CG Board 10th Sample Paper Science

छत्तीसगढ़ माध्यमिक
शिक्षा मण्डल

Model Paper

CGBSE Sample Paper
(Practice Paper)

CGBSE Model Paper
-- AGLASEM --

d{kk & 10oh
Class -10th
fo"k;& foKku ¼200½
Subject - Science (200)
le;% 03 ?k.Vs iw.kkZad & 75
Time: 03 hours Max Marks-75

funsZ’k %
1- ç'u la[;k 1 ,d oLrqfu"B çdkj dk ç'u gksxk] ftlesa nks [kaM gksaxs :-
i) [kaM "A" esa 10 cgqfodYih; ç'u ¼MCQ½ gksaxAs çR;sd ç'u 01 vad dk gksxkA
ii) [kaM "B" esa 05 cgqr NksVs mÙkj okys ç'u ¼,d 'kCn esa mÙkj½ gksaxAs çR;sd ç'u 01 vad dk gksxkA
2- ç'u la[;k 2 ls ç'u la[;k 6 rd y?kq mÙkjh; çdkj&¼SA-I½ ç'u gksaxAs çR;sd ç'u 02 vadksa dk gksxkA
30 'kCnksa dh lhekA
3- ç'u la[;k 7 ls ç'u la[;k 11 rd y?kq mÙkjh; çdkj&¼SA-II½ ç'u gksaxAs çR;sd ç'u 03 vadksa dk
gksxkA 50 'kCnksa dh lhekA
4- ç'u la[;k 12 ls ç'u la[;k 16 rd nh?kZ mÙkjh; çdkj &¼LA-I½ ç'u gksaxAs çR;sd ç'u 04 vadksa dk
gksxkA 75&100 'kCnksa dh lhekA
5- ç'u la[;k 17 ls ç'u la[;k 19 rd nh?kZ mÙkjh; çdkj &¼LA-II½ ç'u gksaxAs çR;sd ç'u 05 vadksa dk
gksxkA 100&150 'kCnksa dh lhekA
6- uksV & –f"Vckf/kr Nk=ksa ds fy,] fp=@pkVZ ds LFkku ij lS)kafrd ç'u fn, tk,axAs
Instructions:
1. Question No. 1 is an objective type question which will have two sections:-
(i) Section "A" will have 10 Multiple Choice (MCQ) questions. Each carries 01 mark.
(ii) Section "B" will have 05 very short answer questions (answer in one word) .Each carries 01
mark.
2. Question No. 2 to Question No. 6 will be short answer type-I (SA-I) questions. Each carries 02
marks. 30 words limit
3. Question No. 7 to Question No. 11 will be short answer type-II (SA-II) questions. Each carries 03
marks. 50 words limit
4. Question No. 12 to Question No. 16 will be long answer type (LA-I) questions. Each carries 04
marks. 75-100 words limit
5. Question No. 17 to Question No. 19 will be long answer type (LA-II) questions. Each carries 05
marks. 100-150 words limit
Tip - For visually impaired students, theoretical questions will be given in place of drawing/chart.

iz”u Ø- 01
[k.M ^^v** lgh fodYi pqudj fyf[k, %&
Choose and write the correct option: [1x10=10]

01- ^^izkd`frd p;u dk fl)kar** dk izfriknu fd;k Fkk&
(a) ohteSu (b) ysekdZ (c) pkYlZ MkfoZu (d) Mh- czht

The theory of “Natural Selection” was propounded by
(a) Weisman (b) Lamarck (c) Charles Darwin (d) D. Bridge

Model Q-Paper 2025-26 Page 1

02- fljds esa ik;s tkus vEy gS&
(a) ,lhfVd vEy (b) gkbMªksDyksfjd vEy (c) ukbfVªd vEy (d) QkfeZd vEy
The acid found in vinegar is-
(a) Acetic acid (b) Hydrochloric acid (c) Nitric acid (d) Formic acid

03- fof”k’V m"Ekk dk S.I. ek=d gS&
(a) dSyksjh@xzke@lsV a hxzsM (b) twy@fdyksxzke@dsfYou
(c) dSyksjh@fdyksxzke@dsfYou (d) dSyksjh

The S.I. unit of specific heat is
(a) Calorie/gram/°C (b) Joule/kilogram/Kelvin
(c) Calorie/kilogram/°C (d) Calorie

04- vtSo ?kVd gS&
(a) eNyh (b) ok;q (c) dqRrk (d) xk;

An abiotic factor is-
(a) Fish (b) Air (c) Dog (d) Cow

05- fdl gkeksUZ l ds la”ys’k.k gsrq vk;ksMhu vko”;d gS\
(a) bUlqfyu (b) ,Mªksukfyu (c) Fkk;jkDlhu (d) vkDlhu

Which hormones require iodine for synthesis?
(a) Insulin (b) Adrenaline (c) Thyroxine (d) Oxytocin

06- LuSy dk fu;e lacaf/kr gS&
(a) ijkorZu (b) viorZu
(c) niZ.k (d) ljy js[kh; lapj.k

Snell’s law is related to-
(a) Reflection (b) Refraction
(c) Dispersion (d) rectilinear propagation

07- Xkksyh; niZ.k dh Qksdl nqjh & 5cm gS] mldh oØrk f=T;k gksxh&
(a) 15cm (b) . -15cm (c) 30cm (d) -30cm

Focal length of Spherical mirror is - 5cm, its radius of curvature will be.
(a) 15cm (b) . -15cm (c) 30cm (d) -30cm

08- fuEu esa ls dkSu lk lewg CH3CH2CHO esa fØ;kRed lewg gS&
(a) CHO (b) -OH (c) >C=O (d) COOH

Model Q-Paper 2025-26 Page 2

Which of the following groups is the functional group in propanal -
(a) CHO (b) -OH (c) >C=O (d) COOH

09- IykLVj vkWQ isfjl dBksj gks tkrk gS&
(a) ikuh ds R;kxus ls (b) ikuh ds vo”kks’k.k ls
(c) CO2 ds vo”kks"k.k ls (d) CO2 R;kxus ls

Plaster of Paris harden due to -
(a) Evaporation of water (b) Absorption of water
(c)Absorption of CO₂ (d) Release of CaCl₂

10- fo'o esa laiw.kZ mtkZ dk L=ksr gS
(a) lw;Z (b) ikuh (c) gok (d) isM+ ikS/ks

The source of total energy in the world is -
(a) Sun (b) Water (c) Air (d) Plants

[k.M ^^c** Section "B"

[k.M ¼c½% ,d 'kCn esa mÙkj fyf[k,A
Write answer in one word [1x5=05]

i) fdlh ifjfLFkfrd ra= esa ÅtkZ dk yxHkx fdruk izfr”kr vxys iks"kd Lrj rd
LFkkukarfjr gksrk gS\
What percentage of energy is transferred to the next trophic level in an ecosystem?

ii) Qyksa ,oa chtksa esa vR;kf/kd ek=k esa ik, tkus okys gkeksZu dk uke fyf[k,A
Write the name of the hormone found in large quantities in fruits and seeds.

iii) dkap vkSj ikuh esa fdlesa izdk”k dh pky vf/kd gksxh\
In which will the speed of light be greater, glass or water?

iv) b'kk ds ikl ,d ,slk crZu gS ftlesa [kkuk idkus ij [kkuk fpidrk ugh gSA bu crZuksa
ij fdl inkFkZ dh ijr p<kbZ tkrh gS\
Isha has a pot that prevents food from sticking when cooked in it. What material is
used to coat these pots?

v) ued dks vk;ksfMu ;qDr cukus esa fdl inkFkZ dk mi;ksx fd;k tkrk gS\
Which substance is used to iodize salt?

Model Q-Paper 2025-26 Page 3

iz”u 02- D;k gksxk ;fn i`Foh ij lthoksa ds :Ik esa dsoy isM+&ikS/ks vkSj ekuo gh jg tk,A ¼2½
What would happen if the only living organisms on Earth were plants and
humans?

iz”u 03- Fkk;jkbM xzafFk ls dkSu lk gkeksZUl lzkfor gksrk gSA mlds deh ls gksus okyk jksx
dkSu lk gS\ ¼2½
Which hormone is secreted by the thyroid gland and which disease is caused by
its deficiency?

CH3
iz”u 04- CH3 C CH3 vkSj CH3 CH2 CH2 CH2 CH3 ¼1+1=2½
CH3
fdl izdkj dh leko;ork gSA bl ;kSfxd dk uke igpkudj uke fyf[k,A

CH3
- CH3 C CH3 and CH3 CH2 CH2 CH2 CH3
CH3
What type of isomer is this? Identify and write the name of compound.

iz”u 05- mRQqYyu dh ifjHkk"kk fyf[k,A ¼2½
Write the definition of efflorescence.

iz”u 06- lkSj iSuy] lkSj lsy ls fdl izdkj vyx gSA ¼1+1=2½
How is a solar panel different from a solar cell?

iz”u 07- pkYlZ MkfoZu ds chxy d lQj d nkSjku thoksa ds fodkl ds lac/a k esa fd, x, rhu
egRoiw.kZ voyksdu fyf[k,A ¼1+1+1=3½
Write three important observations related to the evolution of organisms during
Charles Darwin's journey on the Beagle.

iz”u 08- fuEufyf[kr esa vEyh; vkSj {kkjh; ewyd igpkfu, o mudk uke fyf[k,A
NH4C1, CuSO4, KNO3 ¼1+1+1=3½
Identify and name the acidic and basic radicals in the following:
NH4C1, CuSO4, KNO3

iz”u 09- QSjugkbV iSekus dk fp= cukdj iSekus dk vf/kdre o U;wure rkieku fyf[k,A
Draw a diagram of the Fahrenheit scale and write its maximum and minimum
temperature. =3

Model Q-Paper 2025-26 Page 4

iz”u 10- He, Ne, Ar xSls fdl izdkj dh xSls gS\ ;s rRo lkekU;r% jlk;fud vfHkfØ;k esa Hkkx
ugh ysrs gS D;ksa\ ¼1+2=3½
What type of gases are He, Ne, Ar? These elements generally do not take part in
chemical reactions, why?

iz”u 11- uhps dqN vk/kkj ds viorZukad fuEukuqlkj gS& ¼1+1+1=3½
ek/;e viorZukad
A 1.5
B 1.33
C 2.0
mDr rkfydk ds vk/kkj ij fuEu iz”uksa ds mÙkj nhft,
i) fdl ek/;e esa izdk”k dh pky vf/kdre gSA
ii) fdl ek/;e esa izdk”k dh pky U;wure gSA
iii) dkSu lk ek/;e A,B,C esa fojy gSA

Some media refractive indices are given below:
Medium Refractive Index
A 1.5
B 1.33
C 2.0
Based on the above table answer the following questions:
i) In which medium speed of light maximum?
ii) In which medium speed of light minimum?
iii) Which medium is rarest among A, B, C?

iz”u 12- vk/kqfud vkorZ lkj.kh dh pkj fo”ks"krk,¡ fyf[k,A ¼1+1+1+1=4½
Write four characteristics of the modern periodic table.

vFkok OR

eSMyhQ dh vkorZlkj.kh dh pkj fo”ks"krk,¡ fyf[k,A
Write four characteristics of Mendeleev's periodic table.

iz”u 13- ;fn ty dk viorZukad vkSj dkap dk viorZukad gks rks ty ds lkis{k dkap dk
viorZukad Kkr dhft,A ¼1+3=4½
If the refractive index of water is and the refractive index of glass is , then
find the refractive index of water with respect to glass.

Model Q-Paper 2025-26 Page 5

vFkok OR

ty dk viorZukad gS ;fn eNyh rkykc dh lrg ls 75Cm dh xgjkbZ ij izrhr gksrh
gS rks mldh okLrfod fLFkfr fudkfy,A
The refractive index of water is . If a fish appears to be at a depth of 75 cm from
the surface of the pond, find its real position.

iz”u 14- izR;korhZ /kkjk tfu= ds ukekafdr fp= cukdj mldh dk;Zfof/k fyf[k,A
Draw a labelled diagram of an alternating current generator and write its working
method. ¼2+2=4½
vFkok OR

fo|qr ehVj dk ukekafdr fp= cukdj mldh dk;Zfof/k fyf[k,A
Draw a labeled diagram of a voltmeter and write it’s working method.

iz”u 15- ekyh ds ikl nks ikS/ks gSA ,d yack (TT) vkSj nwljk (tt) cksukA mlus nksuksa ikS/kksa dks
vkil esa ladj.k djok;kA crkb,& (1+1+2=4)
i) izFke ih<h esa lHkh ikS/ks yach D;ksa izkIr gq,\
ii) bl iz;ksx ls easMy ds fu;eksa esa ls fdl fu;e dh iqf"V gksrh gS\
iii) js[kkfp= }kjk ladj.k dh izfdz;k dk o.kZu dhft,A
A gardener has two plants: one tall (TT) and the other short (tt). He crossed the
two plants. Explain.
i) Why were all the plants tall in the first generation?
ii) Which of Mendel's laws does this experiment confirm?
iii) Describe the process of cross using ray diagram.

vFkok OR
euq"; esa fyax fu/kkZj.k dh izfdz;k dks fufeZr fcanqvksa ds varxZr Li"V dhft,&
i) ekrk ,oa firk ls dkSu&dkSu ls ;qxed izkIr gksrs gSA
ii) euq"; esa fyax fu/kkZjd xq.klw= dkSu lk gS\
iii) js[kkfp= }kjk euq"; esa fyax fu/kkZj.k dh izfdz;k dk o.kZu dhft,A
Explain the process of sex determination in humans using the following points.
i) Which gametes are inherited from the mother and father?
ii) Which chromosome determines the sex of a human being?
iii) Describe the process of sex determination in humans using a diagram.

iz”u 16- xHkkZjks/ku D;k gS\ bldh dksbZ nks fof/k;ka fyf[k,A (1+1+2=4)
What is contraception? Write any two methods of it.
vFkok OR

Model Q-Paper 2025-26 Page 6

vijk D;k gS\ blds dksbZ nks egRo fyf[k,A
What is placenta and write any two of its importance.

iz”u 17- ,d fo|qr ifjiFk esa 6Ω, 8Ω vkSj 12Ω ds rhu izfrjks/k Js.khØe esa tksMk x;kA bls 2
okYV cSVjh ds lkFk tksMk tkrk gSA blds fy, fo|qr ifjiFk [khapdj fuEu dh x.kuk
dhft,A ¼2+3=5½
i) ifj.kkeh izfrjks/k
ii) ifjiFk esa cgus okyh /kkjk
In an electric circuit, three resistors of 6Ω, 8Ω, and 12Ω are connected in series
with a 2V battery. Draw the electric circuit and calculate the following:
i) Resultant resistance
ii) Current flowing in the circuit
vFkok OR

,d fo|qr ifjiFk esa 6Ω, 8Ω vkSj 12Ω ds rhu izfrjks/k lekarj Øe esa tksMk x;kA bls
2 okYV cSVjh ds lkFk tksMk tkrk gSA blds fy, fo|qr ifjiFk [khapdj fuEu dh
x.kuk dhft,A
i) ifj.kkeh izfrjks/k
ii) ifjiFk esa cgus okyh /kkjk
In an electric circuit, three resistors of 6Ω, 8Ω, and 12Ω are connected in parallel
with a 2V battery. Draw the electric circuit and calculate the following:
i) Resultant resistance
ii) Current flowing in the circuit

iz”u 18- gSesVa kbV ls yksgs ds fu’d’kZ.k dks fuEufyf[kr inksa ds vk/kkj ij fyf[k,A
i) v;Ld dk lkanz.k ¼2+3=5½
ii) vkDlkbM dk /kkrq esa vip;u dk lehdj.k
Write the extraction of iron from hematite based on the following points.
i) Formation of slag
ii) Equation for the reduction of oxide to metal.

vFkok OR
/kkrq vkDlkbM ls /kkrq fu’d’kZ.k dks fuEu inksa ds vk/kkj ij fyf[k,A
i) jklk;fud vip;u fof/k
ii) jklk;fud vip;u fof/k dk lehdj.k
Write the extraction of metal from metal oxide based on the following points.
i) Chemical reduction method
ii) Equation of chemical reduction method

Model Q-Paper 2025-26 Page 7

iz”u 19- layXu fp= esa n”kkZ;s x;s Hkkxksa ds uke fy[kdj mldk dk;Z Hkh fyf[k,A
Write the names of the parts shown in the attached diagram and also write their
functions. (1+1+1+1+1=5)

vFkok OR
layXu fp= esa n”kkZ;s x;s Hkkxksa ds uke fy[kdj mldk dk;Z Hkh fyf[k,A
Write the names of the parts shown in the attached diagram and also write their
functions.

Model Q-Paper 2025-26 Page 8

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