Rajasthan Board Class 10 Question Paper 2025 Science

RAJASTHAN BOARD

QUESTION
PAPER
2025

ANNUAL EXAMINATION

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Zm_m§H$ Roll No. Question Booklet No.

No. of Questions – 20 S-07-Science
No. of Printed Pages – 15

_mÜ`{_H$ narjm, 2025
Secondary examination, 2025

{dkmZ
Science
g_` : 3 KÊQ>o 15 {_ZQ>
nyUmªH$ : 80
narjm{W©`m| Ho$ {bE gm_mÝ` {ZX}e :
General Instructions to the examinees :
1) narjmWu gd©àW_ AnZo àíZ-nÌ na Zm_m§H$ A{Zdm`©V: {bI| &
Candidate must write first his/her Roll No. on the question paper compulsorily.
2) g^r àíZ hb H$aZo A{Zdm`© h¢ &
All the questions are compulsory.
3) àË`oH$ àíZ H$m CÎma Xr JB© CÎma-nwpñVH$m _| hr {bI| &
Write the answer to each question in the given answer-book only.
4) {OZ àíZm| _| AmÝV[aH$ IÊS> h¢, CZ g^r Ho$ CÎma EH$ gmW hr {bI| &
For questions having more than one part, the answers to those parts are to be
written together in continuity.
5) àíZ-nÌ Ho$ {hÝXr d A§J«oOr ê$nm§Va _| {H$gr àH$ma H$s Ìw{Q>/A§Va/{damoYm^mg hmoZo na {hÝXr
^mfm Ho$ àíZ H$mo ghr _mZ| &
If there is any error/difference/contradiction in Hindi and English versions of the
question paper, the question of Hindi version should be treated valid.
6) àíZ H«$_m§H$ 14 go 20 _| AmÝV[aH$ {dH$ën h¢ &
There are internal choices in Q. No. 14 to 20.
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IÊS> - A
SECTION – A

1.
~hþ{dH$ënr àíZ :
{ZåZ àíZm| Ho$ CÎma H$m ghr {dH$ën M`Z H$a CÎma-nwpñVH$m _| {b{IE &
Multiple Choice Questions :
Write the correct option of answer of the following questions in the answer-book.

i) H$m¡Z-gr A§V:òmdr J«§{W eara H$s d¥{Õ Ho$ {bE CnmnM` H$m {Z`_Z H$aVr h¡ ? [1]
A) WmB_g J«§{W ~) Wm`am°BS> J«§{W
g) ES´>rZb J«§{W X) A½Ý`me`
Which endocrine gland regulates metabolism for body growth ?
A) Thymus gland B) Thyroid gland
C) Adrenal gland D) Pancreas

ii) H$m¡Z-go Ord _|, nwZéØdZ (nwZO©ZZ) Ûmam ZE Ord H$s CËn{Îm hmo gH$Vr h¡ ? [1]
A) ßboZo[a`m ~) boñ_m{Z`m
g) ßb¡µÁ_mo{S>`_ X) Ho$MwAm
In which organism, new organisms can be produced by regeneration ?
A) Planaria B) Leishmania
C) Plasmodium D) Earthworm

iii) _mZd _| d¥ŠH$ EH$ V§Ì H$m ^mJ h¡, Omo g§~§{YV h¡ - [1]
A) nmofU go ~) ídgZ go
g) CËgO©Z go X) n[adhZ go
The kidney in human beings is the part of the system for –
A) Nutrition B) Respiration
C) Excretion D) Circulation

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iv) {ZåZ{b{IV _| go H$m¡Z-gm nmXn hm°_m}Z H$m CXmhaU h¡ ? [1]
A) B§gw{bZ ~) Wm°`ampŠgZ
g) EñQ´>moOZ X) gmBQ>moH$mB{ZZ
Which of the following is an example of plant hormone ?
A) Insulin B) Thyroxin
C) Estrogen D) Cytokinin

v) EH$ g§H$a g§H$aU _| F2 nr‹T>r H$m OrZ àmê$n AZwnmV hmoVm h¡ - [1]
A) 1 : 2 : 1 ~) 1 : 3
g) 2 : 1 X) 9 : 3 : 3 : 1
Genotype ratio in F2 generation of a monohybrid cross is –
A) 1 : 2 : 1 B) 1 : 3
C) 2 : 1 D) 9 : 3 : 3 : 1

vi) {ZåZ{b{IV _| go H$m¡Z gm¡a D$Om© H$m pñWarH$aU H$aHo$ Cgo {df_nmo{f`m| Ho$ {bE
CnbãY H$admVo h¢ ? [1]
A) àmW{_H$ Cn^moŠVm
~) {ÛVr` Cn^moŠVm
g) V¥Vr` Cn^moŠVm
X) CËnmXH$
Which of the following fix up the solar energy and make it available for
heterotrophs ?
A) Primary consumers
B) Secondary consumers
C) Tertiary consumers
D) Producers

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vii) Jmobr` Xn©U H$s dH«$Vm {ÌÁ`m R Ed§ \$moH$g Xÿar f _| gå~ÝY h¡ - [1]

A) R = f ~) R = f g) R = 2f X) R = 4f
2
The relation between radius of curvature R and focal length f of a spherical
mirror is –
f
A) R = B) R = f C) R = 2f D) R = 4f
2
viii) ídoV àH$me nw§O, {àÁ_ go JwOaZo Ho$ níMmV² BgHo$ Ad`dr dUm] _| {djo{nV hmo OmVm
h¡ & àH$me Omo g~go H$_ PwH$Vm ({dM{bV) hmoVm h¡, dh h¡ - [1]

A) bmb ~) ~¢JZr g) nrbm X) ham
A beam of white light passing through a prism is split up into its constituent
colours. The light which undergoes least deviation is –

A) Red B) Violet C) Yellow D) Green

ix) {XE JE n[anW {MÌ _| {~§Xþ P Ed§ Q Ho$ _Ü` Vwë` à{VamoY h¡ - [1]


A) 1Ω ~) 2Ω g) 4Ω X) 8Ω
The equivalent resistance between point P and Q in given circuit is –


A) 1Ω B) 2Ω C) 4Ω D) 8Ω
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x) {ZåZ{b{IV _| go g~go AÀN>m {dÚwV H$m MmbH$ h¡ - [1]
A) bmohm ~) Eë`y_r{Z`_ g) Vmå~m X) Mm±Xr
Which of the following is best conductor of electricity ?
A) Iron B) Aluminium C) Copper D) Silver
xi) X{jU hñV A§JwîR> {Z`_ _| A±JyR>m g§Ho$V H$aVm h¡ - [1]
A) {dÚwV Ymam H$s {Xem
~) Mwå~H$s` joÌ H$s {Xem
g) n¥Ïdr Ho$ Mwå~H$s` joÌ H$s {Xem
X) ~b H$s {Xem
In the right hand thumb rule, the thumb points towards the –
A) Direction of current
B) Direction of magnetic field
C) Direction of earth’s magnetic field
D) Direction of force
xii) {MÌmZwgma Mwå~H$s` joÌ Ho$ bå~dV aIo MmbH$ _| {dÚwV Ymam àdm{hV hmo ahr h¡ &
MmbH$ na Amamo{nV ~b H$s {Xem h¡ - [1]
Ymam i

Mwå~H$s` joÌ B

A) ~m`t Amoa ~) Xm`t Amoa
g) H$mJO go ~mha H$s Amoa AmVo hþE X) H$mJO _| ^rVa H$s Amoa OmVo hþE
According to given diagram current is flowing in a conductor placed
perpendicular to a magnetic field. The direction of force acting on the
conductor is
Current i

Magnetic field B

A) to the left B) to the right
C) out of the page D) into the page
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xiii) qOH$ Am¡a VZw gëâ`y[aH$ Aåb Ho$ _Ü` A{^{H«$`m go CËnÞ J¡g h¡ - [1]
A) H2 ~) O2
g) CO2 X) SO2
The gas evolved on the reaction between zinc and dilute sulphuric acid is –
A) H2 B) O2
C) CO2 D) SO2

xiv) EH$ CXmgrZ {db`Z H$m pH _mZ h¡ - [1]
A) 1.2 ~) 7 g) 7.4 X) 10
pH value of a neutral solution is –
A) 1.2 B) 7 C) 7.4 D) 10
xv) A{^{H«$`m : 2PbO(s) + C(s) → 2Pb(s) + CO2(g) [1]

H$WZ : i) grgm CnM{`V hmo ahm h¡ &
ii) H$m~©Z S>mBAm°ŠgmBS> CnM{`V hmo ahm h¡ &
iii) H$m~©Z CnM{`V hmo ahm h¡ &
iv) boS> Am°ŠgmBS> AnM{`V hmo ahm h¡ &
CnamoŠV A{^{H«$`m Ho$ {bE gË` H$WZ h¡ -
A) i) Am¡a ii) ~) Ho$db i)
g) Ho$db ii) X) iii) Am¡a iv)
Reaction : 2PbO(s) + C(s) → 2Pb(s) + CO2(g)
Statements : i) Lead is getting oxidised.
ii) Carbon dioxide is getting oxidised.
iii) Carbon is getting oxidised.
iv) Lead oxide is getting reduced.
True statement for above reaction is –
A) i) and ii) B) Only i)
C) Only ii) D) iii) and iv)
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xvi) \$m°ñ\$moag na_mUw Ho$ M H$moe _| CnpñWV BboŠQ´>m°Zm| H$s g§»`m h¡ - [1]
A) 3 ~) 5
g) 6 X) 7
Number of electrons present in M shell of phosphorous atom is –
A) 3 B) 5
C) 6 D) 7

xvii) g§V¥ßV hmBS´>moH$m~©Z h¡ - [1]
A) C2H2 ~) C2H4
g) C2H6 X) C6H6
Saturated hydrocarbon is –
A) C2H2 B) C2H4
C) C2H6 D) C6H6

xviii) _oWoZ (CH4) _| CnpñWV ghg§`moOH$ Am~§Ym| H$s g§»`m h¡ - [1]
A) 4 ~) 7
g) 10 X) 13
Number of covalent bonds present in methane (CH4) is –
A) 4 B) 7
C) 10 D) 13

2. [aŠV ñWmZm| H$s ny{V© H$s{OE :
Fill in the blanks :
i) hm°_m}Z H$s {H«$`m H$mo _______ {H«$`m{d{Y {Z`§{ÌV H$aVr h¡ & [1]
A _______ mechanism regulates the action of a hormone.

ii) emImpÝdV Amhma ûm¥§IbmAm| go ~Zm Omb "_______' H$hbmVm h¡ & [1]
The web made by the branching food chains is called ‘_______’.
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iii) gm_mÝ`V`m {dÚwV Vma Vmå~o Ho$ ~ZmE OmVo h¢ Š`m|{H$ _______ & [1]
Electric wires are usually made of copper because _______.

iv) {dÚwV Ymamdmhr d¥ÎmmH$ma nme Ho$ H$maU CËnÞ Mwå~H$s` joÌ H$s à~bVm, \o$am| H$s
g§»`m _| d¥{Õ H$aZo go ________ & [1]
By increasing the number of turns of wire in the coil, the strength of
magnetic field produced by a current carrying circular coil is ________.

v) _¡¾r{e`_ [a~Z H$m dm`w _| XhZ H$aZo na ~Zo `m¡{JH$ H$m Zm_ ________ h¡ & [1]
The name of compound obtained on burning of magnesium ribbon in air is
_________.

vi) gmoZo Am¡a bmoho _| go ______ A{YH$ VÝ` YmVw h¡ & [1]
______ is more ductile metal between gold and iron.

3. A{V bKyÎmamË_H$ àíZ : (àíZm| H$m CÎma EH$ eãX `m EH$ n§pŠV _| {b{IE &)
Very Short Questions : (Answer the question in one word or in one line.)

i) ídgZ H$mo n[a^m{fV H$s{OE & [1]

Define respiration.

ii) _pñVîH$ H$m H$m¡Z-gm ^mJ grYr aoIm _| MbZm, gmB©{H$b MbmZm d n|{gb CR>mZo H$mo
{Z`§ÌU H$aVm h¡ ? [1]

Which part of the brain controls walking in straight line, riding bicycle and
picking up a pencil ?

iii) C^`qbJr nwîn H$m H$moB© EH$ CXmhaU {b{IE & [1]
Write any one example of bisexual flower.

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iv) _|S>b Ho$ à`moJ _| _Q>a Ho$ g\o$X \y$b H$m {dn`m©gr bjU Š`m Wm ? [1]

In the Mendel’s experiment what was the contrasting character for white

flower of pea ?

v) {H$gr dmhZ Ho$ níM-Ñí` (wing) Ho$ {bE {H$g Xn©U H$m Cn`moJ {H$`m OmVm h¡ ? [1]

Which mirror is used as rear-view (wing) of a vehicle ?

vi) {ZH$Q> ÑpîQ> Xmof go Amn Š`m g_PVo h¢ ? [1]

What do you understand by myopia (near-sightness) ?

vii) n[anW _| {d^dmÝVa H$m _mnZ {H$g `§Ì go H$aVo h¢ ? [1]

The potential difference is measured by which instrument in circuit ?

viii) {H$gr {dÚwV Ymamdmhr n[aZm{bH$m Ho$ H$maU CËnÞ Mwå~H$s` joÌ H$s joÌ aoImAm| H$mo

Xem©B`o & [1]

Draw the field lines of a magnetic field produced due to a current carrying

solenoid.

ix) CaO + H2O → [x] + D$î_m [1]

CnamoŠV A{^{H«$`m _| [x] H$m amgm`{ZH$ Zm_ {b{IE &

CaO + H2O → [x] + Heat

Write chemical name of [x] in above reaction.

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x) ~rH$a H$mo {M{ÌV H$s{OE & [1]
Draw beaker.

xi) H$m~m}pŠg{bH$ Aåb _| CnpñWV àH$m`m©Ë_H$ g_yh H$m gyÌ {b{IE & [1]
Write formula of functional group present in carboxylic acid.

xii) Aåb Ho$ Obr` {db`Z H$mo {dÚwV n[anW _| bJmZo na n[anW _| bJm ~ë~ ObZo
bJVm h¡ & Bg àojU H$m {díbofU H$aHo$ EH$ {dÚmWu Zo Aåb Ho$ Obr` {db`Z Ho$
H$m¡Z-go JwU H$mo {gÕ {H$`m ? {b{IE & [1]

When the aqueous solution of acid is put in electric circuit, the bulb
connected in circuit starts glowing. Write which property of an aqueous
solution of an acid did a student prove by analyzing this observation.

IÊS> - ~
SECTION – B

bKyÎmamË_H$ àíZ :
Short Answer Questions :

4. dm`dr` VWm Adm`dr` ídgZ _| A§Va {b{IE & [2]
Write difference between aerobic and anaerobic respiration.

5. nmXnm| _| àH$memZwdV©Z J{V`m| H$mo g_PmBE & [2]
Explain phototrophic movements in plants.

6. _mZd Ho$ Za OZZ V§Ì _| nmE OmZo dmbo Xmo A§Jm| Ho$ H$m`© g_PmBE & [1+1=2]
Explain functions of two organs found in male reproductive system of human
beings.
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7. _mZd _| qbJ {ZYm©aU H$m AmaoI {MÌ ~ZmBE & [2]

Draw a line diagram of sex determination in human beings.

8. AndV©Zm§H$ {H$go H$hVo h¢ ? BgH$m gyÌ {b{IE & [1+1=2]

What is refractive index ? Write its formula.

9. ñdÀN> AmH$me H$m a§J Zrbm Š`m| hmoVm h¡ ? [2]

Why is the colour of the clear sky is blue ?

10. Kaoby {dÚwV n[anWm| _| {dÚwV â`yO H$m Cn`moJ Š`m| {H$`m OmVm h¡ ? [2]

Why an electric fuse is used in domestic electric circuits ?

11. b¡S> ZmBQ´>oQ> Ho$ VmnZ go ZmBQ´>moOZ S>mBAm°ŠgmBS> J¡g Ho$ CËgO©Z H$mo àX{e©V H$aZo Ho$ {bE
ì`dpñWV CnH$aU H$mo {M{ÌV H$s{OE & [2]

Draw the systematic equipment for showing the emission of nitrogen dioxide gas
on heating lead nitrate.

12. 2NaOH(aq) + Zn(s) Na2ZnO2(s) + [x] [2]
CnamoŠV A{^{H«$`m _| [x] H$m Zm_ d gyÌ {b{IE &
2NaOH(aq) + Zn(s) Na2ZnO2(s) + [x]
Write the name and formula of [x] in above reaction.

13. `{X H$m°na AmЩ H$m~©Z S>mBAm°ŠgmBS> _| n‹S>m ahVm h¡ Vmo BgH$s gVh na Š`m à^md n‹S>Jo m ?
dU©Z H$s{OE & [2]

If copper is kept in moist carbon dioxide then what effect will happen on its surface ?
Describe.

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IÊS> - g
SECTION – C

XrK© CÎmamË_H$ àíZ :
Long Answer Questions :

14. F$Vwòmd (aOmoY_©) hmoZo H$m H$maU g_PmBE VWm BgH$s Ad{Y {b{IE & [2+1=3]
Explain the reason of menstruation and write its duration.
AWdm/OR
J^©{ZamoYH$ `wpŠV`m± AnZmZo Ho$ H$maUm| H$mo g_PmBE VWm H$moB© EH$ J^©{ZamoYH$ `wpŠV H$m
Zm_ {b{IE & [2+1=3]
Explain reason for adopting contraceptive devices and write the name of any one
contraceptive device.

15. dm`w_§S>b Ho$ CÀMVa ñVa na AmoOmoZ ~ZZo H$s {H«$`m H$mo g_rH$aU Ûmam g_PmBE & [1+2=3]
Explain the process of formation of ozone by an equation, at higher levels of the
atmosphere.
AWdm/OR
dm`w_§S>b _| AmoOmoZ H$s _mÌm _| {JamdQ> H$m EH$ _w»` H$maH$ {H$g agm`Z H$mo _mZm J`m h¡,
d BgH$s amoH$Wm_ Ho$ {bE Š`m H$X_ CR>m`m J`m Wm ? [1+2=3]
Which chemical is considered to be a major cause for depletion of ozone in the
atmosphere, what step was taken to prevent this ?

16. Amo_ H$m {Z`_ {b{IE & à{VamoY H$mo n[a^m{fV H$a BgHo$ S.I. _mÌH$ H$mo {b{IE & ZmBH«$mo_
Vma Ho$ {bE {d^dmÝVa Ed§ Ymam Ho$ _Ü` J«m\$ It{ME & [1+1+1=3]
What is Ohm’s law ? Define the resistance and write its S.I. unit. Plot the graph
between potential difference and current for a nichrome wire.
AWdm/OR
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{dÚwV Ymam H$m Vmnr` à^md Š`m h¡ ? {H$gr à{VamoYH$ _| CËnÝZ hmoZo dmbr D$î_m {H$Z H$maH$m|
na {Z^©a H$aVr h¡ ? Amo_ Ho$ {Z`_ Ho$ AÜ``Z Ho$ {bE n[anW {MÌ ~ZmB`o & [1+1+1=3]

What is heating effect of electric current ? On which factors the heat produced in
a resistor depends ? Draw a circuit diagram for studying the Ohm’s law.

17. Šbmoa-jma à{H«$`m H$mo g_PmBE Am¡a Bg_| {Z{hV amgm`{ZH$ g_rH$aU {b{IE & [2+1=3]
Explain chlor-alkali process and write chemical equation involved in it.

AWdm/OR

~oqH$J gmoS>m na D$î_m Ho$ à^md H$mo g_PmBE Am¡a Bg_| {Z{hV amgm`{ZH$ g_rH$aU
{b{IE & [2+1=3]
Explain the effect of heat on baking soda and write chemical reaction
involved in it.

IÊS> - X
SECTION – D

{Z~§YmË_H$ àíZ :
Essay Type Questions :

18. i) A_r~m _| nmofU H$s {d{Y H$mo g_PmBE &
ii) A½Ý`me` Ûmam òm{dV àmoQ>rZ nmMH$ E§OmB_ H$m Zm_ {b{IE &
iii) jwÐm§V _| nm`o OmZo dmbo XrK©amo_m| H$m H$m`© ñnîQ> H$s{OE & [1+1+2=4]

i) Explain mode of nutrition in Amoeba.
ii) Write the name of protein digestive enzyme secreted by pancreas.
iii) Explain function of villi found in the small intestine.
AWdm/OR
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i) n¡am_r{e`_ _| nmofU H$s {d{Y H$mo g_PmBE &

ii) _mZd _| OR>aJ«§{W Ûmam òm{dV àmoQ>rZ nmMH$ E§OmB_ H$m Zm_ {b{IE &

iii) ~mK H$s jwÐm§V H$s bå~mB© H$_ Š`m| hmoVr h¡ ? H$maU ñnîQ> H$s{OE & [1+1+2=4]

i) Explain mode of nutrition in Paramecium.

ii) Write name of protein digestive enzyme secreted by gastric gland in human
beings.

iii) Why does length of small intestine of Tiger is short ? Explain its reason.

19. i) {H$gr q~~ H$mo 16 go_r \$moH$g Xÿar Ho$ AdVb Xn©U go 24 go_r H$s Xÿar na aIm h¡ &
Xn©U go {H$VZr Xÿar na naXo H$mo aIm OmE {H$ ñnîQ> à{V{~§~ àmßV hmo ?
An object is placed at 24 cm in front of a concave mirror of focal length
16 cm. At what distance from the mirror should a screen be placed in order
to obtain a sharp image ?

ii) AdVb Xn©U Ho$ gm_Zo CgHo$ Y«wd Ed§ _w»` \$moH$g Ho$ _Ü` pñWV {~§~ Ho$ à{V{~§~
H$m {H$aU AmaoI ~ZmB`o & [2+2=4]
Draw a ray diagram for the image formation when an object is placed
between pole and principal focus of a concave mirror.

AWdm/OR
i) EH$ ‹S>m°ŠQ>a + 2.0 D j_Vm H$m g§emoYH$ boÝg {ZYm©[aV H$aVm h¡ & b|g H$s \$moH$g
Xÿar Ed§ àH¥${V kmV H$s{OE &
A doctor has prescribed a corrective lens of power + 2.0 D. Find the focal
length and nature of the lens.

ii) CÎmb boÝg H$s ghm`Vm go à{V{~§~ H$m {H$aU AmaoI ~ZmB`o O~ q~~ F1 VWm 2F1
Ho$ _Ü` pñWV h¡ & [2+2=4]
Draw a ray diagram for the image formation when object is placed between
F1 and 2F1 of a convex lens.

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20. {_gob H$s g§aMZm XoVo hþE gm~wZ Am¡a An_mO©H$ H$s g\$mB© {H«$`m H$m {díbofU H$s{OE & [2+2=4]
Analyse the cleaning action of soap and detergent by giving structure of
micelles.
AWdm/OR
{Z{hV amgm`{ZH$ g_rH$aU XoH$a EWoZmoBH$ Aåb H$s {ZåZ{b{IV A{^{H«$`mAm| H$m {díbofU
H$s{OE &
i) EñVarH$aU A{^{H«$`m

ii) jmaH$ Ho$ gmW A{^{H«$`m & [2+2=4]
Analyse the following reactions of ethanoic acid by giving chemical equations
involved.
i) Esterification reaction
ii) Reaction with alkali.

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