Rajasthan Board Class 10 Question Paper 2023 Science

Rajasthan Board

QUESTION
PAPER

Zm_m§H$ Roll No.

Tear Here
Sl.No. :

No. of Questions – 23 S–07–Science
No. of Printed Pages – 15

_mÜ`{_H$ narjm, 2023
SECONDARY EXAMINATION, 2023
{dkmZ

TEAR HERE TO OPEN THE QUESTION PAPER
SCIENCE
g_` : 3 KÊQ>o 15 {‘{ZQ>
nyUmªH$ : 80

àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$m‹S>|
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| Ho$ 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$mo ghr _mZ|&
If there is any error / difference / contradiction in Hindi & English versions
of the question paper, the question of Hindi version should be treated
valid.
`hm± go H$m{Q>E

6) àíZ H«$_m§H$ 21 go 23 ‘| AmÝV[aH$ {dH$ën h¢&
There are internal choice in Q. No. 21 to 23.

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IÊS> - A
SECTION - A

~hþ{dH$ënr àíZ:

1) {ZåZàíZm| Ho$ CÎma H$m ghr {dH$ën M¶Z H$a CÎmanwpñVH$m ‘| {b{IE -

Multiple Choice Question -

Write the correct option of answers of the following questions in the answer
book-

i) d¥{Õ H$m g§X_Z H$aZo dmbo hm°_m}Z H$m CXmhaU h¡ - [1]

(A) {Oã~oao{bZ (~) gmBQ>moH$mB{ZZ

(g) Epãg{gH$ Aåb (X) B§g{w bZ

Example of hormone which inhibits growth is -

(A) Gibberelin (B) Cytokinin

(C) Abscisic acid (D) Insulin

ii) _pñVîH$ H$m H$m¡Zgm ^mJ eara H$s g§pñW{V Ed§ g§VwbZ Ho$ {bE CÎmaXm`r h¡? [1]

(A) à_pñVîH$ (~) AJ«_pñVîH$

(g) AZw_pñVîH$ (X) _Ü`_pñVîH$

Which part of brain is responsible for maintaining the posture and balance
of body?

(A) Cerebrum (B) Fore - brain

(C) Cerebellum (D) Mid-brain

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iii) RrYy OrZr g§aMZm H$m ~mø bjU hmoJm - [1]

(A) Jmob, ham

(~) PwauXma, nrbm

(g) Jmob, nrbm

(X) PwauXma, ham

External feature of genotype RrYy will be-

(A) Round, Green

(B) Wrinkled, Yellow

(C) Round, Yellow

(D) Wrinkled, Green

iv) D$Om© Ho$ ZdrH$aUr` ómoV H$m CXmhaU h¡& [1]

(A) ndZ D$Om©

(~) noQ´>mob

(g) H$mo`bm

(X) bH$‹S>r

Example of renewable source of energy is

(A) Wind energy

(B) Petrol

(C) Coal

(D) Wood

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v) amOñWmZ _| Ob g§J«hU H$s nwamZr g§H$ënZm h¡ - [1]
(A) Im{XZ (~) ~§{Yg
(g) ~§Ymag (X) Hw$ëh
The old concept of water harvesting in Rajasthan is -
(A) Khadin (B) Bundhis
(C) Bandharas (D) Kulh

vi) {XE JE {MÌ _|, H$moU (x) H$m _mZ hmoJm … [1]

A{^bå~

Amn{VV {H$aU namd{V©V {H$aU
30º x

(A) 60º (~) 90º
(g) 45º (X) 30º
In the given figure, the value of angle (x) will be :

Normal

Incident ray Reflected ray
30º x

(A) 60º (B) 90º
(C) 45º (D) 30º

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vii) n[aVm[aH$m H$s no{e`m± {Z`§{ÌV H$aVr h¡& [1]
(A) àH$me Zm{‹S>`m± (~) ZoÌ b|g H$s \$moH$g Xÿar
(g) nwVbr H$m AmH$ma (gmBµO) (X) {H«$ñQ>br` b|g H$s AmH¥${V
The muscles of the iris controls
(A) Optic nerves (B) Focal length of the eye lens
(C) Size of pupil (D) Shape of crystalline lens

viii) kwh {H$g ^m¡{VH$ am{e H$m _mÌH$ h¡? [1]
(A) e{ŠV (~) {dÚwV D$Om©
(g) g§dJo (X) ~b
Which physical quantity has kwh as its unit?
(A) power (B) electric energy
(C) momentum (D) force

ix) Amo_ Ho$ {Z`_ go g§~§{YV {XE JE {dÚwV n[anW _| `w{ŠV (y) H$mo nhMm{Z`o& [1]
+ –

+
_y –
+
_–
(A) dmoëQ>_rQ>a (~) Hw§$Or
(g) {dÚwV gob (X) A_rQ>a
Identify the device (y) in the given electric circuit related to ohm's law
+ –

+
_y –
+
_–
(A) voltmeter (B) key
(C) electric cell (D) ammeter
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x) dmVmdaU _| Mm±Xr Ho$ D$na H$mbr naV M‹T>Zo H$s à{H«$`m h¡ - [1]
(A) AnM`Z (~) g§jmaU
(g) {dH¥$VJ§{YVm (X) {Û{dñWmnZ
The process of black coating on silver in environment is -
(A) Reduction (B) Corrosion
(C) Rancidity (D) Double displacement

xi) Al, Fe VWm Zn H$s A{^{H«$`merbVm H$m ghr ~‹T>Vm H«$_ h¡ - [1]
(A) Fe < Zn < Al (~) Fe < Al < Zn
(g) Al < Fe < Zn (X) Al < Zn < Fe
The correct ascending order of reactivity of Al, Fe and Zn is -
(A) Fe < Zn < Al (B) Fe < Al < Zn
(C) Al < Fe < Zn (D) Al < Zn < Fe

xii) CH3COOH+CH3-CH2OH 

Aåb
 [A] + H2O CnamoŠV A{^{H«$`m _| `m¡{JH$ [A] h¡ -
[1]
(A) CH 3–CH 2–O–CH 2–CH 3
(~) CH 3–CH 2–COOCH 3
(g) H–C–O–CH 2–CH 2–CH 3
O
(X) CH 3–C–O–CH 2–CH 3
O
CH3COOH+CH3-CH2OH 
Acid
 [A] + H2O Compound [A] in above
reaction is -
(A) CH 3–CH 2–O–CH 2–CH 3
(B) CH 3–CH 2–COOCH 3
(C) H–C–O–CH 2–CH 2–CH 3
O
(D) CH 3–C–O–CH 2–CH 3
O
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2) [aº$ ñWmZm| H$s ny{V© H$s{OE -

Fill in the blank places -

i) bma _| ^r EH$ B§µOmB_ hmoVm h¡ {Ogo bmar` ................ H$hVo h¢& [1]

The saliva contains an enzyme called salivary __________.

ii) H$m{`H$ àdY©Z H$m bm^ `h h¡ {H$ Bg àH$ma CËnÞ g^r nm¡Yo AmZwdm§{eH$ ê$n go OZH$ nm¡Yo Ho$
........... hmoVo h¢& [1]

Advantage of vegetative propagation is that all plants produced by this are
genetically _________ to the parent plant.

iii) nXmW© Omo O¡{dH$ àH«$_ Ûmam AnK{Q>V hmo OmVo h¢, "...............' H$hbmVo h¢& [1]

Substances that are decomposed by biological processes are called
'__________'.

iv) Mw§~H$ Ho$ gOmVr` Y«wdm| _| nañna .............. hmoVm h¡& [1]

Like poles of magnet ________ with each other.

v) {gaH$m _| CnpñWV Aåb H$m amgm`{ZH$ Zm_ ................ h¡& [1]

Chemical name of acid present in vinegar is __________.

vi) AmYw{ZH$ AmdV© gmaUr Vrgao AmdV© _| CnpñWV VËdm| H$s g§»`m .............. h¡& [1]

Number of elements present in third period of modern periodic table are
_________.

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3) A{VbKwÎmamË‘H$ àíZ (àíZm| H$m CÎma EH$ eãX ¶m EH$ n§{³V ‘| {b{IE&)
Very short answer type question (Answer the question in one word or in one
line.)

i) hm°_m}Z H$s {H«$`m H$mo H$m¡Zgr {H«$`m{d{Y {Z`§{ÌV H$aVr h¡? [1]

Which mechanism regulates the action of a hormone?

ii) ~hþI§S>Z àX{e©V H$aZo dmbo EH$ Ord H$m Zm_ {b{IE& [1]

Write name of an organism that exhibits multiple fission.

iii) Ordmí_r B©YZ Ho$ Cn`moJ go hmoZo dmbr EH$ hm{Z {b{IE& [1]

Write one disadvantage of using fossil fuels.

iv) nm[aV§Ì Ho$ AO¡dKQ>H$ H$m EH$ CXmhaU Xr{OE& [1]

Give one example of abiotic component of ecosystem.

v) Xmo ^m¡{VH$ am{e`m| P = 5Ω Ed§ Q = 8 × 10–4 Ω × m Ho$ MmbH$mo H$s bå~mB© AmYr H$aZo
na P d Q Ho$ g§JV _mZ {b{IE& [1]

Write the corresponding values of two physical quantities P and Q for
which the length of conductor P = 5Ω and Q = 8 × 10–4 Ω × m are reduced
to half.

vi) Xmo Mw§~H$s` joÌ aoImE± EH$ - Xÿgao H$mo à{VÀN>oX Š`m| Zht H$aVr? [1]

Why two magnetic field lines do not intersect to each other?

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vii) {H$gr {dÚwV Ymamdmhr n[aZm{bH$m Ho$ ^rVa Ed§ CgHo$ Mmam| M§w~H$s` joÌ aoImAm| H$mo àX{e©V H$aZo Ho$
{bE {MÌ ~ZmBE& [1]

Draw diagram to show lines of magnetic field inside and around a current
carrying solenoid.

viii) CXmgrZrH$aU A{^{H«$`m H$mo n[a^m{fV H$s{OE& [1]

Define neutralisation reaction.

ix) AmYw{ZH$ AmdV© {Z`_ {b{IE& [1]

Write modern periodic law.

x) CuO + H2 ¾¾
VmnZ
 Cu + H2O
CnamoŠV A{^{H«$`m _| AnM{`V hmoZo dmbo A{^H$maH$ H$m Zm_ {b{IE& [1]
CuO + H2 ¾¾
Heat
¾  Cu + H2O
Write the name of reactant reduced in above reaction.

xi) Am`moS>rZ, hram VWm gmo{S>`_ _| go g~go H$R>moa nXmW© H$m Zm_ {b{IE& [1]

Write name of hardest substance among iodine, diamond and sodium.

xii) _rWoZ H$s BboŠQ´>m°Z q~Xþ g§aMZm H$mo {M{ÌV H$s{OE& [1]

Draw electron dot structure of methane.

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IÊS> - ~
SECTION - B

bKwCÎmamË‘H$ àíZ-àíZ g§»¶m 04 go 16 Ho$ CÎma CÎmanwpñVH$m ‘§o {b{IE & (eãX gr‘m 50 eãX)
Short answer type question-Write the answers of question number 04 to 16 in
answer book (Word limit 50 words)

4) O¡d àH«$_ H$mo n[a^m{fV H$s{OE& [2]
Define life processes.

5) EH$qbJr nwîn H$mo n[a^m{fV H$s{OE VWm BgHo$ Xmo CXmhaU {b{IE& [1+½+½=2]
Define unisexual flower and write two examples of it.

6) d{V©H$mJ« na namJH$Um| Ho$ A§Hw$aU H$m Zm_m§{H$V {MÌ ~ZmBE& [2]
Draw a labelled diagram of the germination of pollengrains on the stigma.

7) n`m©daU Ho$ {d{^Þ KQ>H$m| Ho$ ~rM D$Om© Ho$ àdmh H$mo g_PmBE& [2]
Explain the flow of energy between various components of the environment.

8) i) b|g Ho$ AmdY©Z H$s n[a^mfm Xr{OE&
ii) dmhZmo Ho$ níM-Ñí` Xn©U Ho$ ê$n _| à`wŠV Jmobr` Xn©U H$m Zm_ {b{IE&
[1+1=2]
i) Define magnification of lens.
ii) Write name of spherical mirror used as rear-view mirror in vehicles.

9) i) {dÚwV {d^dmÝVa H$s n[a^mfm Xr{OE&
ii) Oyb Ho$ VmnZ {Z`_ na AmYm[aV {H$Ýht Xmo `w{ŠV`m| Ho$ Zm_ {b{IE&
[1+1=2]
i) Define electric potential difference.
ii) Write names of any two devices based on Joule's law of heating.

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10) loUr H«$_ _| Ow‹S>o VrZ à{VamoYH$mo Ho$ g§`moOZ Ho$ gyÌ H$mo ì`wËnÞ H$s{OE& [2]
Derive the formula for the combination of three resistors connected in series.

11) Kaobw {dÚwV n[anWm| _| gm_mÝ`V… {dÚwV gm{YÌm| (CnH$aUm|) H$mo g_mÝVa (nmíd©) g§`moOZ _| Š`m| OmoS>Vo h¡?
[2]
Why are the household electric circuits, the electric appliances (instruments)
connected in parallel combination?

12) i) âboq_J H$m dm_hñV (~m`m± hmW) {Z`_ {b{I`o&
ii) {dÚwV Mw§~H$s` àoaU H$mo n[a^m{fV H$s{OE&
[1+1=2]
i) Write Fleming's left-hand rule.
ii) Define electromagnetic induction.

13) ^O©Z VWm {ZñVmnZ H$mo n[a^m{fV H$s{OE& [1+1=2]
Define roasting and calcination.

14) {ZåZ{b{IV A{^H$_©H$m| Ho$ gmW EWoZm°b H$s amgm`{ZH$ A{^{H«$`mAm| Ho$ g§Vw{bV g_rH$aU {b{IE -
[1+1=2]
i) Na
ii) 443K Vmn_mZ na gm§Ð H2SO4
Write the balanced equations of chemical reactions of ethanol with following
reagents -
i) Na
ii) Concentrated H2SO4 at 443K temperature

15) gm~wZ H$s {_gob g§aMZm H$mo {M{ÌV H$s{OE& [2]
Draw the micelle structure of soap.

16) Ý`yb¢S²>g Ho$ Aï>H$ {gÕmÝV H$mo g_PmBE& [2]
Explain Newland's law of octaves.

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IÊS> - g
SECTION - C

XrK© CÎmamË‘H$ àíZ-àíZ g§»¶m 17 go 20 Ho$ CÎma CÎmanwpñVH$m ‘| {b{IE & (eãX gr‘m 100 eãX)
Long answer type question-Write the answers of question number 17 to 20 in
answer book (Word limit 100 words)

17) AÊS>me` go óm{dV hm°_m}Z H$m Zm_ VWm Xmo H$m`© {b{IE& [1+2=3]
Write the name and two functions of the hormone secreted by ovaries.

18) g_OmV Ed§ g_ê$n A§Jm| H$mo n[a^m{fV H$s{O`o& [1½+1½=3]
Define homologous and analogous organs.

19) i) Vmao {Q>_{Q>_mVo Š`mo àVrV hmoVo h¡? g_PmB`o&
ii) IVao Ho$ g§Ho$V ({g¾b) bmb a§J Ho$ Š`m| hmoVo h¡?
[2+1=3]
i) Why do stars seem to twinkle? Explain.
ii) Why are the danger signals red in colour?

20) {ZåZ{b{IV _| go àË`oH$ H$mo EH$ CXmhaU XoH$a g_PmBE - [1½+1½=3]
i) g§`moOZ A{^{H«$`m
ii) {d`moOZ A{^{H«$`m
Explain the following by giving one example of each -
i) Combination reaction
ii) Decomposition reaction

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IÊS> - X
SECTION - D

{Z~ÝYmË‘H$ àíZ-àíZ g§»¶m 21 go 23 Ho$ CÎma CÎmanwpñVH$m ‘| {b{IE (eãX gr‘m 250 eãX)
Essay type question-Write the answers of question number 21 to 23 in answer
book (Word limit 250 words)

21) i) dm`dr` ídgZ H$mo n[a^m{fV H$s{OE&
ii) _mZd ídgZ V§Ì Ho$ dm`y-_mJ© H$mo g_PmBE&
iii) _mZd ídgZ V§Ì H$m Zm_m§{H$V {MÌ ~ZmBE&

[1+2+1=4]

i) Define aerobic respiration.

ii) Explain air - passage of human respiratory system.

iii) Draw a labelled diagram of human respiratory system.

AWdm/OR
i) nmMZ H$mo n[a^m{fV H$s{OE&
ii) ^moOZ Ho$ nmMZ _| A½Ý`me{`H$ ag H$s ^y{_H$m H$mo g_PmBE&
iii) _mZd Ho$ nmMZ V§Ì (AmhmaZmb) H$s g§aMZm H$m Zm_m§{H$V {MÌ ~ZmBE&

[1+2+1=4]

i) Define digestion.

ii) Explain role of pancreatic juice in the digestion of food.

iii) Draw a labelled diagram of the structure of human alimentary canal.

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22) i) EH$ AdVb Xn©U go à{V{~å~ H$m ~ZZm Xem©Zo H$m {H$aU {MÌ ~ZmB`o O~{H$ EH$ {~å~ CgHo$ \$moH$g
(F) na pñWV hmo&
ii) `{X EH$ Jmobr` Xn©U H$s dH«$Vm {ÌÁ`m 14 cm h¡ Vmo BgH$s \$moH$g Xÿar kmV H$s{OE&
[2+2=4]
i) Draw ray diagram for image formation by concave mirror when the object
is placed at its focus (F).
ii) If the radius of curvature of a spherical mirror is 14 cm then find its focal
length.
AWdm/OR
i) EH$ CÎmb b|g go à{V{~å~ H$m ~ZZm Xem©Zo H$m {H$aU {MÌ ~ZmB`o, O~{H$ {~å~ F1 VWm 2F1 _Ü`
pñWV hmo&
ii) `{X EH$ b|g H$s j_Vm + 2.5 D h¡, Vmo CgH$s \$moH$g Xÿar kmV H$s{OE&
[2+2=4]
i) Draw ray diagram for image formation by convex lens when the object is
placed between F1 and 2F1.
ii) If the power of a lens is + 2.5 D, then find its focal length.

23) i) J§Yr` gyMH$ H$m H$moB© EH$ CXmhaU {b{IE&
ii) MyZo Ho$ nmZr _| H$m~©ZS>mBAm°ŠgmBS> J¡g H$mo àdm{hV H$aZo na `m¡{JH$ [A] H$m ídoV-Adjon ~ZVm h¡,
`{X Bg_| AË`{YH$ _mÌm _| H$m~©ZS>mBAm°ŠgmBS> J¡g H$mo àdm{hV {H$`m OmE Vmo EH$ Ob _| {dbo`erb
nXmW© [B] ~ZVm h¡ & [A] d [B] Ho$ amgm`{ZH$ gyÌ VWm {Z{hV amgm`{ZH$ A{^{H«$`mAm| Ho$ g_rH$aU
{b{IE&
[1+3=4]
i) Write any one example of olfactory indicator.
ii) White precipitate of compound [A] is formed on passing carbondioxide
gas in lime water, if excess quantity of the carbondioxide is passed in it
then a water soluble compound [B] is formed. Write chemical formulae of
[A] & [B] and equations of chemical reactions involved.

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AWdm/OR
i) ewÕ Ob H$m pH _mZ {b{IE&
ii) gmo{S>`_ H$m~m}ZoQ> Ho$ gmW hmBS´>moŠbmo[aH$ Aåb H$s A{^{H«$`m go `m¡{JH$ [A] ~ZVm h¡ & [A] H$mo
gmYmaU Z_H$ ^r H$hVo h¡ & [A] Ho$ Obr` {db`Z _| {dÚwV àdm{hV H$aZo na gmo{S>`_ hmBS´>m°ŠgmBS>
~ZVm h¡ & [A] H$m amgm`{ZH$ Zm_ VWm {Z{hV amgm`{ZH$ A{^{H«$`mAm| Ho$ g_rH$aU {b{IE&
[1+3=4]
i) Write pH value of pure water.
ii) Compound [A] is formed by the reaction of sodium carbonate with
hydrochloric acid. [A] is also called as common salt. Sodiumhydroxide is
formed on passing electricity in aqueous solution of [A]. Write chemical
name of [A] and equations of Chemical reactions involved.



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