ( 2) 8 - (1 ) 9 - ( 1 ) 10 - ( 3 )
11 - (4) 12 - (2) 13 - (5) 14 - (1 ) 15 - (4) 16 - ( 3 ) 17 - ( 2 ) 18 - ( 2 ) 19 - ( 1 ) 20 - ( 2 )
21 - (5) 22 - (2) 23 - (3) 24 - (1 ) 25 - (1) 26 - ( 2 ) 27 - ( 2 ) 28 - ( 3 ) 29 - ( 4 ) 30 - ( 3 )
31 - ( 5) 32 - (2) 33 - (1) 34 - (2 ) 35 - (5) 36 - ( 3 ) 37 - ( 4 ) 38 - ( 4 ) 39 - ( 1 ) 40 - ( 4 )
41 - (2) 42 - (3) 43 - (3) 44 - (2 ) 45 - (2) 46 - ( 4 ) 47 - ( 1 ) 48 - ( 3 ) 49 - ( 3 ) 50 - ( 4 )
^tl m%Yakhlg ,l=Kq 02 ne.ska uq¿ ,l=Kq 100 hs'&
A fldgi
^01& ^A& ^i& m%d.a kHIaál - nelaàßhd" ihsfkdanelaàßhd
iqkHIaál - È,Sr" we,a.S" fm%dgfidajd ^2 x 2 } 04&
(ii)
m%d.a kHIaál iQkHIaál
mg, j,ska jg ù we;s mg, j,ska jgù we;s ixúOdkh jQ
ixúOdkh jQ kHIaáhla ke;' kHIaáhla we;'

mg,uh bkaøsld ke;' mg,ug bkaøsld we;' ^yß; ,j"

uhsfldkaä%hu" f.da,aysfoay" wka;#ma,diaóh
cd,sld&
ysiafgdaka fm%daàka fkdue;s ysiafgdaka u; fj¿Kq DNA j,ska
w;r jD;a;dldr DNA wkq iukaú; j¾K foay mj;s'
kHIaál øjH f,i mj;S'
70S rhsnfidau we;' 80S rhsnfidau we;'
^3 x 5 } 15&
(iii) ffjria
(iv) m%ckkh isÿ l< yels ùu" mßkduh ùu'
(B) (i)
úNdcl mgl iaÒr mgl

lD;Hhla bgq lsÍu i|yd lD;Hhla bgq lsÍu i|yd

úfNaokh ù ke;' úfNaokh ù we;'

úNdcl yelshdj we;' úNdcl yelshdj ke;'

^2 x 5 } 10&
(ii) (a) ia:Q, fldaKdia;r mgl
(b) oDvia;r mgl
(c) uDÿia;r mgl ^2 x 3 } 06&

^01&
 (iii) iÔú ffi, j,ska hqla;hs" ffi, f.da,dldrh" ffi, w;r wka;¾ ffi,Sh wjldY we;'
ffi,shqf,daia j,ska hqla; ;=kS ffi, ì;a;s we;' ^2 x 5 } 10&
(iv) oDvia;r mgl $ b ^,' 05&
(v) oeä ikaOdrk lD;H ^,' 05&
(vi) ffi, ì;a;sj, fldka fi,shqf,daia j,ska >klï ù we;' ^,' 05&
C (i) weuhsf,aia $ fuda,afÜia ^,' 05&
(ii) msIaGh .a¨fldaia njg m;a lsÍu' ^,' 05&
(iii) fuda,aÜj, we;s tkaihsuh ksid iEfok iSks iys; ødjkh ^,' 05&
(iv) Humulus lupulus ^,' 05&
Saccharomyces cervisiae ^,' 05&
ffjl,ams; ks¾jdhq ^,' 04&
02' (A) (i) vhsielrhsv $ fuda,afgdaia ^,' 05&
(ii) .a,hsfldisäl nkaOk ^,' 05&
(iii) weuhsfkda wï, ^,' 05&
(iv) fmmaghsv nkaOkh ^,' 05&
(v) fm%daàk ^,' 05&
(vi) A - wdydr rildrl f,i
B - fm%daàk - ,ore wdydr fmr Ô¾Kh
(vii) fnkäla m%;sldrlh ^,' 05&
(viii)ks,a ® .fvd,a r;= wjlafIam ^,' 05&
(B) (i) NdKav fyda fiajd ksIamdokhl ld¾hlaIu;djh j¾Okhg;a" tu.ska ñksidg iy
mßirhg jk n,mEu wju lsÍug ika;;sl taldnoaO mdßißl l%shdud¾. fhdod .ekSu'
^,' 10&
(ii) wuqøjH Ndú;h wvq lsÍu $ m%;spl%SlrKh $ wmøjH wju lsÍu' ^,' 12&
(iii) .=Kd;aul wuqøjH f;dard .ekSu' $ kùk hka;% iQ;% Ndú;h $ kQ;k l%u fhdod .ekSu'
^,' 12&
(iv) R - Reduse R - Reuse R- Recycle ^,' 12&
(v) wju lsÍu' ^,' 04&
03' (A) (i) ;dm odhlhs'
(ii) mDIaÀl j¾.M,h jeä jk neúka m%;sl%shdfõ iS>%;djh jeä fõ'
(iii) 40 + 12 + 16 x 3 = 100gmol-1
(iv) CaCO ujq, .Kk } CaCO ialkaOh
3 3

CaCO3 ujq,sl ialkaOh

1000 x 1000 g
=
100g mol-1
-1
= 10 000 mol

(v) Cao ujq, .Kk } 10 000 mol

Cao ialkaOh } Cao ujq,sl ialkaOh x ujq, .Kk
-1
= 10000 mol x 56 gmol
= 560 kg

^02&
 ;dm úm¾hdih
(vi) Q = mcq (vii) m;sl%shd ;dmh}
ujq, .Kk
= 1000 kg x 900 x 870
Q = 783000 kJ -1 4Q
176 kJ mol =
10,000
DQ = 1760000kJ

g pm w = 2pf
(B) (i) f=
60 w=2x3x5
-1
300 w = 30 gads
f=
60
f= 5Hz

1
(iii) q = w0 t + 2 a t2
(ii) a = w - w
1
t q = 0 + 2 x 0.5 x 60
2

a= 30 -0 1
60 q = 2 x 0.5 x 3600
-2
a = 0.5gads
q = 900 gad

1 2
(iv) I = 2 mg
1 2
I= x 200 x (0.5)
2
2
I = 25 kgm

q
1 2 n=
(v) E = 2 I w 2p
1
E = 2 x 25 x 302 n = 900
2x3
1
E = 2 x 25 x 900 n = 150 ^jgd&

E = 11250 J

04. (A) (i) 36 x 105 J 6

40 x 10 x 10
(ii) Kwh .Kk } kwh
1000
3
= 40 x 10 x 18
3
= 720 x 10
= 72 x 104 kwh

^03&
 (iii) n,d.drh ksmojk kwh m%udKh = 75 x 104
wu;r kwh m%udKh } 90 x 104 kwh - 72 x 104 kwh
= 18 kwh

(iv) wu;r kwh m%udKfha we;s J m%udKh

= 18 x 36 x 105 J
5
= 648 x 10 J

wju laIu;djh } Yla;sh m%udKh

ld,h

= 648 x 105 J
18 x 3600

= 1000kw
(B) (i) m - Pv (iii) 40x 106 w = 1000 x 800 x 10 x h
(ii) úNj Yla;sh = mgh 1S
= pvgh
40 x 106 = 8 x 106 h
6 6
40 x 10 = 8 x 10 h
h = 5m

2
05' (A) (i) y = 4x + 32x + 48
= 4 (x + 4)2 - 16
wef,ys .eUqr } 16 m
(ii) wju ,laIfha §
x+4=0
x = -4
\ yereï ,laIHh } ^-4" -16&
(iii) A yd C ,laIH i|yd y = 0 ksid
\ 0 = 4 (x + 4)2 - 16
0 = (x + 6) (x + 2)
x + 6 =0 fyda x+2=0
x = -6 x = -2
\ A º (-6, 0) , B º (-2, 0)

(iv) x - y úg y = 4 (0)2 + 32 (0) + 48

\ y wlaIHh fþokh lrk ia:dkh (0, 48) fõ'
(b) (i) y = -12x
x = 2 Þ y = - 12 (2)
= -24
E º (2, -24)

^04&
 (ii) DF = O - (-24) = 24 m
(iii) G º (-10 , -24) H º (-8, 0)
GH ys iólrKh y = mx + C
(-10, -24) Þ -24 = m (-10) + C ¬ (1)
(-8, 0) Þ 0 = m (-8) + C ¬ (2)
(2) - (1) 24 = 2 m
12 = m
(2) ka 0 = 12 (-8) + C
96 = C
\ iólrKh y = 12x + 96

(C) (i) 1 (8 + 12) x 24 - 130 = 110m2

2
3
(ii) 400 x 130 = 52000m

3
(iii) 1040000m
= 8000 S
130m2 x 40ms-1

06' (a) (i) 71 - 90

(ii)

mx;s m%dka;r ksjdi .Kk ixÑ; m%;sY;

mx;s udhsu mx;s ,l=K fx
^ixLHd;h& ixLHdkh ixÑ; ixLHdkh
11 - 30 10 10.5 - 30.5 20.5 205 10 5
31 - 50 30 30.5 - 50.5 40.5 1215 40 20
51 - 70 35 50.5 - 70.5 60.5 2117.5 75 37.5
71 - 90 65 70.5 -90.5 80.5 5232.5 140 70
91 - 110 30 90.5 - 110.5 100.5 3015 170 85
111- 130 25 110.5 - 130.05 120.5 3012.5 195 97.5
131 - 150 05 130.5 - 150.5 140.5 702.5 200 100

200 15500

(iii) x = åfx (iv) 130.5 - 30. 5 = 100

åf (v) 15 500 x 40 = re' 620 000

15 500
=
200
= 77.5
13 fY%aKsh ^ms<s;=re m;%h& ;dlaIKfõoh i`oyd úoHdj - II

(c) (i) Q1 = 58.5 Q2 = 96.5 (iii) 116.5

wka;Ya p;=¾:l mrdih } 96' 5 - 58 ' 5
} 38
(ii) 140 g wvq m%;sY;h } 98 ]
140 g jeä m%;sY;j } 2 ]
140 g jeä mßfNdackhla we;s ksjdi .Kk
.Kk } 200 x 2
100
}4

(d) (60.5 x 35 x 3) + (80. 5 x 65 x 4) + (100.5 x 30 x 5) + (120.5 x 35 x 6) + (140.5 x 7x 7)

= 6352.5 + 20 930 + 15075 + 18075 + 6884.5
= 68845
uq¿ wu;r .dia;=j = re' 68845

07' (a) (i) >k øjH jdIam ùu ^,' 05&

(ii) wdi%jkh $ bá u.ska f;rmSu $ ødjl ksiaidrKh ^,' 19&
(iii) A - je,s B - f;; mq¿ka C - wixY=oaO Ydl ksiaidrlh ^,' 19&
(iv) ;dmh taldldÍj ,nd §u' ^,' 05&
(v) u;=msg isis,a lsÍu' ^,' 05&
(vi) iajNdúl øjH laIKùu' $ w;=re wdndO wêl ùu $ iajNdúl m%Nj j.ska øjH
ksiaidrKh wmyiq ùu' ^,' 15&
(vii) kj ksIamdok mshrjla ;sîu' $ ;dlaIKslj fhdod.; yels ùu' $ kj woyila ùu'^,' 15&
(vii) kj ks¾udKh ms<s.ekSu' $ kj ksmehqïlrejd Èßu;a lsÍu' ^,' 10&
B (i) c, wmøjH jdIamYS,s .kaOhla iys; oaú;sl mßjD;a;c ^,' 04&
(ii) l=re÷ - iskue,a äyhsâ
lrdnqkeá - bhqßfkda,a
me`.sß - isï/,a ^,' 12&
(iii) M- ñksia n,h M- wuq øjH M - uqo,a
M - l%ufõo M - hka;% iQ;% ^,' 20&
(iv) ñksia n,h ^,' 05&
(v) iq,n ùu' $ ixY=oaO ùu $ mQK¾ckkSh ùu ^,' 19&
(vi) ld¾hlaIu ùu $ ñksidg isÿjk ydks wju ùu' ^,' 08&
08' (a) (i) A - fu;fkd,a B - NaOH C - ffcj ãi,a
D - fmfg%d,shï ãi,a ^,' 24&
(ii) P - g%dkaiatiagÍlrKh q - c,h nqqnq,kh g - fmÍu ^,' 18&
(iii) inka ksmoùu md,kh ^,' 06&
(iv) mgo, Zno, Zno2 ^,' 06&
(v) fu;fkda,a ldnksl øjH meiSu u`.ska ,nd .ekSu' ^,' 10&
(vi) zzfmfg%da,shï ãi,a 80]+ ffcj ãi,a 20 ] ^,' 06&

^05&
 (vii) oykfha § msgjk Co2 Ydl u.ska kej; ;sr lsÍu' ^,' 06&
(viii)f;,a 1 g l wvx.= ksoyia fïo wï, Wodiskhg wjYH KoH m%udKh ^,' 10&
(ix) inka we;sùu' ^,' 06&
(b) (i) ir, wdi%jkh ^,' 07&
(ii) wdi%e;s c,h $ we;eï i.kaO f;,a ^,' 19&
(iii) ,sìka lkafvkai¾ ;,h by<g lr we¢h hq;=h' ^,' 07&
(iv) A - ,sìla lkafvkairh B - ;si,a mqkS,h ^,' 20&
(v) by, WIaK;ajfha § .=K ydks fkdùu' ^,' 04&
(vi) moaO;sfha mSvkh jdhq f.da, mSvkhg iudk lsÍu' ^,' 04&

09' (a) (i) (FA( (ii) iudkq md;sl iSudj ;=, § m%;dia: ;ka;= u;
we;s ú;;sh" th we;s lrkakd jQ wd;;shg
wkqf,dauj iudkqmd;s; fõ'

(e l (
(a) wdk; m%;H n,h } F
A
(iii)
4m 30 N 30 N
= 2 = -3 2
pr 3 x (0.40 x 10 )
3kg
30N 30
= -6
0.1600 x 10
e
(b) ú;%shdj } l 107
=
3 x 10-4 0.1600
= = 0.75 x 10-4
4 = 6.25 x 107 Nm-2

( FA (
(c) y=
( el (
7
6.25 x 10
y=
0.75 x 10-4
2 x 1011 x 6 x 10-6 x 1 x 10-3
(iv) F = 8 y = 8.33 x 1011 Nm-2

F = 150N

Yla;sh } 1
2 Fe
1 x 150 x 1 x 10-3
=
2
= 0.075 J

^06&

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 (b) (i) legfmda,h $ ÿkak
(ii) (a) (b) m%;Hia: ú' Y } 1 mv2
1 2
E= 2 xfx 1 x 10g x v2
0.8 J =
2
1 1 10 2
E = 2 x 8N x 2 cm 0.8 = x
2 100 v
1 0.8 = 0.005 v2
E = 2 x 8N x 0.02 cm
-1
v = 0.02 ms
E = 0.08 J

u
10. (a) (i) Ndysr n,h (b) (i)
N%uK wlaIfha isg ,ïNl ÿr u = vpg
4m 6m
(ii)
12 kg
p=
120 N T v
-3
12 kg
1500 kgm =
v
T x 6m = 4 x 120N
12
T = 80 N v=
1500
u = vpg 3
v = 0.008m
u = 0.008 x 1200 x 10
u = 96 N

(ii) 4m 6m 4m 6m

96N
T 24 N T

120N T x 6 m = 24 N x 4 m
T = 16 N

(iii) x (10 -x)

24 x x = (10 - x) x 80N
24x = 800 - 80 x
24 N 80N
104 x = 800
x = 7.69m ^ol=Kg&
(C) (i) 96N
R = 120 - 96
R = 24 N

120N

(ii) F = ma
24 N = 12 kg x a
-2
a = 2ms

(30) WWW.PastPapers.WiKi (30)

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