10 Science
10 Science
10 Science
05/A
[Total No. of Questions: 19] [Total No. of Printed Pages: 14]
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2020-21
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SCIENCE (Theory)
(Punjabi and English Versions)
(Moring Session)
Time allowed: Three hours Maximum marks: 80
(Punjabi Version)
not:
i) AwpxI au`qr-p`qrI dy tweItl pMny 'qy ivSw-kof/pypr-kof vwly Kwny iv`c ivSw-kof/pypr-kof 05/A
zrUr drj kro jI[
ii) au`qr-p`qrI lYNdy hI ies dy pMny igx ky dyK lE ik ies iv`c tweItl sihq 26 pMny hn Aqy TIk
kRmvwr hn[
iii) au`qr-p`qrI iv`c KwlI pMnw/pMny C`fx qoN bwAd h`l kIqy gey pRSn/pRSnW dw mulWkx nhIN kIqw
jwvygw[
iv) swry Bwg zrUrI hn[
v) pRSn p`qr 4 BwgW (a,A,e,s) iv`c vMifAw igAw hY[
vi) Bwg-a dw hr pRSn 1 AMk, Bwg-A dw 2 AMk, Bwg-e dw 3 AMk Aqy Bwg-s dw 5 AMkW dw hY[
vii) Bwg-s dy pRSn nMbr 17,18 Aqy 19 iv`coN ie`k-ie`k pRSn dw au`qr idau, kul iqMn pRSn krny hn[
viii) au`qr sMKyp Aqy FukvyN idau[ loV Anuswr AMikq ic`qr bxwE[
ix) pRSn-p`qr qy bxy ic`qrW nUM au`qr pusqkW qy bxwaux dI loV nhIN[ kyvl loVINdw au`qr idau[
(a) kw`rnIAw
(A) Awieirs
(e) puqlI
(s) rYitnw
XXIII. nyqr lYNnz dI Poks dUrI iv`c pirvrqn kIqw jWdw hY-
(A) iksy kuMflI qoN ibjleI Dwrw pRvwihq hox dy kwrn cuMbkI Kyqr auqpMn krn dI pRikirAw
hY[
(e) kuMflI Aqy cuMbk dy iv`c swpyiKk gqI dy kwrn kuMflI iv`c pRyirq ibjleI Dwrw pYdw
krnw[
(s) iksy ibjleI motr dI kuMflI nUM Gumwaux dI pRikirAw hY[
XXVII. iksy AC jrnytr Aqy DC jnrytr iv`c ie`k mUl AMqr hY ik -
(a) AC jnrytr iv`c ibjlI cuMbk huMdw hY jdoN ik DC jnrytr iv`c sQweI cuMbk huMdw hY[
(a) bwzwr jWdy smyN smwn lYx leI k`pVy dw QYlw lY jwxw[
(A) kwrj smwpq hox qy lweIt (blb) Aqy p`Ky dw siv`c bMd krnw[
(e) mW duAwrw skUtr qy skUl C`fx dI bjwey quhwfw skUl nUM pYdl jwxw[
(s) auprokq swry[
Bwg-(A) (AMk: 20)
2. iksy vsqU dw Gol sPydI krn leI aupXog kIqw jWdw hY[
3. plwstr AwP pYirs nUM nmIN roDk brqn iv`c r`Kxw cwhIdw hY[ikauN ?
4. kwrbn dy auh do gux ikhVy hn ijnHW kwrn swfy Awly-duAwly cwr cuPyry kwrbn XOigkW dI v`fI
sMiKAw idKweI idMdI hY?
5. inaUlYNf dy AStk isDWq dIAW kI kmIAW sn?
6. idKwey gey ic`qr iv`c 1 Aqy 2 nUM lybl kro-
7. iBMnqwvW dy pYdw hox nwl iksy spISIj dI hoNd ikvyN v`D jWdI hY ?
8. ie`k golwkwr drpx dw ArD ivAws 20 hY[ aus dI Poks dUrI kI hovygI ?
16. Ejon prq dI hwnI swfy leI icMqw dw ivSw hY[ ies hwnI nUM G`t krn leI kI kdm auTwey gey
hn ?
(iv) all
III. What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.
V. A solution reacts with crushed egg-shells to give a gas that turns lime-water milky.The solution
contains
VI. Which one of the following types of medicines is used for treating indigestion?
VIII. Food cans are coated with tin and not with Zinc because
(b) Aldehyde.
(c) Ketone.
(d) Alcohol.
XI. Which of the following statements is not a correct statement about the trends when going from
left to right across the periods of periodic Table.
XII. Element X forms a chloride with the formula XCl2 , which is a solid with a high melting
point. X would most likely be in the same group of the Periodic Table as
XIII. The kidneys in human beings are a part of the system for
(a) Carbon dioxide and Water. (b) Chlorophyll. (c) Sunlight. (d) All of the
above.
XV. Which of the following is not a part of the female reproductive system in human beings?
(a) Ovary
(b) Uterus
(b) a Chimpanzee.
(c) a Spider.
(d) a Bacterium.
XIX. Where an object should be placed in front of a convex lens to get a real image of the size of
the object?
(c) At infinity
(d) Between the optical centre of the lens and its principal focus.
XX. No matter how far you stand from a mirror, your image appears erect. The mirror is likely
to be
XXI. Which of the following lenses would you prefer to use while reading small letters found in a
dictionary?
XXIII. The change in focal length of an eye lens is caused by the action of the
XXV. An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power
consumed will be –
(b) the process of generating magnetic field due to a current passing through a coil.
(c) producing induced current in a coil due to relative motion between a magnet and the coil.
(d) AC generator has slip rings while the DC generator has a commutator.
(c) Walking to school instead of getting your mother to drop you on her scooter
4. What are the two properties of carbon which lead to the huge number of carbon compounds we see
around us ?
8. The radius of curvature of a spherical mirror is 20 cm. What is its focal length ?
12. Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
16. Why is the damage to the ozone layer a cause for concern? What steps are being taken to limit this
damage?
Or
What is the (1) Maximum (2) Minimum resistance that can be secured by combination of four
coils of resistances 4Ω, 8 Ω, 12Ω and 24Ω? (5)
18. (a) Write three differences between sexual and asexual reproduction (3)
19. Differentiate between metals and non-metals on the basis of their physical and chemical
properties. (5)
Or
(a) How will you prevent the rusting of iron? Suggest two ways (3)
(b) Name a non-metal, which is:- (2)
1) A conductor of electricity
2) Lustrous