CG Board 12th Sample Paper Elements of Science

छत्तीसगढ़ माध्यमिक
शिक्षा मण्डल

Model Paper

CGBSE Sample Paper
(Practice Paper)

CGBSE Model Paper
-- AGLASEM --

d{kk&12oha
fo"k; & foKku ds rRo ¼631½
iw.kkZd & 75 le; & 3 ?k.Vs

funsZ”k &
01- iz”u Ø- 01 oLrqfu’B iz”u gSA blesa nks [k.M gksaxsA [k.M ¼v½ ,oa [k.M ¼c½A [k.M ¼v½ esa
cgqfodYih; iz”u ,oa [k.M ¼c½ esa fjDr LFkkuksa dh iwfrZ okys iz”u gSA [k.M ¼v½ esa 10 iz”u
,oa [k.M ¼c½ esa 05 iz”u gS izR;sd ij 01 vad vkcafVr gSA
(A) Question No 1 is objective type question. It has two section - section (A), section (B). In section
(A) Multiple choice question and in section (B) fill in the blanks, section (A) has 10 questions and
section (B) has 5 questions and each question carries 1 mark.
02- iz”u Øekad 2 ls 7 rd vfr&y?kqmÙkjh; iz”u gSA izR;sd iz”u ij 2 vad vkcafVr gSA mÙkj dh
vf/kdre “kCnlhek 30 “kCn gSA
Question No 2 to 7 are very short answer type question. Each question carries 2 mark maximum word-
limit of answer is 30 words.
03- iz”u Øekad 8 ls 14 rd y?kq&mÙkjh; iz”u gSA izR;sd iz”u ij 3 vad vkcafVr gSA mÙkj dh
vf/kd “kCnlhek 50 “kCn gSA
Question No 8 to 14 are short answer type question. Each question carries 3 mark maximum word-
limit of answer is 50 words.
04- iz”u Øekad 15 ls 17 rd nh?kZ&mÙkjh; iz”u gSA izR;sd iz”u ij 4 vad vkcafVr gSA mÙkj dh
vf/kd “kCnlhek 75&100 “kCn gSA
Question No 15 to 17 are long answer type question. Each question carries 4 mark maximum word-
limit of answer is 75-100 words.
05- iz”u Øekad 18 ls 20 rd nh?kZmÙkjh; iz”u gSA izR;sd iz”u ij 5 vad vkcafVr gSA mÙkj dh
vf/kdre “kCnlhek 150 “kCn gSA
Question No 18 to 20 are long answer type question. Each question carries 4 mark maximum word-limit
of answer is 150 words.

iz”u 01- [k.M ¼v½ lgh fodYi pqudj fyf[k,A
section (A) Choose and write the correct option. [1X10=10]

I. rkjs gS & [1]
(v) xzg (c) Loa;nhIr oLrq
(l) mixzg (n) vnhIr oLrq
Stars are.
(A) Planets (B) Self- Luminous bodies
(C) Satellites (D) Non- Luminous bodies

II. rsy yxk gqvk dkxt gS & [1]

(v) ikjn”kkhZ (c) vikjn”khZ
(l) vilkjh (n) ikjHkklh
Oiled paper is.
(A) Transparent (B) opaque
(C) Divergent (D) Translucent.

III. Ckkny bl dksykWbM ra= dk mnkgj.k gS & [1]
(v) ,eYlu (c) lkWy
(l) ,jkslkWy (n) tsy
Cloud is an example of this colloidal system.
(A) Emulsion (B) Sol
(C) Aerosol (D) Gel

IV. ,d v”o “kfDr esa okWV gksrs gS & [1]
(v) 746 okWV (c) 7460 okWV
(l) 74600 okWV (n) 764 okWV
How many watts there in are horse power.
(A) 746 watts (B) 7460 watts
(C) 74600 watts (D) 764 watts

V. mRizsjd dh mifLFkfr esa vfHkfØ;k dh nj esa o`f) gksuk dgykrk gS & [1]

(v) vkRe&mRizsj.k (c) /kukRed mRizsj.k
(l) izsfjr&mRizsj.k (n) _.kkRed mRizsj.k
Increase in rate of reaction in present of catalyst is called-
(A) Self-catalyst (B) Positive catalyst
(C) Induced catalyst (D) Negative cataylst

VI. IysfVue mRizsjd mnkgj.k gS & [1]

(v) /kukRed mRizsjd dk (c) _.kkRed mRizsjd dk
(l) vkRe& mRizsjd dk (n) izsfjr mRizsjd dk
Platinum (pt) catalyst is an example of
(A) Positive catalyst (B) Negative catalyst
(C) Auto - catalyst (D) Induced catalyst

VII. ,YdksgkWy dk mi;ksx gksrk gS & [1]

(v) nokn;kW cukus esa (c) isUV cukus esa
(l) lkcqu cukus esa (n) mijksDr lHkh

Model Q-Paper 2025-26 Page 2

Alcohol is used in -
(A) Making medicines (B) Making paints
(C) Making soap (D) all of the above.

VIII. “khry is; ds fuekZ.k esa mi;ksxh gS & [1]

(v) NH4Cl (c) CH3CooH
(l) Na2Co3 (n) NaHCo32H20
Useful in formation of cold drink is -
(A) NH4Cl (B) CH3CooH
(C) Na2Co3 (D) NaHCo32H20

IX. vkyw dk okuLifrd uke gS & [1]

(v) lksyus e V~;cw jksle (c) ,fy;e lsik
(l) lksysue esyksatsu (n) ykbdksiflZde ,LdqysaVe
The botanical name of potato is -
(A) Solanum tuberosum (B) Alium sepa
(C) Solanum melongena (D) Lycopersiam esculentum

X. ikS/kksa dh tM+ksa dh o`f) esa mi;ksxh gS & [1]

(v) iksVSf”k;e (c) ukbVªkstu
(l) QkWLQksjl (n) mi;qZDr lHkh
Useful in the growth of roots of plants.
(A) Potassium (B) Nitrogen
(C) Phosphorus D) All of the above.

iz”u 01- [k.M ¼c½ fjDr LFkkuksa dh iwfrZ dhft,A
section (B) Fill in the blanks: [1X5=05]

I. --------------- uked thok.kq }kjk dkWyjk jksx gksrk gS [1]
Cholera disease is caused by bacteria called ----------

II. Xywdkst ls ikb:fod vEy dk cukuk -------------------------- dgykrk gSA [1]
Formation of pyruvic acid from glucose is called-------------

III. ,slk foy;u ftldh lkUnzrk Kkr gks -------------------------- foy;u dgykrk gSA [1]
A solution whose concentration is know is called an --------------------- solution.

IV. Na2Co3 dk rqY;kadh Hkkj -------------------------- gksrk gSA [1]
The equivalent weight of Na2Co3 is ----------- .

V. Okk’iksRltZu dh nj ukius ds fy, iz;qDr midj.k dk uke -------------- gSA [1]
The name of the instrument used to measure the rate of transpiration is --------------

Model Q-Paper 2025-26 Page 3

iz”u 02- o.kZ fo{ksi.k dks ifjHkkf’kr dhft,A (2)
Define dispersion of light.
iz”u 03- ifjukfydk fdl izdkj cukbZ tkrh gS\ (2)
How is solenoid made?
iz”u 04- twy ds fu;e dks fyf[k,A (2)
Write the joule’s law.
iz”u 05- m|kudkjh ds dksbZ nks ykHk fyf[k,A (1+1=2)
Write two advantages of gardening.
iz”u 06- ikS/kks esa ukbVªkstu dk egRo dks crkb, ¼dksbZ nks½ (1+1=2)
Explain the importance of nitrogen in plants. (any two)
iz”u 07- nSfud thou esa lw{etho foKku ds dksbZ nks egRo crkb,A (1+1=2)
Give two importance of microbiology in daily life.
iz”u 08- pUnz xzg.k D;k gS\ lfp= le>kb,A 1+2=3
What is lunar eclipse? Explain with diagram.
iz”u 9- fo|qr pqEcd ds rhu mi;ksx fyf[k,A 1+1+1=3
Write three uses of electromagnet.
iz”u 10- nzoLusgh rFk nzofojks/kh dksykWbM esa rhu varj fyf[k,A 1+1+1=3
Write any three differences between lyophilic and hydrophobic colloids.
iz”u 11- mnklhuhdj.k D;k gS\ mnkgj.k nsdj le>kb,A 1+2=3
Write is neutralization, explain with example.

iz”u 12- fuEu ij laf{kIr fVIif.k;kW fyf[k,A 1 +1 =3

¼i½ mRiszjd mRlkgd
¼ii½ _.kkRed mRiszjd
Write short notes on the following
(i) Catalytic promoter
(ii) Negative catalyst
iz”u 13- ØwlhQsjh dqy dk vkfFkZd egRo crkb,A 1+1+1=3
Explain the economic importance of cruciferous family.
iz”u 14- vkWDlh “olu ,oa vukWDlh “olu esa vUrj fyf[k,A ¼dksbZ rhu½ 1+1+1=3
Write difference between aerobic and anaerobic respiration. (Any three)
iz”u 15- fo|qr cYc dk ukekafdr fp= cukdj mldh jpuk dk o.kZu dhft,A 2+2=4
Draw a labeled diagram of an electric bulb and describe its structure.

vFkok (OR)

Model Q-Paper 2025-26 Page 4

fo|qr&bLrjh dk ukekaafdr fp= cukdj mldh jpuk dk o.kZu dhft,A 2+2=4
Draw a labeled diagram of an electric iron and describe its structure.

iz”u 16- fuEufyf[kr ds jklk;fud uke jklk;fud lw= ,oa dksbZ 2 mi;ksx fyf[k,A 1 +1+2=4
¼i½ [kkus dk lksMk ¼ii½ uhyk FkksFkk

Write chemical names, chemical formula and two uses of the following.
¼i½ Baking soda ¼ii½ Blue vitriol

vFkok (OR)
fuEufyf[kr ds jklk;fud uke] jklk;fud lw= ,oa dksbZ 2 mi;ksx fyf[k,A
¼i½ lksfM;e csUtks;V ¼ii½ veksfu;e DyksjkbM
Write chemical name, chemical formula and two uses of the following.
¼i½ Sodium benzoate ¼ii½ Ammonium chloride

iz”u 17- izdk”k&la”ys’k.k dk pkj egRo crkb,A 1+1+1+1=4
Write four importance of photosynthesis.
vFkok (OR)
ok’iksRltZu ds dksbZ pkj egRo crkb,A
Write four importance of transpiration.

iz”u 18- fizTe esa izdk”k dk o.kZfo{ksi.k lfp= le>kb,A 2 +2 =5
Explain dispersion of light through prism with diagram.
vFkok (OR)
ljy lw{en”khZ dh jpuk crkb, ,oa mlds }kjk cuus okys izfrfcEc dks lfp= le>kb,A
Write the structure of simple microscope and explain the image formed by it with example.

iz”u 19- Hkw&ifj’dj.k laca/kh ik¡p ;U=ksa dk lfp= o.kZu dhft,A 1+1+1+1+1=5
Describe about the five tillage related implement’s with diagram.

vFkok (OR)
ikS/kjksi.k i)fr dks lfp= le>kb,A ¼dksbZ ik¡p½
Explain the system of planting with diagram. (Any five)

iz”u 20- euq’;ksa esa thok.kq ls gksus okys ik¡p jksxksa o jksxdkjd thok.kq ds uke fyf[k,A
Write the name of five diseases caused by bacteria in humans and the names of bacteria causing
disease. 1+1+1+1+1=5
vFkok (OR)
fdUgha ik¡p thok.kqvksa ,oa muls mRikfnr ,.Vhck;ksfVd ds uke fyf[k,A
Write the name of any five bacteria and antibiotics produced by them.

Model Q-Paper 2025-26 Page 5

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