Model Question Of C. science SLC
Compulsory
Science
Set 1
Time: 2:15 hours Full
Marks: 75
Pass
Marks: 24
Candidates
are required to give their answers according to the given instructions.
!=
-s_ tf}n / lk08aLr kfOg] s'g} @ j6f
leGgtf n]Vg'xf];\ .
b'O{ j:t'x?aLrsf]
u'?Tjfsif{0f an 400 N 5 . olb tL a:t'x?aLrsf] b"/L
bf]Aa/ agfO{G5 eg] ltlgx?aLrsf] u'?Tjfif{0f an kQf nufpg'xf];\ . (2+2=4)
Write
down any two differences between weight and mass. The gravitational force
between two bodies is 400 N. If the distance between the centre doubled, find
the gravitational force between them.
-v_ hnljB'taf6 k|fKt ug{ ;lsg] s'g} @ j6f kmfObf / Ps j6f a]kmfObf
n]Vg'xf];\ . zlQm ;+ª\s]t x'g ;Sg] s'g} @ j6f sf/0fx? n]Vg'xf];\ . (1.5+2=3.5)
Write
down any two advantages and one disadvantage of hydro electricity. Write down
any two effects that can be obtained from energy crisis.
2. -s_ cfs{ldl8hsf] lgod n]Vg'xf];\ .
j:t' t/n kbfy{d lsg 8'A5 < wfl/nf] rSs'n] ;lhn};Fu
sf6\5 . lsg<
State Archimedes' principle.
Why an object immersed in liquid? Knifecut well,when it is sharp, Why? (1+1+1.5 = 3.5)
-v_ pw{rfksf] kl/efiff n]Vg'xf];\ . lsg dl;gf]
lkmQfePsf] :s'nAofu af]Sg ufx|f] x'G5<1 mnDafOePsf] 3gfsf/
kfgL 6\ofª\sLsf] lkFwdfsltrfk kb{5, lx;fa ug{'xf];\ .(g = 9.8m/s2)
Define up thrust. Why is it
difficult to hold a school bag having a strap made of a thin string? Calculate
the pressure exerted at the bottom of a cubical tank of length 1 meter.(g=
9.8m/s2)(1+1+2 = 4)
# -s_ 1 Sofnf]/L eg]sf] s] xf] < kfgLsf] ljlzi6 tfkwf/0f Ifdtf 4200
J/kgoc 5 . 34oc tfkqmd ePsf] kfgLnfO{ lr:ofP/ 4oc emfbf{ o;n] 25,20,000J tfkzlQm u'dfpF5 eg] kfgLsf] lk08 slt xf]nf < kf/f] slt tfkqmddf hD5
< (1+2+0.5=3.5)
What
is 1 calorie? Specific heat capacity of water is 4200j/kgoc. what is
the mass of water which loses
25,20,000J heat energy from 34o c of it’s temperature reduced into 4oc? In
what temperature does mercury freeze?
-v_ n]G;sf] s]Gb|Ls/0f b"/L eg]sf] s] xf]
< sGe]S; n]G;sf] 6cm cuf8L /flvPsf] j:t'sf] cfs[lt sxfF aG5 , ls/0f /]vf lrqaf6
b]vfpFg'xf];\ . o; n]G;sf] s]GbLs/0f b"/L 3cm 5 . cfs[ltsf]
lj:t[lt klg kQf nufpg'xf];\ . 1+2+1=4
What
is focal length? Show an image by a ray diagram of an object kept at 6cm in
front of the convex lens. This lens has
3cm of focal length. Also, find out the magnification of the image.
4. (a) o"h
eg]sf] s] xf] <
b'O{j6f 1.5 ef]N6df ;]nx¿sf] ;xoftfåf/f b'O{j6f 3
ef]N6sf] lrdx¿ k"0f{ pHofnf] lbO{ afNg cfjZos kg]{ ;ls{6 /]vf lrq
lvRg'xf];\ . o; h8fgnfO{ s] elgG5 < 1+2.5=3.5
What is a fuse? Draw a circuit diagram to glow two bulbs
of 3 volt with full brightness with the help of two cells of 1.5 volt each.
What is the name of the type of connection?
(b) df]6/ c;/ eg]sf] s] xf] < lkmnfd]G6sf] tf/ agfpg s'g
wft' k|of]u ul/G5<
220 V k|jfx ePsf] ljB't kl/kydf 5A Ifdtf ePsf] o'h /fVbf 100 af6 Ifdtf ePsf] sltj6f lrdx¿ ;'/lIft 9ª\un] h8fg
ug{ ;lsG5 < 1+1+2=4
What is motor effect? Name the metal
which is used to make filament wire? A circuit with 220V is supplied with a
fuse of 5A. How many bulbs of 100W can be safely used in the circuit?
%= -s_ lbOPsf] b'O{ tTjx?sf] O{n]S6««f]lgsljGof;sf] cfwf/df ;f]lwPsf
k|Zgx?sf] pQ/lbg'xf];\ . 1+1.5+0.5
Answer the following questions on the basis of
electronic configuration of two elements are given below.
A -1S2
2S2 2P6 3S2
B
– 1S2 2S2 2P4
(i) oL b'O{ tTjx? ;+of]hg eO{ aGg]
of}lussf] c0f' ;"q n]Vg'xf];\ .
Write down the
molecular formula of the compound form by combination of these two elements.
(ii) dfly ag]sf] To; of}lusdf s]xL yf]kf
kfgL /fVbf x'g] /f;folgs k|ltlqmofsf] ;Gt'lnt ;"q ;lds/0f n]Vg'xf];\ . of]
s:tf] k|sf/sf] /f;folgs k|ltlqmof xf] <
What happen when
we kept some drops of water in that compound? What kinds of chemical reaction
is this?
-v_ Pdf]lgod Snf]/fO8 / SoflN;od
xfO8«f]cS;fO8sf] ld>0fnfO{ ttfpbf s'g Uof; aGb5 < pQm Uof; k|of]uzfnfdf
tof/ kfbf{ rflxg] pks/0fsf] gfdfª\sLt lrq agfpg'xf];\ . 8fO{nOyfOn Oy/sf]
;+/rgfTds ;"q n]vL o;sf] Ps pkof]uLtf n]Vg'xf];\ . 0.5+2.5+1.5
Which gas is
produced when a mixture of ammonium chloride and calcium hydroxide is heated?
Show with the help of labeled diagram how is this gas collected in laboratory.
Write structural formula of diethyl ether. Give one use of it.
^ -s_ Argentite af6 s'g wft' k|fKt u/LG5 < rfFbLnfO{ uf9f ;Nkm\o'/Ls cDn;Fu k|ltlqmof u/fpFbf
k|fKt x'g] ;Gt'lnt ;lds/0f b]vfpg'xf];\ . Iff/ / cNsfnLaLr s'g} b'O{ cGt/
n]Vg'xf];\ . [0.5+2+2]=4.5
Which metal do we
get from argentite ore. Show the balanced chemical equation for the reaction
when silver reacts with concentrated sulphusir acid.Write any two differences
between base and alkali.
-v_ l;d]G6 agfpFbf rlxg] d'Vob'O sRrf kbfy{x?sf] gfd n]Vg'xf];\ .
cuf{lgsdn /f;folgsdn eGbf /fd|f] x'G5 lsg < s'g} b'O{ pko'Qm sf/0f lbg'xf];\
. [1+2]
Write the main
two raw materials required for the manufacturing of cement. Organic fertilizers
are better than chemical fertilizers. Justify with any two suitable
reasons.
7 a) efO/; ha;Dd lhljt sf]ifsf] ;Dks{df cfpFb}gg\ ta;Dd lglh{jsf] Jojxf/
u5{, pQm egfOnfO{ k'li6 u/ . lgDg efux?sf]Pp6f sfo{ n]v . (1+3)
Virus shows
non living behavior until it comes to living cells. Write the one function of
the following parts.
i)
rfns :gfo' (motor nerve)
ii)
;]G;/L :gfo' (sensory nerve)
iii)
;]/]a|f]– :kfOgn ˆn'8 (cerebro-spinal fluid)
b) x]dfUnf]aLg eg]sf] s] xf]
< of] /utsf] s'g efudf kfOG5 < o;sf] sfo{ n]v . (1+2.5)
What is
hemoglobin? In which part of the blood dues it found? Write the function of
hemoglobin.
*=-s_lbOPsf] lrq pGo'sf] hLjg rqmsf] s'g cj:yf xf] < pGo'sf]
hLjgrqmdf cN6/g]zg ckm h]g]/];g eg]sf] s] xf] < l8KnfO{8 qmf]df]hf]d eg]sf]
s] xf] < ldcf]l;;\ sf]if ljefhgnfO{ l/8S;g
ljefhg elgG5, lsg <
Which
stage of life cycle of fern is shown in the given diagram ? What is alternation
of generation in the life cycle of fern ? What are diploid chromosomes ? Why
meiosis is called reduction division ?
-v_ cd}y'lgs k|hgg\ eg]sf] s] xf] < cfn'nfO{ 6'qmf6'qmf
sf6]/ /f]Kg'kg]{ s'g} b'O{cf]6f sf/0fx¿ lbg'xf]; .
What
is asexual reproduction? Pototo use to planet by malairs piran, Why?
(= s_ kfl/l:ylts k|0ffnLdf h}ljs tTjnfO{ stL ;d'xdf
ljefhg u/LPsf] x'G5 < ltgLx?sf] gfd n]Vg'xf];\ . dflg;sf] j}1flgs gfd
n]Vg'xf];\ . ds}sf] jlu{s/0f ug{'xf];\ . 1.5+1+1=3.5
Biotic factors of an ecosystem are classified into
how many groups? Name them. Write the scientific name of human being. Classify
maize plant.
v_ d]08nn] s]/fpnfO{ g} cfˆgf]
k|of]usf] nfuL 5fGg'sf] s'g} b'O{j6f sf/0fx? n]Vg'xf];\ . l8PgP / cf/PgP aLr
kfO{g] b'O{j6f leGgtfx? n]Vg'xf];\ . 2+2=4
Why did Mendel choose pea plant
for his experiment? Give any two reasons. Write two differences between DNA and
RNA.
10. -s_ k[YjL
pTklQaf/] lhG; / h]k|]msf] kl/sNkgfsf] cfwf/df ;+If]kdf AofVof ug'{xf];\ . df5f
/ 8fOgf];/x¿ pTklt ePsf sfn (Period) sf] gfd n]Vg'xf];\ . xl/tu[x k|efjsf s'g} @ jtf c;/x¿
n]Vg'xf];\ . (1.5+ 1+ 2=4.5)
Explain in brief about the origin
of the earth on the basis of Jean and Jerrrey’s hypothesis. Name the periods in
which fish and dinosaurs were evolved. Write down any two effects of greenhouse
effect.
-v_ pNsfx¿ k|foh;f]
k[YjLsf] ;txdf cfOk'Ub}gg\ , lsg < ;]tf]jfd tf/f / ;'k/gf]ef tf/faLr kfOg]
s'g} @ j6f leGgtf n]Vg'xf];\ . (1+
2=3)
Generally meteors cannot reach on
the earth’s surface, why ? Write down any two differences between a white dwarf
star and supernova.