NIOS Class 10 Question Paper 2022 (Apr) Science

This Question Paper consists of 30 questions and 12 printed pages.
Bg àíZ-nÌ _| 30 àíZ VWm 12 ‘w{ÐV n¥ ð > h¢ &
Sl. No.

Roll No. Code No.
AZw H « $ _m§ H $ H$mo S > Z§ .
63/OS/1
SCIENCE AND TECHNOLOGY
Set / go Q > A
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Day and Date of Examination :
(narjm H$m {XZ d {XZm§ H $)
Signature of Invigilators : 1.
({ZarjH$m| Ho $ hñVmja)
2.

General Instructions :

1. Candidate must write his/her Roll Number on the first page of the Question Paper.

2. Please check the Question Paper to verify that the total pages and the total number of questions
contained in the Question Paper are the same as those printed on the top of the first page. Also check
to see that the questions are in sequential order.

3. For the objective type of questions, you have to choose any one of the four alternatives given in the
question i.e. (A), (B), (C) and (D) and indicate your correct answer in the Answer-Book given to you.

4. All the questions including objective type questions are to be answered within the allotted time and
no separate time limit is fixed for answering objective type questions.

5. Making any identification mark in the Answer-Book or writing Roll Number anywhere other than
the specified places will lead to disqualification of the candidate.

6. Write your Question Paper Code No. 63/OS/1, Set - A on the Answer-Book.

7. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer
in any one of the languages listed below :

English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Odia,
Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi.

You are required to indicate the language you have chosen to answer in the box provided in
the Answer-Book.

(b) If you choose to write the answer in the language other than Hindi and English, the
responsibility for any errors/mistakes in understanding the questions will be yours only.

63/OS/1–212-A] G-937 1 [ Contd......

gm_mÝ` AZwXoe :

1. narjmWu àíZ-nÌ Ho$ nhbo n¥ð> na AnZm AZwH«$‘m§H$ Adí¶ {bI|&

2. H¥$n¶m àíZ-nÌ H$mo Om±M b| {H$ àíZ-nÌ Ho$ Hw$b n¥ð>m| VWm àíZm| H$s CVZr hr g§»¶m h¡ {OVZr àW‘ n¥ð> Ho$ g~go D$na N>nr h¡& Bg
~mV H$s Om±M ^r H$a b| {H$ àíZ H«${‘H$ ê$n ‘| h¢&

3. dñVw{Zð> àíZm| _| AmnH$mo Mma {dH$ënm| (A), (B), (C) VWm (D) _| go H$moB© EH$ CÎma MwZZm h¡ VWm Xr JB© CÎma-nwpñVH$m _| Amn ghr
CÎma {b{IE&

4. dñVw{Zð> àíZm| Ho$ gmW-gmW g^r àíZm| Ho$ CÎma {ZYm©[aV Ad{Y Ho$ ^rVa hr XoZo h¢& dñVw{Zð> àíZm| Ho$ {bE AbJ go g_` Zht {X`m
OmEJm&

5. CÎma-nwpñVH$m ‘| nhMmZ-{M• ~ZmZo AWdm {Z{X©ï> ñWmZm| Ho$ A{V[aº$ H$ht ^r AZwH«$‘m§H$ {bIZo na narjmWu H$mo A¶mo½¶ R>ham¶m
Om¶oJm&

6. AnZr CÎma-nwpñVH$m na àíZ-nÌ H$r H$moS> g§»¶m 63/OS/1, goQ> - A {bI|&

7. (H$) àíZ-nÌ Ho$db A§Jo«Or/qhXr ‘mܶ‘ ‘| h¡& {’$a ^r, ¶{X Amn Mmh| Vmo ZrMo Xr JB© {H$gr EH$ ^mfm ‘| CÎma Xo gH$Vo h¢ :
A§J«oOr, qhXr, CXÿ©, n§Om~r, ~±Jbm, V{‘b, ‘b¶mb‘, H$ÝZ‹S>, VobwJy, ‘amR>r, C{‹S>¶m, JwOamVr, H$m|H$Ur, ‘{Unwar, Ag{‘¶m,
Zonmbr, H$í‘rar, g§ñH¥$V Am¡a qgYr&

H¥$n¶m CÎma-nwpñVH$m ‘| {XE JE ~m°³g ‘| {bI| {H$ Amn {H$g ^mfm ‘| CÎma {bI aho h¢&

(I) ¶{X Amn qhXr Ed§ A§J«oOr Ho$ A{V[a³V {H$gr Aݶ ^mfm ‘| CÎma {bIVo h¢, Vmo àíZm| H$mo g‘PZo ‘| hmoZo dmbr Ìw{Q>¶m|/Jb{V¶m|
H$s {Oå‘oXmar Ho$db AmnH$s hmoJr&

63/OS/1–212-A] G-937 2 [ Contd......

SCIENCE AND TECHNOLOGY
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Time : 2 ½ Hours] [Maximum Marks : 85
g_` : 2 ½ KÊQ>o] [nyUmªH$ : 85

Note : (i) All questions are compulsory.

(ii) Marks are indicated against each question.

{ZX} e : (i) g^r àíZ A{Zdm`© h¢&

(ii) àË`oH$ àíZ Ho$ A§H$ CgHo$ gm_Zo {XE JE h¢&

1. The derived SI unit of power is [1]

e{º$ H$m ì`wËnÞ SI _mÌH$ h¡

(A) m kg s–2 (B) m–2 kg s–3

(C) m2 kg s–3 (D) m2 kg s–2

2. 5.0 × 1018 m can also be expressed as [1]

5.0 × 1018 m H$mo {ZåZ àH$ma go ^r ì`º$ {H$`m Om gH$Vm h¡

(A) 5.0 Zm (B) 5.0 Em

(C) 5.0 am (D) 5.0 ym

63/OS/1–212-A] G-937 3 [ Contd......

3. Which of the following is not a homogeneous mixture? [1]
(A) Tincture iodine (B) Soda water
(C) Brass (D) Milk
{ZåZ{b{IV _| go H$m¡Z gm g_m§Jr {_lU Zht h¡?
(A) qQ>Ma Am`moS>rZ (B) gmoS>m dmQ>a
(C) nrVb (D) XÿY

4. Read the following statements carefully and select the group of incorrect statements
about an atom? [1]
(i) Atoms can exist independently in free state.
(ii) Atoms are the basic units from which molecules and ions are formed.
(iii) Some atoms are not neutral in nature.
(iv) Atoms aggregate in large numbers to form the matter that we can see, feel
or touch.
(A) (i) and (ii) (B) (i) and (iii)
(C) (ii) and (iii) (D) (i) and (iv)
EH$$ na_mUw Ho$ {bE {ZåZ{b{IV H$WZm| H$mo gmdYmZr go n{T>E Am¡a CZ H$WZm| H$m g_yh Mw{ZE Omo gË` Zht h¢?
(i) na_mUw AHo$bo-AHo$bo ñdVÝÌ ApñVËd _| ah nmVo h¢&
(ii) na_mUw _yb BH$mB`m± h¢ {OZgo AUwAm| Am¡a Am`Zm| H$m {Z_m©U hmoVm h¡&
(iii) Hw$N> na_mUw CXmgrZ àH¥${V Ho$ Zht hmoVo h¢&
(iv) na_mUw ~‹S>r g§»`m _| nañna Ow‹S>H$a nXmW© H$m {Z_m©U H$aVo h¢, {Ogo h_ XoI, AZw^d `m ñne© H$a
gH$Vo h¢&
(A) (i) VWm (ii) (B) (i) VWm (iii)
(C) (ii) VWm (iii) (D) (i) VWm (iv)

63/OS/1–212-A] G-937 4 [ Contd......

5. A mango falls from a tree due to gravitational attraction between earth and mango.
If Fe is the magnitude of force exerted by the earth on the mango and Fm is the
magnitude of the force exerted by the mango on the earth, then _____. [1]
(A) Fe is very much greater than Fm.
(B) Fm is very much greater than Fe.
(C) Fe is only a little greater than Fm.
(D) Fe and Fm are equal.
EH$ Am_ H$m \$b AnZo d¥j go n¥Ïdr VWm Am_ Ho$ ~rM Jwê$ËdmH$f©U ~b Ho$ H$maU n¥Ïdr na {JaVm h¡& `{X n¥Ïdr
Ûmam Am_ na Amamo{nV ~b H$m n[a_mU Fe VWm Am_ Ûmam n¥Ïdr na Amamo{nV ~b H$m n[a_mU Fm h¡, Vmo _____
(A) Fm H$s VwbZm _| Fe ~hþV A{YH$ hmoVm h¡& (B) Fe H$s VwbZm _| Fm ~hþV A{YH$ hmoVm h¡&
(C) Fm H$s VwbZm _| Fe Ho$db WmoS>m A{YH$ hmoVm h¡& (D) Fe VWm Fm ~am~a hmoVo h¢&

6. A body is falling from a height of 100m. After it has fallen through a distance of
25m from the top, it will possess _____. [1]
(A) only potential energy
(B) half potential and half kinetic energy
(C) more potential and less kinetic energy
(D) more kinetic and less potential energy
H$moB© qnS> 100m H$s D±$MmB© go {Ja ahm h¡& D$na go 25m H$s Xÿar VH$ {JaZo na Bg_| {Z{hV D$Om© hmoJr ____
(A) Ho$db pñW{VO D$Om©& (B) AmYr pñW{VO Am¡a AmYr J{VO D$Om©&
(C) A{YH$ pñW{VO D$Om© Am¡a H$_ J{VO D$Om©& (D) A{YH$ J{VO D$Om© Am¡a H$_ pñW{VO D$Om©

7. Involuntary actions in the body are controlled by medulla through [1]
(A) fore brain (B) mid-brain
(C) hind-brain (D) spinal cord
eara H$s AZ¡pÀN>H$ {H«$`mAm| H$m {Z`§ÌU _m°S²>`ybm Ûmam hmoVm h¡
(A) AJ«-_pñVîH$ Ho$ _mÜ`_ go& (B) _Ü`-_pñVîH$ Ho$ _mÜ`_ go&
(C) níM-_pñVîH$ Ho$ _mÜ`_ go& (D) _oê$a‚mw Ho$ _mÜ`_ go&

8. Which of the following oxide of nitrogen is neutral? [1]
{ZåZ{b{IV _| go ZmBQ´>moOZ H$m H$m¡Z gm Am°ŠgmBS> CXmgrZ h¡?
(A) N 2 O (B) N 2O 3
(C) N 2O 4 (D) NO 2

63/OS/1–212-A] G-937 5 [ Contd......

9. Which of the following arrangement of metals shows the correct decreasing
order of their reactivity? [1]
Zn Cu Ca Ca

Decreasing
Decreasing

Decreasing

Decreasing
Activity
Pb
Activity

Activity

Activity
Ca Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)
{ZåZ{b{IV ‘| go YmVwAm| H$s H$m¡Z gr ì¶dñWm CZH$s g{H«$¶Vm Ho$ KQ>Vo hþE H«$‘ H$mo R>rH$-R>rH$ Xem©Vr h¡?
Cu
KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm
Zn Ca Ca
Ca Pb Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)

10. State the SI units used while measuring [2]
(i) electric current while flowing through a heater.
(ii) temperature of a furnace.
(iii) length of a hockey play ground.
(iv) amount of substance.
{ZåZ{b{IV ‘mnZ H$aVo g‘¶ Cn¶moJ {H$¶o OmZo dmbo SI ‘mÌH$m| H$mo ~VmBE&
(i) {dÚwV hrQ>a ‘| ~hZo dmbr {dÚwV Ymam
(ii) {H$gr ^Å>r H$m Vmn
(iii) hm°H$s Ho$ Iob Ho$ ‘¡XmZ H$s bå~mB©
(iv) nXmW© H$s ‘mÌm

11. Balance the following chemical equations and identify the type of chemical
reaction. [2]
{ZåZ{b{IV amgm¶{ZH$ g‘rH$aUm| H$mo g§Vw{bV H$s{OE VWm amgm¶{ZH$ A{^{H«$¶m Ho$ àH$ma H$mo nhMm{ZE&
(i) Fe 2O 3 + Al → Al2O 3 + Fe

(ii) Pb ( NO 3 )2 ⎯⎯ ⎯
Heat
→ PbO + NO 2 + O 2

63/OS/1–212-A] G-937 6 [ Contd......

12. The given velocity-time graph shows the motion of a cyclist. Find (i) its
acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 16
seconds. [2]
20
Velocity (ms–1)

15
10
5
0
4 8 12 16 20 24
Time (s)
{X¶m J¶m doJ-g‘¶ J«m’$ {H$gr gmB{H$b gdma H$s J{V H$mo Xem©Vm h¡& Bg J{V H$m (i) ËdaU (ii) doJ VWm
(iii) 16 goH§$S> ‘| gmB{H$b gdma Ûmam V¶ H$s JB© Xÿar kmV H$s{OE&

20
15
doJ (ms–1)

10
5
0
4 8 12 16 20 24

g_` (s)
13. In the given figure of a plant cell, name the parts labelled as [2]
nmXn H$mo{eH$m Ho$ {XE JE {MÌ ‘| {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE&
(i) a, (ii) b, (iii) c and/Am¡a (iv) d

d
c
b

a

63/OS/1–212-A] G-937 7 [ Contd......

14. Define relative humidity. Name the instrument used to measure relative humidity.
Is it necessary to measure the temperature also while measuring the relative
humidity? [2]
Amno{jH$ AmЩVm H$mo n[a^m{fV H$s{OE& Amno{jH$ AmЩVm H$mo ‘mnZo dmbo ¶§Ì H$m Zm‘ ~VmBE& ³¶m Amno{jH$
AmЩVm H$mo ‘mnVo g‘¶ Vmn H$m ‘mnZ ^r Amdí¶H$ hmoVm h¡?

15. State the mode of transmission of dengue fever. Mention its any three symptoms.
[2]
S>|Jy Áda H$s g§H«$‘U {d{Y ~VmBE& BgHo$ H$moB© VrZ bjU ^r {b{IE&

16. Name the scale on which the intensity of an earthquake is measured. Suggest
any three preventive measures which may be adopted in the event of an
earthquake. [2]
^yH$ån H$s Vrd«Vm H$mo ‘mnZo dmbo ¶ÝÌ H$m Zm‘ ~VmBE& ^yH$ån AmZo Ho$ g‘¶ gwajm Ho$ {bE AnZmE OmZo dmbo
H$moB© VrZ gwajm-Cnm¶ gwPmBE&

17. Draw the diagram of respiratory system in human beings and label the following
parts : [4]
(a) Glottis
(b) Trachea
(c) Lungs
(d) Bronchioles
‘mZd ‘| ídgZVÝÌ H$m {MÌ ~ZmBE Am¡a {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE …
(a) H§$R>Ûma
(b) ídmgZbr
(c) ’o$’$‹S>o
(d) ídg{ZH$mE§

63/OS/1–212-A] G-937 8 [ Contd......

18. What is meant by atomic number and mass number of an atom? Two atoms X and
Y are denoted as follows. Find out the atomic number and valency of X and Y. [4]

(i) 20
10
X (ii) 27
13
Y

{H$gr na‘mUw Ho$ na‘mUw H«$‘m§H$ VWm Ð춑mZ g§»¶m go ³¶m A{^àm¶ h¡? Xmo na‘mUwAm| X VWm Y H$mo {ZåZ
àH$ma Xem©¶m J¶m h¡&

(i) 20
10
X (ii) 27
13
Y

X VWm Y Ho$ na‘mUw H«$‘m§H$ VWm g§¶moOH$Vm kmV H$s{OE&

19. For making cake, we use baking powder. If we use baking soda instead of
baking powder in cake [4]

(i) how will it affect the taste of the cake and why?

(ii) how can baking soda be converted into baking powder? Give two other
uses of baking soda.

Ho$H$ ~ZmZo Ho$ {bE h‘ ~oqH$J nmC‹S>a H$m‘ ‘| boVo h¢& ¶{X h‘ ~oqH$J nmCS>a Ho$ ñWmZ na ~oqH$J gmoS>m Cn¶moJ
‘| bo Vmo -
(i) ¶h Ho$H$ Ho$ ñdmX H$mo H¡$go à^m{dV H$aoJm?
(ii) ~oqH$J gmoS>m H$mo ~oqH$J nmCS>a ‘| H¡$go n[ad{V©V {H$¶m Om gH$Vm h¡? ~oqH$J gmoS>m Ho$ Xmo Aݶ Cn¶moJ
{b{IE&

20. Explain the process of covalent bond formation with the help of an example.
Identify the covalent bonds present in the following molecules : [4]

{H$gr EH$ CXmhaU H$s ghm¶Vm go ì¶m»¶m H$s{OE {H$ ghg§¶moOr Am~§Y H¡$go ~ZVm h¡? {ZåZ{b{IV AUwAm|
‘| CnpñWV ghg§¶moOr Am~§Ymo H$mo nhMm{ZE …
(i) N2 (ii) Cl2

(iii) O 2 (iv) HCl

63/OS/1–212-A] G-937 9 [ Contd......

21. Water sprinkler used for grass lawns begins to rotate as soon as the water is
supplied. Name and state the law of motion on which it works. State three
significant features of this law. [4]
Kmg Ho$ ‘¡XmZ ‘| Ob H$m {N>‹S>H$md H$aZo dmbm ’$ìdmam, Ob H$s Amny{V© Ama§^ hmoVo hr Ky‘Zo bJVm h¡& J{V Ho$
Cg {Z¶‘ H$m Zm‘ Am¡a H$WZ {b{IE {Og na ¶h ’$ìdmam H$m¶© H$aVm h¡& Bg {Z¶‘ Ho$ VrZ ‘hËdnyU© bjU
~VmBE&

22. (i) Draw ray diagrams showing the image formation by a convex lens when
an object is placed -
(a) between optical centre and focus of the lens.
(b) at twice the focal length of the lens.
(ii) An object is placed perpendicular to the principal axis of a convex lens of
focal length 15 cm. The distance of the object from the lens is 20 cm. Find
the nature and position of the image.
[4]
(i) CÎmb b|g Ûmam à{Vq~~ ~ZVm Xem©Zo Ho$ {bE àH$me {H$aU AmaoI It{ME O~{H$ q~~ pñWV h¡ -
(a) b|g Ho$ àH$m{eH$ Ho$ÝÐ Am¡a ’$moH$g Ho$ ~rM&
(b) b|g H$s ’$moH$g Xÿar Ho$ XmoJwZo Xÿar na&
(ii) 15 cm ’$moH$g Xÿar Ho$ {H$gr CÎmb b|g H$s ‘w»¶ Aj Ho$ b§~dV EH$ q~~ H$mo aIm J¶m h¡& q~~ H$s
b|g go Xÿar 20 cm h¡& à{Vq~~ H$s àH¥${V Am¡a pñW{V kmV H$s{OE&

23. (i) Derive a relation for the equivalent resistance of three resistors connected in
parallel.
(ii) Three resistors of resistances 10Ω, 15Ω and 30Ω respectively are connected
in parallel to a battery of 12V. Calculate
(a) the total circuit resistance and
(b) the current through the resistor of resistance 10Ω.
[4]
(i) g‘mÝVa H«$‘ ‘| Ow‹S>o VrZ à{VamoYH$m| Ho$ n[aUm‘r à{VamoY Ho$ {bE 춧OH$ ì¶wËnÞ H$s{OE&
(ii) H«$‘e… 10Ω, 15Ω VWm 30Ω Ho$ VrZ à{VamoYH$ 12V H$s ~¡Q>ar Ho$ gmW g‘mÝVa H«$‘ ‘| g§¶mo{OV
{H$E JE h¢& n[aH${bV H$s{OE -
(a) n[anW ‘| n[aUm‘r à{VamoY&
(b) 10Ω Ho$ à{VamoYH$ go ~hZo dmbr {dÚwV Ymam&

63/OS/1–212-A] G-937 10 [ Contd......

24. What is meant by genetic disorders? Name the type of chromosome on which
defective genes causing haemophilia and colour-blindness are located. Why is
haemophilia and colour-blindness found mostly in boys and not in girls? Explain.
[4]

AmZwd§{eH$ {dH$mam| go ³¶m VmËn¶© h¡? Cg JwUgyÌ Ho$ àH$ma H$m Zm‘ ~VmBE {Og na hr_mo\$s{b`m VWm a§Jm§YVm
Ho$ XmofnyU© OrZ pñWV hmoVo h¢& hr‘mo’$s{b¶m VWm a§Jm§YVm àm¶… bS>H$m| ‘| hr ³¶m| nmB© OmVr h¡, b‹S>{H$¶m| ‘| ³¶m|
Zht? ì¶m»¶m H$s{OE&

25. With the help of neat labelled diagrams explain the asexual reproduction in the
following organisms : [4]

(a) Binary fission in amoeba.

(b) Budding in hydra.

ñdÀN> Zm‘m§{H$V {MÌm| Ûmam {ZåZ{b{IV Ordm| ‘| Ab¢{JH$ OZZ H$s ì¶m»¶m H$s{OE …

(a) A‘r~m ‘| {Û^mOr {dI§S>Z

(b) hmBS´>m ‘| ‘wHw$bZ

26. What is meant by an ecosystem? Taking the example of a pond explain the
terms abiotic and biotic components of the ecosystem. [4]

nm[aVÝÌ go ³¶m VmËn¶© hmoVm h¡? Vmbm~ H$m CXmhaU boH$a nm[aVÝÌ Ho$ O¡{dH$ VWm AO¡{dH$ KQ>H$m| H$s
ì¶m»¶m H$s{OE&

27. How is compost different from vermicompost? How will you make vermicompost
for your school garden? [4]

H$ånmoñQ> VWm d‘u H$ånmoñQ> ‘| ³¶m AÝVa h¡? AnZo {dÚmb¶ Ho$ ~JrMo Ho$ {bE Amn d‘u H$ånmoñQ> {H$g àH$ma
V¡¶ma H$a|Jo?

63/OS/1–212-A] G-937 11 [ Contd......

28. Name the three amorphous forms of carbon. How are they formed? Write one
use of each form. [6]

H$m~©Z Ho$ VrZ gyú‘ ñ’$Q>r` ê$nm| Ho$ Zm‘ ~VmBE& BZH$m {Z‘m©U H¡$go hmoVm h¡? à˶oH$ ê$n H$m EH$-EH$ Cn¶moJ
{b{IE&

29. State any three merits and three defects of Mendeleev's periodic table. [6]

‘oÝS>obr’$ AmdV© gmaUr Ho$ H$moB© VrZ JwU Am¡a VrZ Xmof ~VmBE&

30. What is biomass? How can it be used as a source of energy? Give advantages
and limitations of using biomass as a source of energy. [6]

O¡d^ma {H$go H$hVo h¢? Bgo D$Om© òmoV Ho$ ê$n ‘| H¡$go Cn¶moJ _| bm¶m Om gH$Vm h¡? O¡d^ma H$mo D$Om© Ho$ ê$n
‘| Cn¶moJ H$aZo Ho$ bm^ Am¡a gr‘mE± ~VmBE&



63/OS/1–212-A] G-937 12

This Question Paper consists of 30 questions and 12 printed pages.
Bg àíZ-nÌ _| 30 àíZ VWm 12 ‘w{ÐV n¥ ð > h¢ &
Sl. No.

Roll No. Code No.
AZw H « $ _m§ H $ H$mo S > Z§ .
63/OS/1
SCIENCE AND TECHNOLOGY
Set / go Q > B
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Day and Date of Examination :
(narjm H$m {XZ d {XZm§ H $)
Signature of Invigilators : 1.
({ZarjH$m| Ho $ hñVmja)
2.

General Instructions :

1. Candidate must write his/her Roll Number on the first page of the Question Paper.

2. Please check the Question Paper to verify that the total pages and the total number of questions
contained in the Question Paper are the same as those printed on the top of the first page. Also check
to see that the questions are in sequential order.

3. For the objective type of questions, you have to choose any one of the four alternatives given in the
question i.e. (A), (B), (C) and (D) and indicate your correct answer in the Answer-Book given to you.

4. All the questions including objective type questions are to be answered within the allotted time and
no separate time limit is fixed for answering objective type questions.

5. Making any identification mark in the Answer-Book or writing Roll Number anywhere other than
the specified places will lead to disqualification of the candidate.

6. Write your Question Paper Code No. 63/OS/1, Set - B on the Answer-Book.

7. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer
in any one of the languages listed below :

English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Odia,
Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi.

You are required to indicate the language you have chosen to answer in the box provided in
the Answer-Book.

(b) If you choose to write the answer in the language other than Hindi and English, the
responsibility for any errors/mistakes in understanding the questions will be yours only.

63/OS/1–212-B] G-937 1 [ Contd......

gm_mÝ` AZwXoe :

1. narjmWu àíZ-nÌ Ho$ nhbo n¥ð> na AnZm AZwH«$‘m§H$ Adí¶ {bI|&

2. H¥$n¶m àíZ-nÌ H$mo Om±M b| {H$ àíZ-nÌ Ho$ Hw$b n¥ð>m| VWm àíZm| H$s CVZr hr g§»¶m h¡ {OVZr àW‘ n¥ð> Ho$ g~go D$na N>nr h¡& Bg
~mV H$s Om±M ^r H$a b| {H$ àíZ H«${‘H$ ê$n ‘| h¢&

3. dñVw{Zð> àíZm| _| AmnH$mo Mma {dH$ënm| (A), (B), (C) VWm (D) _| go H$moB© EH$ CÎma MwZZm h¡ VWm Xr JB© CÎma-nwpñVH$m _| Amn ghr
CÎma {b{IE&

4. dñVw{Zð> àíZm| Ho$ gmW-gmW g^r àíZm| Ho$ CÎma {ZYm©[aV Ad{Y Ho$ ^rVa hr XoZo h¢& dñVw{Zð> àíZm| Ho$ {bE AbJ go g_` Zht {X`m
OmEJm&

5. CÎma-nwpñVH$m ‘| nhMmZ-{M• ~ZmZo AWdm {Z{X©ï> ñWmZm| Ho$ A{V[aº$ H$ht ^r AZwH«$‘m§H$ {bIZo na narjmWu H$mo A¶mo½¶ R>ham¶m
Om¶oJm&

6. AnZr CÎma-nwpñVH$m na àíZ-nÌ H$r H$moS> g§»¶m 63/OS/1, goQ> - B {bI|&

7. (H$) àíZ-nÌ Ho$db A§Jo«Or/qhXr ‘mܶ‘ ‘| h¡& {’$a ^r, ¶{X Amn Mmh| Vmo ZrMo Xr JB© {H$gr EH$ ^mfm ‘| CÎma Xo gH$Vo h¢ :
A§J«oOr, qhXr, CXÿ©, n§Om~r, ~±Jbm, V{‘b, ‘b¶mb‘, H$ÝZ‹S>, VobwJy, ‘amR>r, C{‹S>¶m, JwOamVr, H$m|H$Ur, ‘{Unwar, Ag{‘¶m,
Zonmbr, H$í‘rar, g§ñH¥$V Am¡a qgYr&

H¥$n¶m CÎma-nwpñVH$m ‘| {XE JE ~m°³g ‘| {bI| {H$ Amn {H$g ^mfm ‘| CÎma {bI aho h¢&

(I) ¶{X Amn qhXr Ed§ A§J«oOr Ho$ A{V[a³V {H$gr Aݶ ^mfm ‘| CÎma {bIVo h¢, Vmo àíZm| H$mo g‘PZo ‘| hmoZo dmbr Ìw{Q>¶m|/Jb{V¶m|
H$s {Oå‘oXmar Ho$db AmnH$s hmoJr&

63/OS/1–212-B] G-937 2 [ Contd......

SCIENCE AND TECHNOLOGY
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Time : 2 ½ Hours] [Maximum Marks : 85
g_` : 2 ½ KÊQ>o] [nyUmªH$ : 85

Note : (i) All questions are compulsory.

(ii) Marks are indicated against each question.

{ZX} e : (i) g^r àíZ A{Zdm`© h¢&

(ii) àË`oH$ àíZ Ho$ A§H$ CgHo$ gm_Zo {XE JE h¢&

1. Read the following statements carefully and select the group of incorrect statements
about an atom? [1]
(i) Atoms can exist independently in free state.
(ii) Atoms are the basic units from which molecules and ions are formed.
(iii) Some atoms are not neutral in nature.
(iv) Atoms aggregate in large numbers to form the matter that we can see, feel
or touch.
(A) (i) and (ii) (B) (i) and (iii)
(C) (ii) and (iii) (D) (i) and (iv)
EH$$ na_mUw Ho$ {bE {ZåZ{b{IV H$WZm| H$mo gmdYmZr go n{T>E Am¡a CZ H$WZm| H$m g_yh Mw{ZE Omo gË` Zht h¢?
(i) na_mUw AHo$bo-AHo$bo ñdVÝÌ ApñVËd _| ah nmVo h¢&
(ii) na_mUw _yb BH$mB`m± h¢ {OZgo AUwAm| Am¡a Am`Zm| H$m {Z_m©U hmoVm h¡&
(iii) Hw$N> na_mUw CXmgrZ àH¥${V Ho$ Zht hmoVo h¢&
(iv) na_mUw ~‹S>r g§»`m _| nañna Ow‹S>H$a nXmW© H$m {Z_m©U H$aVo h¢, {Ogo h_ XoI, AZw^d `m ñne© H$a
gH$Vo h¢&
(A) (i) VWm (ii) (B) (i) VWm (iii)
(C) (ii) VWm (iii) (D) (i) VWm (iv)

63/OS/1–212-B] G-937 3 [ Contd......

2. A body is falling from a height of 100m. After it has fallen through a distance of
25m from the top, it will possess _____. [1]
(A) only potential energy
(B) half potential and half kinetic energy
(C) more potential and less kinetic energy
(D) more kinetic and less potential energy
H$moB© qnS> 100m H$s D±$MmB© go {Ja ahm h¡& D$na go 25m H$s Xÿar VH$ {JaZo na Bg_| {Z{hV D$Om© hmoJr ____
(A) Ho$db pñW{VO D$Om©& (B) AmYr pñW{VO Am¡a AmYr J{VO D$Om©&
(C) A{YH$ pñW{VO D$Om© Am¡a H$_ J{VO D$Om©& (D) A{YH$ J{VO D$Om© Am¡a H$_ pñW{VO D$Om©

3. Which of the following arrangement of metals shows the correct decreasing
order of their reactivity? [1]

Zn Cu Ca Ca
Decreasing
Decreasing

Decreasing

Decreasing
Activity

Pb
Activity

Activity

Activity
Ca Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)
{ZåZ{b{IV ‘| go YmVwAm| H$s H$m¡Z gr ì¶dñWm CZH$s g{H«$¶Vm Ho$ KQ>Vo hþE H«$‘ H$mo R>rH$-R>rH$ Xem©Vr h¡?
Cu
KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

Zn Ca Ca
Ca Pb Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)

4. Dramatic changes of body features associated with puberty are mainly because
of secretion of [1]
(A) oestrogen from testes and testosterone from ovary.
(B) estrogen from adrenal gland and testosterone from pituitary gland.
(C) testosterone from testes and estrogen from ovary.
(D) testosterone from thyroid gland and estrogen from pituitary gland.
¶m¡dZmaå^ go g§~§{YV eara Ho$ bjUm| ‘| ‘hËdnyU© n[adV©Z H$m H$maU hmoVm h¡ ‘w»¶V… ______
(A) d¥fUm| go EñQ´>moOZ Am¡a A§S>me¶ go Q>oñQ>moñQ>oam°Z H$m òdU&
(B) EoS´>moZb J«§{W go EñQ´>moOZ Am¡a {nQ²>¶yQ>ar J«§{W go Q>oñQ>moñQ>oam°Z H$m òdU&
(C) d¥fUm| go Q>oñQ>moñQ>oam°Z Am¡a A§S>me¶ go EñQ´>moOZ H$m òdU&
(D) Wm¶am°¶S> J«§{W go Q>oñQ>moñQ>oam°Z Ho$ Am¡a {nQ²>`yQ>ar J«§{W go EñQ´>moOZ H$m òdU&

63/OS/1–212-B] G-937 4 [ Contd......

5. Which one of the following oxides is neutral? [1]
{ZåZ{b{IV ‘| go H$m¡Z gm Am°³gmBS> CXmgrZ h¡?
(A) N 2O 3 (B) NO 2
(C) CO 2 (D) CO

6. A few substances are arranged in the increasing order of intermolecular forces
between their particles. Which one of the following represents a correct
arrangement? [1]
(A) Oil, air, salt (B) Air, salt, water
(C) Sugar, milk, oxygen (D) Nitrogen, water, stone
Hw$N> nXmWm] H$mo CZHo$ H$Um| Ho$ ‘ܶ A§VamAUwH$ ~bm| Ho$ ~‹T>Vo hþE H«$‘ ‘| ì¶dpñWV {H$¶m J¶m h¡& {ZåZ{b{IV
_| go H$m¡Z-gm H«$‘ ghr ì¶dñWm H$mo {Zê${nV H$aVm h¡?
(A) Vob, dm¶w, Z‘H$ (B) dm¶w, Z‘H$, Ob
(C) eH©$am, XÿY, Am°³grOZ (D) ZmBQ´>moOZ, Ob, nËWa

7. 5.0 × 1018 m can also be expressed as [1]

5.0 × 1018 m H$mo {ZåZ àH$ma go ^r ì`º$ {H$`m Om gH$Vm h¡

(A) 5.0 Zm (B) 5.0 Em

(C) 5.0 am (D) 5.0 ym

8. The derived SI unit of power is [1]

e{º$ H$m ì`wËnÞ SI _mÌH$ h¡

(A) m kg s–2 (B) m–2 kg s–3

(C) m2 kg s–3 (D) m2 kg s–2

63/OS/1–212-B] G-937 5 [ Contd......

9. A mango falls from a tree due to gravitational attraction between earth and mango.
If Fe is the magnitude of force exerted by the earth on the mango and Fm is the
magnitude of the force exerted by the mango on the earth, then _____. [1]
(A) Fe is very much greater than Fm.
(B) Fm is very much greater than Fe.
(C) Fe is only a little greater than Fm.
(D) Fe and Fm are equal.
EH$ Am_ H$m \$b AnZo d¥j go n¥Ïdr VWm Am_ Ho$ ~rM Jwê$ËdmH$f©U ~b Ho$ H$maU n¥Ïdr na {JaVm h¡& `{X n¥Ïdr
Ûmam Am_ na Amamo{nV ~b H$m n[a_mU Fe VWm Am_ Ûmam n¥Ïdr na Amamo{nV ~b H$m n[a_mU Fm h¡, Vmo _____
(A) Fm H$s VwbZm _| Fe ~hþV A{YH$ hmoVm h¡& (B) Fe H$s VwbZm _| Fm ~hþV A{YH$ hmoVm h¡&
(C) Fm H$s VwbZm _| Fe Ho$db WmoS>m A{YH$ hmoVm h¡& (D) Fe VWm Fm ~am~a hmoVo h¢&

10. The given velocity-time graph shows the motion of a cyclist. Find (i) its
acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 16
seconds. [2]
20
Velocity (ms–1)

15
10
5
0
4 8 12 16 20 24
Time (s)
{X¶m J¶m doJ-g‘¶ J«m’$ {H$gr gmB{H$b gdma H$s J{V H$mo Xem©Vm h¡& Bg J{V H$m (i) ËdaU (ii) doJ VWm
(iii) 16 goH§$S> ‘| gmB{H$b gdma Ûmam V¶ H$s JB© Xÿar kmV H$s{OE&

20
15
doJ (ms–1)

10
5
0
4 8 12 16 20 24

g_` (s)
63/OS/1–212-B] G-937 6 [ Contd......

11. Define relative humidity. Name the instrument used to measure relative humidity.
Is it necessary to measure the temperature also while measuring the relative
humidity? [2]
Amno{jH$ AmЩVm H$mo n[a^m{fV H$s{OE& Amno{jH$ AmЩVm H$mo ‘mnZo dmbo ¶§Ì H$m Zm‘ ~VmBE& ³¶m Amno{jH$
AmЩVm H$mo ‘mnVo g‘¶ Vmn H$m ‘mnZ ^r Amdí¶H$ hmoVm h¡?

12. State the mode of transmission of tuberculosis (T.B.). Mention its any two
symptoms. [2]
Vno{XH$ (T.B.) Ho$ g§H«$‘U H$s {d{Y ~VmBE& BgHo$ H$moB© Xmo bjU ^r ~VmBE&

13. Balance the following chemical equations and identify the type of chemical
reaction. [2]
{ZåZ{b{IV amgm¶{ZH$ g‘rH$aUm| H$mo g§Vw{bV H$s{OE VWm amgm¶{ZH$ A{^{H«$¶m Ho$ àH$ma H$mo nhMm{ZE&

(i) Fe 2O 3 + Al → Al2O 3 + Fe

(ii) Pb ( NO 3 )2 ⎯⎯ ⎯
Heat
→ PbO + NO 2 + O 2

14. State the SI units used while measuring [2]
(i) electric current while flowing through a heater.
(ii) temperature of a furnace.
(iii) length of a hockey play ground.
(iv) amount of substance.
{ZåZ{b{IV ‘mnZ H$aVo g‘¶ Cn¶moJ {H$¶o OmZo dmbo SI ‘mÌH$m| H$mo ~VmBE&
(i) {dÚwV hrQ>a ‘| ~hZo dmbr {dÚwV Ymam
(ii) {H$gr ^Å>r H$m Vmn
(iii) hm°H$s Ho$ Iob Ho$ ‘¡XmZ H$s bå~mB©
(iv) nXmW© H$s ‘mÌm

63/OS/1–212-B] G-937 7 [ Contd......

15. Name the scale on which the intensity of an earthquake is measured. Suggest
any three preventive measures which may be adopted in the event of an
earthquake. [2]
^yH$ån H$s Vrd«Vm H$mo ‘mnZo dmbo ¶ÝÌ H$m Zm‘ ~VmBE& ^yH$ån AmZo Ho$ g‘¶ gwajm Ho$ {bE AnZmE OmZo dmbo
H$moB© VrZ gwajm-Cnm¶ gwPmBE&

16. In the given figure of a cell, name the parts labelled as [2]

H$mo{eH$m Ho$ {XE JE {MÌ ‘| {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE&
(i) a, (ii) b, (iii) c and/Am¡a (iv) d
d
c

b

a

17. For making cake, we use baking powder. If we use baking soda instead of
baking powder in cake [4]
(i) how will it affect the taste of the cake and why?

(ii) how can baking soda be converted into baking powder? Give two other
uses of baking soda.

Ho$H$ ~ZmZo Ho$ {bE h‘ ~oqH$J nmC‹S>a H$m‘ ‘| boVo h¢& ¶{X h‘ ~oqH$J nmCS>a Ho$ ñWmZ na ~oqH$J gmoS>m Cn¶moJ
‘| bo Vmo -
(i) ¶h Ho$H$ Ho$ ñdmX H$mo H¡$go à^m{dV H$aoJm?
(ii) ~oqH$J gmoS>m H$mo ~oqH$J nmCS>a ‘| H¡$go n[ad{V©V {H$¶m Om gH$Vm h¡? ~oqH$J gmoS>m Ho$ Xmo Aݶ Cn¶moJ
{b{IE&

63/OS/1–212-B] G-937 8 [ Contd......

18. How is compost different from vermicompost? How will you make vermicompost
for your school garden? [4]
H$ånmoñQ> VWm d‘u H$ånmoñQ> ‘| ³¶m AÝVa h¡? AnZo {dÚmb¶ Ho$ ~JrMo Ho$ {bE Amn d‘u H$ånmoñQ> {H$g àH$ma
V¡¶ma H$a|Jo?

19. (i) Draw ray diagrams showing the image formation by a convex lens when
an object is placed -
(a) between optical centre and focus of the lens.
(b) at twice the focal length of the lens.
(ii) An object is placed perpendicular to the principal axis of a convex lens of
focal length 15 cm. The distance of the object from the lens is 20 cm. Find
the nature and position of the image.
[4]
(i) CÎmb b|g Ûmam à{Vq~~ ~ZVm Xem©Zo Ho$ {bE àH$me {H$aU AmaoI It{ME O~{H$ q~~ pñWV h¡ -
(a) b|g Ho$ àH$m{eH$ Ho$ÝÐ Am¡a ’$moH$g Ho$ ~rM&
(b) b|g H$s ’$moH$g Xÿar Ho$ XmoJwZo Xÿar na&
(ii) 15 cm ’$moH$g Xÿar Ho$ {H$gr CÎmb b|g H$s ‘w»¶ Aj Ho$ b§~dV EH$ q~~ H$mo aIm J¶m h¡& q~~ H$s
b|g go Xÿar 20 cm h¡& à{Vq~~ H$s àH¥${V Am¡a pñW{V kmV H$s{OE&

20. Draw a neat diagram of the transverse section of a flower and label the following
reproductive parts : [4]
(A) Anther (B) Filament
(C) Ovary (D) Stigma
{H$gr nwîn H$s AZwàñW H$mQ> H$m ñdÀN> {MÌ It{ME Am¡a BgHo$ {ZåZ{b{IV OZZ A§Jm| H$mo Zm‘m§{H$V H$s{OE …
(A) nw§Ho$ga (B) V§Vw
(C) A§S>me¶ (D) d{V©H$m

63/OS/1–212-B] G-937 9 [ Contd......

21. What is meant by genetic disorders? Name the type of chromosome on which
defective genes causing haemophilia and colour-blindness are located. Why is
haemophilia and colour-blindness found mostly in boys and not in girls? Explain.
[4]
AmZwd§{eH$ {dH$mam| go ³¶m VmËn¶© h¡? Cg JwUgyÌ Ho$ àH$ma H$m Zm‘ ~VmBE {Og na hr_mo\$s{b`m VWm a§Jm§YVm
Ho$ XmofnyU© OrZ pñWV hmoVo h¢& hr‘mo’$s{b¶m VWm a§Jm§YVm àm¶… bS>H$m| ‘| hr ³¶m| nmB© OmVr h¡, b‹S>{H$¶m| ‘| ³¶m|
Zht? ì¶m»¶m H$s{OE&

22. What is meant by an ecosystem? Taking the example of a pond explain the
terms abiotic and biotic components of the ecosystem. [4]
nm[aVÝÌ go ³¶m VmËn¶© hmoVm h¡? Vmbm~ H$m CXmhaU boH$a nm[aVÝÌ Ho$ O¡{dH$ VWm AO¡{dH$ KQ>H$m| H$s
ì¶m»¶m H$s{OE&

23. Explain the process of covalent bond formation with the help of an example.
Identify the covalent bonds present in the following molecules : [4]
{H$gr EH$ CXmhaU H$s ghm¶Vm go ì¶m»¶m H$s{OE {H$ ghg§¶moOr Am~§Y H¡$go ~ZVm h¡? {ZåZ{b{IV AUwAm|
‘| CnpñWV ghg§¶moOr Am~§Ymo H$mo nhMm{ZE …
(i) N2 (ii) Cl2
(iii) O 2 (iv) HCl

24. State the postulates of Bohr's model of an atom. How does Bohr's model of
atom remove the limitations of Rutherford's model related to stability of atom
and the distribution of electrons around the nucleus? [4]
~moa Ho$ na‘mUw ‘m°S>b H$s AdYmaUmE§ ~VmBE& ~moa H$m na‘mUw ‘m°S>b aXa’$moS>© Ho$ ‘m°S>b H$s na‘mUw H$s
pñWaVm VWm Zm{^H$ Ho$ Mmam| Amoa Bbo³Q´>m°Zm| Ho$ {dVaU go g§~§{YV H${‘¶m| H$mo H¡$go Xÿa H$a nmVm h¡?

25. Water sprinkler used for grass lawns begins to rotate as soon as the water is
supplied. Name and state the law of motion on which it works. State three
significant features of this law. [4]
Kmg Ho$ ‘¡XmZ ‘| Ob H$m {N>‹S>H$md H$aZo dmbm ’$ìdmam, Ob H$s Amny{V© Ama§^ hmoVo hr Ky‘Zo bJVm h¡& J{V Ho$
Cg {Z¶‘ H$m Zm‘ Am¡a H$WZ {b{IE {Og na ¶h ’$ìdmam H$m¶© H$aVm h¡& Bg {Z¶‘ Ho$ VrZ ‘hËdnyU© bjU
~VmBE&

63/OS/1–212-B] G-937 10 [ Contd......

26. Draw the diagram of respiratory system in human beings and label the following
parts : [4]
(a) Glottis
(b) Trachea
(c) Lungs
(d) Bronchioles
‘mZd ‘| ídgZVÝÌ H$m {MÌ ~ZmBE Am¡a {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE …
(a) H§$R>Ûma
(b) ídmgZbr
(c) ’o$’$‹S>o
(d) ídg{ZH$mE§

27. (i) Derive a relation for the equivalent resistance of three resistors connected in
parallel.

(ii) Three resistors of resistances 10Ω, 15Ω and 30Ω respectively are connected
in parallel to a battery of 12V. Calculate

(a) the total circuit resistance and

(b) the current through the resistor of resistance 10Ω.
[4]

(i) g‘mÝVa H«$‘ ‘| Ow‹S>o VrZ à{VamoYH$m| Ho$ n[aUm‘r à{VamoY Ho$ {bE 춧OH$ ì¶wËnÞ H$s{OE&
(ii) H«$‘e… 10Ω, 15Ω VWm 30Ω Ho$ VrZ à{VamoYH$ 12V H$s ~¡Q>ar Ho$ gmW g‘mÝVa H«$‘ ‘| g§¶mo{OV
{H$E JE h¢& n[aH${bV H$s{OE -
(a) n[anW ‘| n[aUm‘r à{VamoY&

(b) 10Ω Ho$ à{VamoYH$ go ~hZo dmbr {dÚwV Ymam&

63/OS/1–212-B] G-937 11 [ Contd......

28. State any three merits and three defects of Mendeleev's periodic table. [6]

‘oÝS>obr’$ AmdV© gmaUr Ho$ H$moB© VrZ JwU Am¡a VrZ Xmof ~VmBE&

29. What is meant by wind energy? Describe the working of a windmill. List three
advantages and three limitations of wind energy. [6]

ndZ D$Om© go Š`m A{^àm¶ h¡? ndZM¸$s H$s H$m¶©àUmbr H$m dU©Z H$s{OE& ndZ D$Om© Ho$ VrZ bm^ VWm
VrZ gr‘mE± ~VmBE&

30. Name the three amorphous forms of carbon. How are they formed? Write one
use of each form. [6]

H$m~©Z Ho$ VrZ gyú‘ ñ’$Q>r` ê$nm| Ho$ Zm‘ ~VmBE& BZH$m {Z‘m©U H¡$go hmoVm h¡? à˶oH$ ê$n H$m EH$-EH$ Cn¶moJ
{b{IE&



63/OS/1–212-B] G-937 12

This Question Paper consists of 30 questions and 12 printed pages.
Bg àíZ-nÌ _| 30 àíZ VWm 12 ‘w{ÐV n¥ ð > h¢ &
Sl. No.

Roll No. Code No.
AZw H « $ _m§ H $ H$mo S > Z§ .
63/OS/1
SCIENCE AND TECHNOLOGY
Set / go Q > C
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Day and Date of Examination :
(narjm H$m {XZ d {XZm§ H $)
Signature of Invigilators : 1.
({ZarjH$m| Ho $ hñVmja)
2.

General Instructions :

1. Candidate must write his/her Roll Number on the first page of the Question Paper.

2. Please check the Question Paper to verify that the total pages and the total number of questions
contained in the Question Paper are the same as those printed on the top of the first page. Also check
to see that the questions are in sequential order.

3. For the objective type of questions, you have to choose any one of the four alternatives given in the
question i.e. (A), (B), (C) and (D) and indicate your correct answer in the Answer-Book given to you.

4. All the questions including objective type questions are to be answered within the allotted time and
no separate time limit is fixed for answering objective type questions.

5. Making any identification mark in the Answer-Book or writing Roll Number anywhere other than
the specified places will lead to disqualification of the candidate.

6. Write your Question Paper Code No. 63/OS/1, Set - C on the Answer-Book.

7. (a) The Question Paper is in English/Hindi medium only. However, if you wish, you can answer
in any one of the languages listed below :

English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi, Odia,
Gujarati, Konkani, Manipuri, Assamese, Nepali, Kashmiri, Sanskrit and Sindhi.

You are required to indicate the language you have chosen to answer in the box provided in
the Answer-Book.

(b) If you choose to write the answer in the language other than Hindi and English, the
responsibility for any errors/mistakes in understanding the questions will be yours only.

63/OS/1–212-C] G-937 1 [ Contd......

gm_mÝ` AZwXoe :

1. narjmWu àíZ-nÌ Ho$ nhbo n¥ð> na AnZm AZwH«$‘m§H$ Adí¶ {bI|&

2. H¥$n¶m àíZ-nÌ H$mo Om±M b| {H$ àíZ-nÌ Ho$ Hw$b n¥ð>m| VWm àíZm| H$s CVZr hr g§»¶m h¡ {OVZr àW‘ n¥ð> Ho$ g~go D$na N>nr h¡& Bg
~mV H$s Om±M ^r H$a b| {H$ àíZ H«${‘H$ ê$n ‘| h¢&

3. dñVw{Zð> àíZm| _| AmnH$mo Mma {dH$ënm| (A), (B), (C) VWm (D) _| go H$moB© EH$ CÎma MwZZm h¡ VWm Xr JB© CÎma-nwpñVH$m _| Amn ghr
CÎma {b{IE&

4. dñVw{Zð> àíZm| Ho$ gmW-gmW g^r àíZm| Ho$ CÎma {ZYm©[aV Ad{Y Ho$ ^rVa hr XoZo h¢& dñVw{Zð> àíZm| Ho$ {bE AbJ go g_` Zht {X`m
OmEJm&

5. CÎma-nwpñVH$m ‘| nhMmZ-{M• ~ZmZo AWdm {Z{X©ï> ñWmZm| Ho$ A{V[aº$ H$ht ^r AZwH«$‘m§H$ {bIZo na narjmWu H$mo A¶mo½¶ R>ham¶m
Om¶oJm&

6. AnZr CÎma-nwpñVH$m na àíZ-nÌ H$r H$moS> g§»¶m 63/OS/1, goQ> - C {bI|&

7. (H$) àíZ-nÌ Ho$db A§Jo«Or/qhXr ‘mܶ‘ ‘| h¡& {’$a ^r, ¶{X Amn Mmh| Vmo ZrMo Xr JB© {H$gr EH$ ^mfm ‘| CÎma Xo gH$Vo h¢ :
A§J«oOr, qhXr, CXÿ©, n§Om~r, ~±Jbm, V{‘b, ‘b¶mb‘, H$ÝZ‹S>, VobwJy, ‘amR>r, C{‹S>¶m, JwOamVr, H$m|H$Ur, ‘{Unwar, Ag{‘¶m,
Zonmbr, H$í‘rar, g§ñH¥$V Am¡a qgYr&

H¥$n¶m CÎma-nwpñVH$m ‘| {XE JE ~m°³g ‘| {bI| {H$ Amn {H$g ^mfm ‘| CÎma {bI aho h¢&

(I) ¶{X Amn qhXr Ed§ A§J«oOr Ho$ A{V[a³V {H$gr Aݶ ^mfm ‘| CÎma {bIVo h¢, Vmo àíZm| H$mo g‘PZo ‘| hmoZo dmbr Ìw{Q>¶m|/Jb{V¶m|
H$s {Oå‘oXmar Ho$db AmnH$s hmoJr&

63/OS/1–212-C] G-937 2 [ Contd......

SCIENCE AND TECHNOLOGY
({dkmZ Ed§ àm¡Úmo{JH$s)
(212)
Time : 2 ½ Hours] [Maximum Marks : 85
g_` : 2 ½ KÊQ>o] [nyUmªH$ : 85

Note : (i) All questions are compulsory.
(ii) Marks are indicated against each question.

{ZX} e : (i) g^r àíZ A{Zdm`© h¢&
(ii) àË`oH$ àíZ Ho$ A§H$ CgHo$ gm_Zo {XE JE h¢&

1. Iodine is necessary for the synthesis of hormone - [1]
(A) oestrogen (B) thyroid
(C) insulin (D) testosterone
Am¶moS>rZ {H$g hm°‘m}Z Ho$ g§íbofU Ho$ {bE Amdí¶H$ h¡?
(A) EñQ´>moOZ (B) Wm¶am°BS>
(C) BÝgw{bZ (D) Q>oñQ>moñQ>oam°Z

2. Read the following statements carefully and select the group of statements which
are correct? [1]
(i) Non-metals are non-sonorous and ductile.
(ii) Non-metals are bad conductor of electricity and non-sonorous.
(iii) Metals are malleable and good conductor of heat.
(iv) Metals are non-sonorous and ductile.
(A) (i) and (ii) (B) (i) and (iii)
(C) (ii) and (iii) (D) (ii) and (iv)
{ZåZ{b{IV H$WZm| H$mo ܶmZ go n{T>E Am¡a V¶ H$s{OE {H$ BZ‘| go g˶ H$WZm| H$m g‘yh H$m¡Z gm h¡?
(i) AYmVw Üdm{ZH$ (gmoZmoag) Zht hmoVo Am¡a Vݶ hmoVo h¢&
(ii) AYmVw {dÚwV Ho$ Hw$MmbH$ hmoVo h¢ Am¡a Üdm{ZH$ Zht hmoVo&
(iii) YmVw AmKmVdܶ© hmoVo h¢ Am¡a `o Vmn Ho$ gwMmbH$ hmoVo h¢&
(iv) YmVw Üdm{ZH$ Zht hmoVo Am¡a Vݶ hmoVo h¢&
(A) (i) VWm (ii) (B) (i) VWm (iii)
(C) (ii) VWm (iii) (D) (ii) VWm (iv)

63/OS/1–212-C] G-937 3 [ Contd......

3. A mango falls from a tree due to gravitational attraction between earth and mango.
If Fe is the magnitude of force exerted by the earth on the mango and Fm is the
magnitude of the force exerted by the mango on the earth, then _____. [1]

(A) Fe is very much greater than Fm.

(B) Fm is very much greater than Fe.

(C) Fe is only a little greater than Fm.

(D) Fe and Fm are equal.

EH$ Am_ H$m \$b AnZo d¥j go n¥Ïdr VWm Am_ Ho$ ~rM Jwê$ËdmH$f©U ~b Ho$ H$maU n¥Ïdr na {JaVm h¡& `{X n¥Ïdr
Ûmam Am_ na Amamo{nV ~b H$m n[a_mU Fe VWm Am_ Ûmam n¥Ïdr na Amamo{nV ~b H$m n[a_mU Fm h¡, Vmo _____

(A) Fm H$s VwbZm _| Fe ~hþV A{YH$ hmoVm h¡& (B) Fe H$s VwbZm _| Fm ~hþV A{YH$ hmoVm h¡&

(C) Fm H$s VwbZm _| Fe Ho$db WmoS>m A{YH$ hmoVm h¡& (D) Fe VWm Fm ~am~a hmoVo h¢&

4. A body is falling from a height of 100m. After it has fallen through a distance of
25m from the top, it will possess _____. [1]

(A) only potential energy

(B) half potential and half kinetic energy

(C) more potential and less kinetic energy

(D) more kinetic and less potential energy

H$moB© qnS> 100m H$s D±$MmB© go {Ja ahm h¡& D$na go 25m H$s Xÿar VH$ {JaZo na Bg_| {Z{hV D$Om© hmoJr ____

(A) Ho$db pñW{VO D$Om©& (B) AmYr pñW{VO Am¡a AmYr J{VO D$Om©&

(C) A{YH$ pñW{VO D$Om© Am¡a H$_ J{VO D$Om©& (D) A{YH$ J{VO D$Om© Am¡a H$_ pñW{VO D$Om©

63/OS/1–212-C] G-937 4 [ Contd......

5. Which of the following arrangement of metals shows the correct decreasing
order of their reactivity? [1]
Zn Cu Ca Ca

Decreasing
Decreasing

Decreasing

Decreasing
Activity
Pb
Activity

Activity

Activity
Ca Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)
{ZåZ{b{IV ‘| go YmVwAm| H$s H$m¡Z gr ì¶dñWm CZH$s g{H«$¶Vm Ho$ KQ>Vo hþE H«$‘ H$mo R>rH$-R>rH$ Xem©Vr h¡?
Cu
KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm

KQ>Vr hþB© g{H«$`Vm
Zn Ca Ca
Ca Pb Zn Pb
Cu Zn Pb Cu
Pb Ca Cu Zn
↓ ↓ ↓ ↓
(A) (B) (C) (D)

6. 5.0 × 1018 m can also be expressed as [1]
5.0 × 1018 m H$mo {ZåZ àH$ma go ^r ì`º$ {H$`m Om gH$Vm h¡
(A) 5.0 Zm (B) 5.0 Em
(C) 5.0 am (D) 5.0 ym ©

7. Read the following statements carefully and select the group of incorrect statements
about an atom? [1]
(i) Atoms can exist independently in free state.
(ii) Atoms are the basic units from which molecules and ions are formed.
(iii) Some atoms are not neutral in nature.
(iv) Atoms aggregate in large numbers to form the matter that we can see, feel
or touch.
(A) (i) and (ii) (B) (i) and (iii)
(C) (ii) and (iii) (D) (i) and (iv)

EH$$ na_mUw Ho$ {bE {ZåZ{b{IV H$WZm| H$mo gmdYmZr go n{T>E Am¡a CZ H$WZm| H$m g_yh Mw{ZE Omo gË` Zht h¢?
(i) na_mUw AHo$bo-AHo$bo ñdVÝÌ ApñVËd _| ah nmVo h¢&
(ii) na_mUw _yb BH$mB`m± h¢ {OZgo AUwAm| Am¡a Am`Zm| H$m {Z_m©U hmoVm h¡&
(iii) Hw$N> na_mUw CXmgrZ àH¥${V Ho$ Zht hmoVo h¢&
(iv) na_mUw ~‹S>r g§»`m _| nañna Ow‹S>H$a nXmW© H$m {Z_m©U H$aVo h¢, {Ogo h_ XoI, AZw^d `m ñne© H$a
gH$Vo h¢&
(A) (i) VWm (ii) (B) (i) VWm (iii)
(C) (ii) VWm (iii) (D) (i) VWm (iv)

63/OS/1–212-C] G-937 5 [ Contd......

8. Salt is obtained from sea water by the process of [1]
(A) evaporation (B) filtration
(C) distillation (D) crystallization
g‘wÐ Ho$ nmZr go Z‘H$ àmá H$aZo dmbr à{H«$¶m H$m Zm‘ h¡
(A) dmînrH$aU (B) {Zñ¶§XZ
(C) AmgdZ (D) {H«$ñQ>brH$aU
9. The derived SI unit of power is [1]
e{º$ H$m ì`wËnÞ SI _mÌH$ h¡
(A) m kg s–2 (B) m–2 kg s–3
(C) m2 kg s–3 (D) m2 kg s–2
10. The given figure shows different stages of mitosis. Name the stages labelled as
a, b, c and d. [2]
{XE JE {MÌ ‘| H$mo{eH$m Ho$ g‘gyÌr {d^mOZ H$s {d{^Þ AdñWmAm| H$mo Xem©¶m J¶m h¡& Bg {MÌ ‘| a, b, c
VWm d Ûmam XemB© JB© AdñWmAm| H$mo Zm‘m§{H$V H$s{OE&

a

b

c

d

63/OS/1–212-C] G-937 6 [ Contd......

11. State the mode of transmission of malaria. Mention its any two symptoms. [2]

‘bo[a¶m H$s g§H«$‘U {d{Y ~VmBE& BgHo$ H$moB© Xmo bjU {b{IE&

12. Define relative humidity. Name the instrument used to measure relative humidity.
Is it necessary to measure the temperature also while measuring the relative
humidity? [2]

Amno{jH$ AmЩVm H$mo n[a^m{fV H$s{OE& Amno{jH$ AmЩVm H$mo ‘mnZo dmbo ¶§Ì H$m Zm‘ ~VmBE& ³¶m Amno{jH$
AmЩVm H$mo ‘mnVo g‘¶ Vmn H$m ‘mnZ ^r Amdí¶H$ hmoVm h¡?

13. Name the scale on which the intensity of an earthquake is measured. Suggest
any three preventive measures which may be adopted in the event of an
earthquake. [2]

^yH$ån H$s Vrd«Vm H$mo ‘mnZo dmbo ¶ÝÌ H$m Zm‘ ~VmBE& ^yH$ån AmZo Ho$ g‘¶ gwajm Ho$ {bE AnZmE OmZo dmbo
H$moB© VrZ gwajm-Cnm¶ gwPmBE&

14. Balance the following chemical equations and identify the type of chemical
reaction. [2]

{ZåZ{b{IV amgm¶{ZH$ g‘rH$aUm| H$mo g§Vw{bV H$s{OE VWm amgm¶{ZH$ A{^{H«$¶m Ho$ àH$ma H$mo nhMm{ZE&

(i) Fe 2O 3 + Al → Al2O 3 + Fe

(ii) Pb ( NO 3 )2 ⎯⎯ ⎯
Heat
→ PbO + NO 2 + O 2

63/OS/1–212-C] G-937 7 [ Contd......

15. The given velocity-time graph shows the motion of a cyclist. Find (i) its
acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 16
seconds. [2]
20
Velocity (ms–1) 15
10
5
0
4 8 12 16 20 24
Time (s)

{X¶m J¶m doJ-g‘¶ J«m’$ {H$gr gmB{H$b gdma H$s J{V H$mo Xem©Vm h¡& Bg J{V H$m (i) ËdaU (ii) doJ VWm
(iii) 16 goH§$S> ‘| gmB{H$b gdma Ûmam V¶ H$s JB© Xÿar kmV H$s{OE&

20
15
doJ (ms–1)

10
5
0
4 8 12 16 20 24

g_` (s)

16. State the SI units used while measuring [2]
(i) electric current while flowing through a heater.
(ii) temperature of a furnace.
(iii) length of a hockey play ground.
(iv) amount of substance.
{ZåZ{b{IV ‘mnZ H$aVo g‘¶ Cn¶moJ {H$¶o OmZo dmbo SI ‘mÌH$m| H$mo ~VmBE&
(i) {dÚwV hrQ>a ‘| ~hZo dmbr {dÚwV Ymam
(ii) {H$gr ^Å>r H$m Vmn
(iii) hm°H$s Ho$ Iob Ho$ ‘¡XmZ H$s bå~mB©
(iv) nXmW© H$s ‘mÌm

63/OS/1–212-C] G-937 8 [ Contd......

17. How is compost different from vermicompost? How will you make vermicompost
for your school garden? [4]

H$ånmoñQ> VWm d‘u H$ånmoñQ> ‘| ³¶m AÝVa h¡? AnZo {dÚmb¶ Ho$ ~JrMo Ho$ {bE Amn d‘u H$ånmoñQ> {H$g àH$ma
V¡¶ma H$a|Jo?

18. What is meant by genetic disorders? Name the type of chromosome on which
defective genes causing haemophilia and colour-blindness are located. Why is
haemophilia and colour-blindness found mostly in boys and not in girls? Explain.
[4]

AmZwd§{eH$ {dH$mam| go ³¶m VmËn¶© h¡? Cg JwUgyÌ Ho$ àH$ma H$m Zm‘ ~VmBE {Og na hr_mo\$s{b`m VWm a§Jm§YVm
Ho$ XmofnyU© OrZ pñWV hmoVo h¢& hr‘mo’$s{b¶m VWm a§Jm§YVm àm¶… bS>H$m| ‘| hr ³¶m| nmB© OmVr h¡, b‹S>{H$¶m| ‘| ³¶m|
Zht? ì¶m»¶m H$s{OE&

19. (i) Derive a relation for the equivalent resistance of three resistors connected in
parallel.

(ii) Three resistors of resistances 10Ω, 15Ω and 30Ω respectively are connected
in parallel to a battery of 12V. Calculate

(a) the total circuit resistance and

(b) the current through the resistor of resistance 10Ω.
[4]

(i) g‘mÝVa H«$‘ ‘| Ow‹S>o VrZ à{VamoYH$m| Ho$ n[aUm‘r à{VamoY Ho$ {bE 춧OH$ ì¶wËnÞ H$s{OE&
(ii) H«$‘e… 10Ω, 15Ω VWm 30Ω Ho$ VrZ à{VamoYH$ 12V H$s ~¡Q>ar Ho$ gmW g‘mÝVa H«$‘ ‘| g§¶mo{OV
{H$E JE h¢& n[aH${bV H$s{OE -
(a) n[anW ‘| n[aUm‘r à{VamoY&

(b) 10Ω Ho$ à{VamoYH$ go ~hZo dmbr {dÚwV Ymam&

63/OS/1–212-C] G-937 9 [ Contd......

20. What is meant by an ecosystem? Taking the example of a pond explain the
terms abiotic and biotic components of the ecosystem. [4]
nm[aVÝÌ go ³¶m VmËn¶© hmoVm h¡? Vmbm~ H$m CXmhaU boH$a nm[aVÝÌ Ho$ O¡{dH$ VWm AO¡{dH$ KQ>H$m| H$s
ì¶m»¶m H$s{OE&

21. How is Rutherford's model of an atom different from that of Thomson's atomic
model? State any two drawbacks of Rutherford's model of atom. [4]
aXa’$moS>© H$m na‘mUw ‘m°S>b, Wm‘gZ Ho$ na‘mUw ‘m°S>b go {H$g àH$ma {^Þ h¡? aXa’$moS>© Ho$ na‘mUw ‘m°S>b H$s
H$moB© Xmo H${‘¶m± ~VmBE&

22. Draw a neat diagram showing fertilization in plants and label the following
parts. [4]
(a) Stigma (b) Pollen tube
(c) Ovary wall (d) Secondary nucleus
nm¡Ym| ‘| {ZfoMZ Xem©Zo Ho$ {bE EH$ ñdÀN> {MÌ ~ZmBE Am¡a {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE&
(a) d{V©H$mJ« (b) namJ Zbr
(c) A§S>me¶ {^{Îm (d) {ÛVr¶H$ Ho$ÝÐH$

23. Draw the diagram of respiratory system in human beings and label the following
parts : [4]
(a) Glottis
(b) Trachea
(c) Lungs
(d) Bronchioles
‘mZd ‘| ídgZVÝÌ H$m {MÌ ~ZmBE Am¡a {ZåZ{b{IV ^mJm| H$mo Zm‘m§{H$V H$s{OE …
(a) H§$R>Ûma
(b) ídmgZbr
(c) ’o$’$‹S>o
(d) ídg{ZH$mE§

63/OS/1–212-C] G-937 10 [ Contd......

24. Explain the process of covalent bond formation with the help of an example.
Identify the covalent bonds present in the following molecules : [4]
{H$gr EH$ CXmhaU H$s ghm¶Vm go ì¶m»¶m H$s{OE {H$ ghg§¶moOr Am~§Y H¡$go ~ZVm h¡? {ZåZ{b{IV AUwAm|
‘| CnpñWV ghg§¶moOr Am~§Ymo H$mo nhMm{ZE …
(i) N2 (ii) Cl2
(iii) O 2 (iv) HCl

25. For making cake, we use baking powder. If we use baking soda instead of
baking powder in cake [4]
(i) how will it affect the taste of the cake and why?
(ii) how can baking soda be converted into baking powder? Give two other
uses of baking soda.
Ho$H$ ~ZmZo Ho$ {bE h‘ ~oqH$J nmC‹S>a H$m‘ ‘| boVo h¢& ¶{X h‘ ~oqH$J nmCS>a Ho$ ñWmZ na ~oqH$J gmoS>m Cn¶moJ
‘| bo Vmo -
(i) ¶h Ho$H$ Ho$ ñdmX H$mo H¡$go à^m{dV H$aoJm?
(ii) ~oqH$J gmoS>m H$mo ~oqH$J nmCS>a ‘| H¡$go n[ad{V©V {H$¶m Om gH$Vm h¡? ~oqH$J gmoS>m Ho$ Xmo Aݶ Cn¶moJ
{b{IE&

26. (i) Draw ray diagrams showing the image formation by a convex lens when
an object is placed -
(a) between optical centre and focus of the lens.
(b) at twice the focal length of the lens.
(ii) An object is placed perpendicular to the principal axis of a convex lens of
focal length 15 cm. The distance of the object from the lens is 20 cm. Find
the nature and position of the image.
[4]
(i) CÎmb b|g Ûmam à{Vq~~ ~ZVm Xem©Zo Ho$ {bE àH$me {H$aU AmaoI It{ME O~{H$ q~~ pñWV h¡ -
(a) b|g Ho$ àH$m{eH$ Ho$ÝÐ Am¡a ’$moH$g Ho$ ~rM&
(b) b|g H$s ’$moH$g Xÿar Ho$ XmoJwZo Xÿar na&
(ii) 15 cm ’$moH$g Xÿar Ho$ {H$gr CÎmb b|g H$s ‘w»¶ Aj Ho$ b§~dV EH$ q~~ H$mo aIm J¶m h¡& q~~ H$s
b|g go Xÿar 20 cm h¡& à{Vq~~ H$s àH¥${V Am¡a pñW{V kmV H$s{OE&

63/OS/1–212-C] G-937 11 [ Contd......

27. Water sprinkler used for grass lawns begins to rotate as soon as the water is
supplied. Name and state the law of motion on which it works. State three
significant features of this law. [4]

Kmg Ho$ ‘¡XmZ ‘| Ob H$m {N>‹S>H$md H$aZo dmbm ’$ìdmam, Ob H$s Amny{V© Ama§^ hmoVo hr Ky‘Zo bJVm h¡& J{V Ho$
Cg {Z¶‘ H$m Zm‘ Am¡a H$WZ {b{IE {Og na ¶h ’$ìdmam H$m¶© H$aVm h¡& Bg {Z¶‘ Ho$ VrZ ‘hËdnyU© bjU
~VmBE&

28. What are fossil fuels? How are they formed? State three advantages and three
disadvantages of using fossil fuels. [6]

Ordmí‘ BªYZ ³¶m hmoVo h¢? BZH$m {Z‘m©U H¡$go hmoVm h¡? Ordmí‘ BªYZ Cn¶moJ H$aZo Ho$ VrZ bm^ d VrZ H${‘¶m±
~VmBE&

29. Name the three amorphous forms of carbon. How are they formed? Write one
use of each form. [6]

H$m~©Z Ho$ VrZ gyú‘ ñ’$Q>r` ê$nm| Ho$ Zm‘ ~VmBE& BZH$m {Z‘m©U H¡$go hmoVm h¡? à˶oH$ ê$n H$m EH$-EH$ Cn¶moJ
{b{IE&

30. State any three merits and three defects of Mendeleev's periodic table. [6]

‘oÝS>obr’$ AmdV© gmaUr Ho$ H$moB© VrZ JwU Am¡a VrZ Xmof ~VmBE&



63/OS/1–212-C] G-937 12