HBSE Class 10 Question Paper 2023 Science

CLASS : 10th (Secondary) Code No. 105
Series : Sec/Annual-2023
Roll No. SET : A
foKku
SCIENCE
(Physics, Chemistry and Life Science)
(Academic/Open)
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/Re-appear/Improvement/Additional Candidates)
le; : 3 ?k.Vs ] [ iw.kk±d : 60
Time allowed : 3 hours ] [ Maximum Marks : 60
• Ñi;k tk¡p dj ysa fd bl iz'u&i= esa eqfnzr i`"B 15 rFkk iz'u 27 gSaA
Please make sure that the printed pages in this question paper are 15 in number
and it contains 27 questions.

• iz'u&i= esa nkfgus gkFk dh vksj fn;s x;s dksM uEcj rFkk lsV dks Nk= mÙkj&iqfLrdk ds eq[;&i`"B ij
fy[ksaA
The Code No. and Set on the right side of the question paper should be written by
the candidate on the front page of the answer-book.
• Ñi;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad vo'; fy[ksaA
Before beginning to answer a question, its Serial Number must be written.
• mÙkj&iqfLrdk ds chp esa [kkyh iUuk@iUus u NksMsa+A
Don’t leave blank page/pages in your answer-book.
• mÙkj&iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr% vko';drkuqlkj gh fy[ksa vkSj fy[kk mÙkj u
dkVsaA
Except answer-book, no extra sheet will be given. Write to the point and do not
strike the written answer.

105/(Set : A) P. T. O.

(2) 105/(Set : A)
• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA jksy ua0 ds vfrfjDr iz'u&i= ij vU; dqN Hkh u
fy[ksa vkSj oSdfYid iz'uksa ds mÙkjksa ij fdlh izdkj dk fu'kku u yxk,¡A
Candidates must write their Roll No. on the question paper. Except Roll No. do not
write anything on question paper and don't make any mark on answers of objective
type questions.
• d`i;k iz'uksa ds mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u&i= iw.kZ o lgh gS] ijh{kk ds mijk
mijkUr
Ur bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the questions, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.
lkekU; funsZ'k %
General Instructions :
(i) lHkh iz'u vfuok;Z gSaA
All questions are compulsory.
(ii) oLrqfu"B ç'uksa ds lgh fodYi fy[ksaA
Write the correct option in objective type questions.

(iii) nh?kZ mÙkj okys ç'uksa esa vkarfjd fodYi dk çko/kku gSA
Internal choice has been provided in long answer type questions.
(iv) çR;sd ç'u ds vad mlds lkeus n'kkZ;s x;s gSaA
Marks of each question are indicated against it.

[k.M – v
SECTION – A
¼HkkSfrd foKku½
(PHYSICS)

1. fdlh lkekU; n`f"V ds fy, fudV fcanq gksrk gS % 1
(A) 2.5 lseh (B) 25 lseh
(C) 25 eh (D) 2.5 eh

105/(Set : A)

(3) 105/(Set : A)
The least distance of distinct vision for normal eye is :

(A) 2.5 cm (B) 25 cm

(C) 25 m (D) 2.5 m

2. fuEufyf[kr esa dkSu-lk çkÑfrd lalk/ku ugha gS \ 1

(A) ikuh

(B) feV~Vh

(C) fo|qr

(D) gok

Which of the following is not a natural resource ?

(A) Water (B) Soil

(C) Electricity (D) Air

3. fo|qr /kkjk dk SI ek=d gS % 1

(A) ,sfEi;j
(B) U;wVu
(C) oksYV
(D) twy

105/(Set : A) P. T. O.

(4) 105/(Set : A)
SI unit of electric current is :

(A) Ampere

(B) Newton
(C) Volt

(D) Joule

4. fVgjh ck¡/k fdl unh ij cuk;k x;k gS \ 1

(A) ueZnk
(B) xksnkojh
(C) xaxk
(D) ;equk

Tehri dam is built on which river ?

(A) Narmada

(B) Godavari

(C) Ganga

(D) Yamuna

5. rkjs D;ksa fVefVekrs gSa \ 2

Why do stars twinkle ?

105/(Set : A)

(5) 105/(Set : A)
6. ÅtkZ ds vPNs òksr ds D;k xq.k gksrs gSa \ 2

What are the characteristic of a good source of energy ?

7. fdlh fo|qr cYc ds rarq esa ls 0.5 A fo|qr /kkjk 5 feuV rd çokfgr gksrh gS fo|qr ifjiFk ls çokfgr
fo|qr vkos'k Kkr dhft,A 2
An electric current of 0.5 A flows through the filament of an electric bulb for
5 min. What will be the electric charge flowing through that wire ?

8. fo|qr eksVj D;k gS \ fo|qr eksVj dk ukekafdr fp= cukb, rFkk bldk fl)kar fyf[k,A 4

What is an electric motor ? Draw its labelled diagram and write its principle.

9. (a) çdk'k ds ijkorZu ds fu;eksa dks fyf[k,A 2

Write the laws of reflection of light.

(b) dksbZ oLrq mÙky ysal ds eq[; Qksdl (F1 ) rFkk 2F1 ds e/; fLFkr gSA ml oLrq ds çfrfcEc dh
fLFkfr] vkdkj rFkk çÑfr dk js[kkfp= cukb,A 2

Draw a ray diagram to show the image formed by a convex lens when the
object is placed between principal focus (F1 ) and 2F1 .

(c) ml mÙky niZ.k dh Qksdl nwjh D;k gksxh] ftldh oØrk f=T;k 36 cm gS \ 2

What is the focal length of convex mirror, whose radius of curvature is
36 cm ?

105/(Set : A) P. T. O.

(6) 105/(Set : A)
vFkok

OR

(a) çdk'k ds viorZu ds fu;eksa dks fyf[k,A 2

Write the laws of refraction of light.

(b) fuEu fLFkfr;ksa esa ç;qDr niZ.k dk çdkj crkb, ,oa çR;sd esa vius mÙkj dh dkj.k lfgr iqf"V
dhft, % 3

(i) fdlh dkj dk vxz nhi ¼gsMykbV½

(ii) fdlh okgu dk ik'oZ n`'; niZ.k

State the types of mirror used for :

(i) headlights in car

(ii) rear view mirror in any vehicle

Give reason to justify your answer in each case.

(c) ysal dk lw= fy[ksaA 1

Write the lens formula.

105/(Set : A)

(7) 105/(Set : A)
[k.M – c

SECTION – B

¼jlk;u foKku½

(CHEMISTRY)

10. buesa dkSu-lh larqfyr jklk;fud lehdj.k voLFkk ladsrksa ds lkFk lgh gS \ 1

(A) CO (g ) + 2H 2 (g ) → CH 3OH (g )

(B) CO (l ) + 2H 2 (g ) → CH 3OH (l )

340 atm
(C) CO(g ) + 2H 2(g ) → CH 3OH (l )

340°C
(D) CO(g ) + 2H 2 (l ) →CH 3OH (l )

In which of the following a balanced chemical equation with state symbols is
correct ?

(A) CO (g ) + 2H 2 (g ) → CH 3OH (g )

(B) CO (l ) + 2H 2 (g ) → CH 3OH (l )

340 atm
(C) CO(g ) + 2H 2(g ) →CH 3OH (l )

340°C
(D) CO(g ) + 2H 2 (l ) →CH 3OH (l )

105/(Set : A) P. T. O.

(8) 105/(Set : A)
11. vk/kqfud vkorZ lkj.kh fdlds vk/kkj ij Lohdkj fd;k x;k gS \ 1

(A) ijek.kq æO;eku
(B) ijek.kq Øekad
(C) U;wfDyvkWu dh la[;k
(D) U;wVªkWu dh la[;k
Which of the following forms the basis of the modern periodic table ?

(A)` Atomic mass

(B) Atomic number

(C) Number of Nucleons

(D) Number of Neutrons

12. csfdax lksMk dk jklk;fud uke D;k gS \ 1
(A) lksfM;e dkcksZusV
(B) lksfM;e gkbMªkstu dkcksZusV
(C) lksfM;e DyksjkbM
(D) lksfM;e vkWDlkbM
What is chemical name of baking soda ?

(A) Sodium Carbonate

(B) Sodium-hydrogen Carbonate
(C) Sodium Chloride

(D) Sodium Oxide

105/(Set : A)

(9) 105/(Set : A)
13. Qsjl lYQsV (FeSO 4 . 7H 2O ) fdl jax esa gksrk gS \ bls xeZ djus ij jax D;ksa mM+ tkrk gS \ 2

What is the colour of Ferrous sulphate crystals ? How does this colour change
after heating ?

14. mnklhuhdj.k vfHkfØ;k,¡ ,d mnkgj.k lfgr ifjHkkf"kr djsaA 2

What is neutralization reaction, explain with example ?

15. vkWDlhtu ¼ijek.kq Øekad 8½ vkSj lYQj ¼i0 Øekad 16½ vkorZ lkj.kh ds lewg 16 ds rÙo gSaA bu
nksuksa rÙoksa ds bysDVªkWfud foU;kl fyf[k, o buesa ls dkSu-lk rÙo vf/kd _.kfo|qr gksxk vkSj D;ksa \ 2

Oxygen (Atomic No. 8) and Sulphur (Atomic No. 16) belongs to group 16 in
periodic table. Give electronic configuration and which is more electronegative,
why ?

16. (i) mHk;/kehZ vkWDlkbM D;k gksrs gSa \ mnkgj.k nhft,A 2

What are amphoteric oxides ? Give examples.

(ii) vk?kkro/;Z o rU;rk dk vFkZ mnkgj.k lfgr nhft,A 2

Explain the meaning of malleable and ductility with example.

17. (a) fuEufyf[kr vfHkfØ;kvksa dks iwjk dhft, % 1×3=3

(i) CH 3COOH + NaHCO3 →

105/(Set : A) P. T. O.

( 10 ) 105/(Set : A)
(ii) Na + C 2H 5OH →

xeZ lkUæ H SO
2 4
(iii) C 2 H 5OH      →

Complete the following chemical reaction :

(i) CH 3COOH + NaHCO3 →

(ii) Na + C 2H 5OH →

Hot Conc. H SO
(iii) C2H 5OH 2
4
→

(b) (i) csUthu dh lajpuk cuk,¡A 1

Make a structure of Benzene.

(ii) felsy dk fuekZ.k dSls gksrk gS \ laf{kIr o.kZu nhft,A 2

Write a short note on Micelles.

vFkok
OR

105/(Set : A)

( 11 ) 105/(Set : A)
(a) fuEufyf[kr ;kSfxdksa dk ukedj.k dhft, % 1×3=3

O
||
(i) CH 3 − C − CH 3

(ii) CH 3 − CH 2 − OH

(iii) CH 3 − CH 2 − COOH

Write the names of following compounds :

O
||
(i) CH 3 − C − CH 3

(ii) CH 3 − CH 2 − OH

(iii) CH 3 − CH 2 − COOH

(b) (i) ladyu vfHkfØ;k dk o.kZu mnkgj.k lfgr nhft,A 2

Explain addition reaction with example.

(ii) csathu dh lajpuk cuk,¡A 1

Make a structure of Benzene.

105/(Set : A) P. T. O.

( 12 ) 105/(Set : A)
[k.M – l

SECTION – C

¼tho foKku½

(LIFE SCIENCE)

18. dkSu-lh xzfUFk balqfyu òkfor djrh gS \ 1

(A) ;Ñr

(B) vf/ko`Dd

(C) fiuh;y
(D) vXU;k'k;

Which gland secrete Insulin ?

(A)` Liver

(B) Adrenal

(C) Pineal

(D) Pancreas

105/(Set : A)

( 13 ) 105/(Set : A)
19. cgq[kaMu fdlesa gksrk gS \ 1

(A) vehck
(B) iSjkehf'k;e
(C) ysLekfu;k
(D) IySTeksfM;e

Multiple fission take place in :

(A)` Amoeba

(B) Paramecium

(C) Leishmania

(D) Plasmodium

20. dkSu-lk çkÑfrd ikfjra= gS \ 1
(A) cxhpk

(B) [ksr
(C) (A) vkSj (B) nksuksa
(D) rkykc
Which is a natural ecosystem ?

(A)` Garden

(B) Crop fields

(C) Both (A) and (B)

(D) Pond

105/(Set : A) P. T. O.

( 14 ) 105/(Set : A)
21. CFCs dks foLrkfjr dhft,A 1

Write full form of CFCs.

22. dkSu-lh lajpuk es:jTtq dks jf{kr djrh gS \ 1

Which structure protects spinal cord ?

23. dsaæh; raf=dk ra= ds fofHkUu Hkkx dkSu-ls gSa \ buds dk;Z fyf[k,A 2

What are the various parts of central nervous system ? Write their functions.

24. jkbtksil esa chtk.kq lekla?k ds ckjs esa fyf[k,A 2

Write about spore formation in Rhizopus.

25. iq"i ds eknk tuukax dh lajpuk dk o.kZu dhft,A 2
Discuss the structure of female reproductive part of a flower.

26. esaMy ds ç;ksxksa ls dSls irk pyk fd fofHkUu y{k.k Lora= :i ls oa'kkuqxr gksrs gSa \ 4

How do Mendel's experiment show that traits are inherited independently ?

27. ekuo mRltZu ra= dh lajpuk dk ukekafdr fp= dh lgk;rk ls o.kZu dhft,A 6

Explain the structure of human excretory system with the help of a well labelled
diagram.

105/(Set : A)

( 15 ) 105/(Set : A)
vFkok

OR

ltho viuk Hkkstu fdl çdkj çkIr djrs gSa \ fofHkUu ;qfDr;k¡ fyf[k,A 6

How do living things get their food ? Write various strategies.

S

105/(Set : A) P. T. O.