Rajasthan Board Class 10 Question Paper 2019 Science

Zm_m§H$ Roll No.
Sl.No. :

Tear Here
No. of Questions – 30 S–07–Science
No. of Printed Pages – 11

_mÜ`{_H$ narjm, 2019
SECONDARY EXAMINATION, 2019
{dkmZ

TEAR HERE TO OPEN THE QUESTION PAPER
SCIENCE
g_` : 3¼ KÊQ>o

àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$m‹S>|
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| &
Candidates must write first his / her Roll No. on the question paper
compulsorily.

2) g^r àíZ 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| &
`hm± go H$m{Q>E

For questions having more than one part, the answers to those parts are to
be written together in continuity.

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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.

6) IÊS> àíZ g§»`m A§H$ àË`oH$ àíZ
A 1-11 1
~ 12-21 3
g 22-27 4
X 28-30 5
Section Q. Nos. Marks per
question
A 1-11 1
B 12-21 3
C 22-27 4
D 28-30 5
7) àíZ H«$_m§H$ 27 go 30 ‘| AmÝV[aH$ {dH$ën h¢ &
There are internal choices in Q. No. 27 to 30.

IÊS> - A

SECTION - A

1) H$m¡Zgo Xm±V ^moOZ H$mo MraZo-’$mS>Zo H$m H$m¶© H$aVo h¢? [1]

Which teeth are used in tearing and chopping of the food.

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2) a³V H$m {d{^Þ g‘yhm| ‘o§ dJuH$aU {H$gHo$ Ûmam {H$¶m J¶m ? [1]

Who classified the blood into different groups?

3) C.N.G. H$m nyam Zm‘ {b{IE & [1]

Write full form of C.N.G.

4) pñW{VO D$Om© H$s n[a^mfm {b{IE & [1]

Write definition of potential energy.

5) ZdrZ H$aUr¶ g§gmYZ H$m EH$ CXmhaU Xr{OE & [1]

Give one example of renewable resource.

6) H$m°’$s nmXn H$m d¡km{ZH$ Zm‘ {b{IE & [1]

Write scientific name of Coffee plant.

7) AmZwdm§{eH$ {d{dYVm H$mo n[a^m{fV H$s{OE & [1]

Define genetic diversity.

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8) ê${Ya ‘| {h‘mo½bmo{~Z H$m {Z‘m©U H$m¡Zgm VËd H$aVm h¡? $ [1]

Which element take part in formation of haemoglobin in blood.

9) H$m¡Zgr à{Vajr à˶wO©Vm ¶m EobOu {H«$¶mAm| ‘| {hñgm boVr h¡ ? $ [1]

Which antibody participates in allergic reactions?

10) 'A' d 'B' Ho$ A{V[aº$ bmb a³V H${UH$mAm| H$s gVh na H$m¡Zgm à{VOZ nm¶m OmVm h¢? $ [1]

Which antigen is found on the surface of the red blood corpuscles in addition to
'A' and 'B' ?

11) Amo‘ Ho$ {Z¶‘mZwgma {d^dmÝVa (V) VWm {dÚwV Ymam (I) Ho$ ~rM J«m’$ (AmaoI) ~ZmB¶o & [1]

Draw graph between potential difference (V) and electric current (I) according to
Ohm's law.

IÊS> - ~

SECTION - B

12) n¥Ïdr Ho$ àmH¥${VH$ CnJ«h H$m ³¶m Zm‘ h¡? Bg CnJ«h H$s CËn{Îm H¡$go hþB© hmoJr? n¥Ïdr Ho$ {bE BgHo$ Xmo ‘hËd
~VmBE & [1+1+1=3]

What is the name of natural satellite of earth? How would have this satellite
originated? Mention its two importance for earth.

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13) Ordmí‘ {Z‘m©U H$s à{H«$¶m ~VmBE & Ordmí‘ H$s Am¶w H$s JUZm {H$g {d{Y go H$s Om gH$Vr h¡? [2+1=3]

Explain the process of fossil formation. By which method the age of fossil can
be determined?

14) àW‘ A§V[aj ¶mÌr H$m Zm‘ ~VmBE & AÝV[aj ‘| ^moOZ d ^mahrZVm ‘| ahZo H$s g‘ñ¶m H$m g‘mYmZ H$aZo Ho$
{bE AÝVaamîQ´>r¶ AÝV[aj ñQ>oeZ na H$m¡Zgr gw{dYmE± CnbãY h¡? [1+1+1=3]

Write the name of first astronaut. Which facilities are available to solve the problem
of food and living in Weightlessness on International space station?

15) A) amO‘mJm] na VoO àH$me nw§O H$m à¶moJ ³¶m| H$aZm Mm{hE?

~) gwa{jV S´>mBqdJ Ho$ {bE dmhZm| H$s h¡S> bmBQ> VWm nrN>o H$m Ñí¶ XoIZo Ho$ {bE {H$g àH$ma Ho$ Xn©Um| H$m
Cn¶moJ {H$¶m OmVm h¡?
[1+1+1=3]

a) Why high beams of light should be used on highways?

b) For safe driving which type of mirrors are used in head lights and rear view
mirror of vehicles?

16) A) Zmê$ amoJ (~mbm) Ho$ amoJOZH$ H$m Zm‘ {b{IE &

~) A’$s‘ ‘| nm¶o OmZo dmbo Xmo EëHo$bm°¶S>m| Ho$ Zm‘ {b{IE &

g) JwQ>Im M~mZo go hmoZo dmbo amoJ H$m Zm‘ {b{IE &
[1+1+1=3]

a) Write the name of pathogen of naru (Bala) disease.

b) Write the name of two alkaloids found in opium.

c) Write the name of disease caused by Chewing gutkha.

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17) {ZåZ{b{IV amgm¶{ZH$ g‘rH$aUm| ‘| -

C + O2 ¶¶
l CO2 ------- (i)

2 H2O ¶¶ ¶l 2H2+ O2 ------- (ii)
^G´Z9 <PDP

A) amgm¶{ZH$ g‘rH$aU (i) VWm (ii) H$mo nhMmZH$a CgH$m àH$ma {b{IE &

~) g‘rH$aU (i) VWm (ii) ‘§o H$moB© EH$ AÝVa {b{IE &

g) CËàoaH$ {df VWm CËàoaH$ dY©H$ ‘§o EH$ AÝVa {b{IE &
[1+1+1=3]

In the following chemical equations -

l CO2 ------- (i)
C + O2 ¶¶

2 H2O ¶¶¶
Electric Current
¶¶ l 2H2+ O2 ------- (ii)
a) Identify equation (i) and (ii) and write its types.
b) Write any one difference between equation (i) and (ii).
c) Write one difference between catalytic inhibitor and catalytic promoter.

18) dZ CnOmD$ {‘Å>r H$s ajm H¡$go H$aVo h¢? dZm| Ho$ g§ajU hoVw à¶wº$ Mma Cnm¶ ~VmBE & [1+2=3]

How does forest protect fertile soil? Write four measures adopted for protection
of the forests.

19) àmMrZV‘ J«ÝW ""MaH$ g§{hVm'' {H$g ^mfm ‘| {bIm J¶m h¡? AmZwdm§{eH$s Ho$ g§X^© ‘| MaH$ H$s OmZH$mar
g‘PmBE & [1+2=3]

The ancient grantha "Charak Samhita" has been written in which language?
Explain the knowledge of charak in relation to genetics.

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20) A) Q>oarbrZ ‘| à¶wº$ {H$gr EH$ EH$bH$ H$m Zm‘ {b{IE &

~) ‘me© J¡g H$m g§aMZm gyÌ {b{IE &
g) CH3–CH–CH2–CH=CH2 H$m I.U.P.A.C Zm‘ {b{IE &
Cl [1+1+1=3]

a) Write name of any one monomer used in terylene.

b) Write structural formula of marsh gas.

c) Write I.U.P.A.C name of CH3–CH–CH2–CH=CH2
Cl

21) O¡d {M{H$Ëgr¶ An{eîQ> ³¶m h¡? BZgo hmoZo dmbo Xmo amoJm| Ho$ Zm‘ ~VmBE & ^ñ‘rH$aU {d{Y Ûmam BZHo$
{ZñVmaU H$s à{H«$¶m g‘PmBE & [1+1+1=3]

What are Biomedical wastes? Mention the name of two diseases caused by them.
Explain the process of their disposal by incernation method.

IÊS> - g
SECTION - C

22) A) ‘N>br ‘| {H$g nmofH$ VËd H$s A{YH$Vm hmoVr h¡?
~) AbdUr¶ Ob H$s ‘N>{b¶m| Ho$ Xmo CXmhaU Xr{OE &
g) BZH$m ^moOZ ³¶m h¡?
X) Obme¶ ‘| ‘N>{b¶m| H$m A{YH$V‘ CËnmXZ H¡$go {H$¶m OmVm h¡?
[1+1+1+1=4]

a) Which nutritive element is found in abundance in fish?

b) Give two examples of fresh water fishes.

c) What is their diet?

d) How maximum production of fishes is done in pond?

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23) ‘oÊS>b Ho$ à^m{dVm Ho$ {Z¶‘ H$mo gCXmhaU g‘PmB¶o & ‘oÊS>b Ho$ d§emJ{V Ho$ {Z¶‘m| Ho$ H$moB© Xmo ‘hÎd
{b{IE & [2+2=4]

Explain Mendel's law of dominance with example. Write any two importance of
Mendel's laws of inheritance.

24) A) {ZåZ{b{IV H$WZmo Ho$ H$maU ñnîQ> H$s{OE &

i) {‘ëH$ Am°’$ ‘¡¾r{e¶m H$mo Am‘me¶ H$s AåbVm Ho$ CnMma ‘o à¶wº$ H$aVo h¡ &

ii) {H$gr Xoe H$s Am¡Úmo[JH$ àJ{V H$mo gëâ¶y[aH$ Aåb Ho$ Cn^moJ Ho$ AmYma na ‘mnr OmVr h¡ &

~) hmBS´>moOZ J¡g ~ZmZo H$m Zm‘m§{H$V {MÌ ~ZmBE &
[1+1+2=4]

a) Give reasons of the following statements -

i) Milk of magnesia is used for treatment of acidity in stomach.

ii) Industrial development of any country is measured on the basis of
consumptions of sulphuric acid.

b) Draw a labelled diagram for preparation of Hydrogen gas.

25) à˶mdVu Ymam O{ZÌ H$s ~ZmdQ> Ed§ H$m¶©{d{Y H$m dU©Z H$s{OE & [2+2=4]

Explain the construction and working of alternating current generator.

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26) A) 75 kg H$m EH$ ì¶{³V 25 sec. ‘| 5m D±$MmB© VH$ M‹T>Vm h¡ & ì¶{³V Ûmam 춶 e{³V kmV H$s{OE&
(g = 10m/s2)>
~) 9 kg H$m EH$ JwQ>Im Kf©U a{hV n¥ð> na 4 m/s Ho$ doJ go J{V‘mZ h¡ & ¶h JwQ>Im pñà¨J H$mo g§nr{S>V H$aHo$
{dam‘mdñWm ‘o Am OmVm h¡ & ¶{X pñà¨J {Z¶Vm§H$ 4×104 N/kg hmo Vmo pñà¨J ‘| g§nrS>Z kmV H$s{OE &
[2+2=4]
a) A person of 75 kg climbs upto a height of 5m in 25 sec. Calculate the
power consumed by person. (g = 10m/s2)
b) A block of 9 kg is moving with velocity of 4 m/s on frictionless surface.
The block comes into rest by compressing the spring. If spring constant is
4×104 N/kg then find the compression in the spring.

27) O¡d {d{dYVm go AmnH$m ³¶m A{^àm¶ h¡? O¡d {d{dYVm Ho$ H$moB© Xmo ‘hËd g‘PmBE & [2+2=4]
What do you mean by Biodiversity? Explain any two importance of biodiversity.
AWdm/OR
AmZwdm§{eH$ {d{dYVm go AmnH$m ³¶m A{^àm¶ h¡? O¡d{d{dYVm g§H$Q> Ho$ H$moB© Xmo H$maU g‘PmBE &
What do you mean by genetic diversity. Explain any two reasons of threats to
biodiversity.

IÊS> - X
SECTION - D
28) A) CËgO©Z ³¶m h¢?
~) ‘yÌ {Z‘m©U H$s JwÀN>r¶ {Zñn§XZ {H«$¶m{d{Y H$mo g‘PmB¶o &
g) ‘mZd CËgO©Z V§Ì H$m Zm‘m§{H$V {MÌ ~ZmB¶o &
[1+2+2=5]
a) What is excretion?
b) Explain the mechanism of glomerular formation in urine formation.
c) Draw a labelled diagram of human excretory system.
AWdm/OR

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A) V§{ÌH$m V§Ì H$m H$m¡Zgm ^mJ nmMH$ agm| Ho$ ómdU ‘| d¥ÜXr H$aVm h¡ &
~) V§{ÌH$m AmdoJ d gpÝY ñWb (Synapse) H$mo n[a^m{fV H$s{OE &
g) V§{ÌH$m H$s g§aMZm H$m Zm‘m§{H$V {MÌ ~ZmB¶o &
[1+2+2=5]
a) Which part of nervous system increase the secretion of digestive juices.
b) Define nerve impulse and synapse.
c) Draw a labelled diagram of structure of neuron.

29) A) dJ© ‘§o VËdmo H$m na‘mUw AmH$ma D$na go ZrMo H$s Amoa OmZo na ~T>Vm h¡ H$maU ñnîQ> H$s{OE &
~) VËdmo Ho$ dJuH$aU hoVw AîQ>H$ {Z¶‘ XoZo dmbo d¡km{ZH$ H$m Zm‘ {bIH$a AîQ>H$ {Z¶‘ g‘PmBE &
g) e– – àX{e©V aXa’$moS>© ‘m°S>b ‘o Bbo³Q´>m°Z Ho$ Ho$ÝÐ na pñWV na‘mUdr¶ H$U H$m Zm‘ {b{IE
e
e– e– Bg ‘m°S>b H$s EH$ {deofVm ~VmBE &
e–
[1+2+2=5]
a) Explain why the atomic size of elements increases from top to bottom in a
group.
b) Write name of scientist who has given the octaves rule for classification of
elements. Explain octaves rule.
c) e– – Write the name of atomic particle present at the center of electrons in
e
e– represented Rutherford's model. Write one characteristics of this model.
– e
–
e
AWdm/OR
A) Amd©V ‘o VËdmo Ho$ YmpËdH$ JwU ~m¶o go Xm¶o Amoa OmZo na KQ>Vo h¡ H$maU ñnîQ> H$s{OE &
~) VËd Ho$ dJuH$aU H$m {ÌH$ {Z¶‘ XoZo dmbo d¡km{ZH$ H$m Zm‘ {b{IE {ÌH$ {Z¶‘ g‘PmBE &
g) Wm°‘gZ Ho$ na‘mUw à{Vê$n ‘| Jmobo Ho$ AÝXa CnpñWV na‘mUdr¶ H$Um| H$m Zm‘ {b{IE&
‘m°S>b H$mo EH$ CXmhaU go g‘PmBE &
[1+2+2=5]

a) Explain why the metallic character of elements decreases from left to right
in period.
b) Write the name of scientist who has given a triad law for classification of
elements. Explain law of triad.
c) Write name of the atomic particle present in the sphere of
represented Thomson atomic model. Explain model with one
example.
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30) A) ‘mܶ‘ Ho$ AndV©Zm§H$ H$s n[a^mfm {b{IE &
~) {ZH$Q> ÑîQ>r Xmof {H$go H$hVo h¡? Bg Xmof H$m {ZdmaU {H$g àH$ma {H$¶m OmVm h¡?

g) H$m±M Ho$ ñb¡~ Ûmam àH$me Ho$ AndV©Z H$m {H$aU {MÌ ~ZmBE &
[1+1+1+2=5]

a) Write the definition of refractive index of a medium.

b) What is the myopia? How this defect can be corrected?

c) Draw a ray diagram of refraction of light in a glass slab.

AWdm/OR

A) AmdY©ZVm ³¶m h¡?

~) ZoÌ H$s g‘§OZ j‘Vm Ed§ ÑpîQ> namg H$mo n[a^m{fV H$s{OE &

g) EH$ {~å~ CÎmb Xn©U Ho$ Y«wd Ed§ AZÝV Ho$ ~rM pñWV h¡ & {H$aU {MÌ ~ZmH$a à{V{~å~ H$s pñW{V
g‘PmBE &
[1+1+1+2=5]

a) What is magnification?

b) Define the power of accommodation of an eye and the range of the vision.

c) An object is situated between infinite and pole of a convex mirror. Explain
the position of image with ray diagram.

yyy

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