Science Kan Eng

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e izj I Model question paper - IPART - I

PHYSICS & CHEMISTRYsv v gAi

For Each multiple choice question four alternatives are given. Out of these alternatives choose the correct

answer and write the answer in the space provided

1. Due to heavy traffic near the school the department of traffic police wants to install

automatic traffic lights. This can be done by using the Principle of 1 x 10 = 10a) Raman effect b) Radiography c)Holography d) Photoelectric effect

Ai AZg zlu e EgzjAz AZj g AiAZv U P Eazg.

Ez iq GAiV vvC) gi ju D) bAii A E) U F) zw zv ju

2. Water is to be sterilized for drinking purpose without using any chemicals this can be done by usinga) u v rays b) visible light c) short wave length radio waves d) long wave length Radio waves

gAiP U GAiVz g AzPgP QAiU Mr PrAi g qAi PVzEzPV zC) gwv QgtU D) UZg P E) Pr vgAUzg grAi vgAUUF) Z vgAUzg grAi vgAUU

3. In a heat engine the linear motion of the Piston is converted into rotation by the component

a) spark plug b) Carburettor c) Crank shaft d) Fuel injection pump

C) P U D) Pglg E) PzAq F) EAzs EAdP A

4. An engineer wants to design an engine to convert 800KJ of heat into 840KJ of useful mechanical work.

The correct statement related to the above engine is that it

a) is less efficient b) is more efficient c) cannot be designed d) is 100% efficientM EAfAig 800 KJ R 840 KJ GAiP AiiAwP PV jwAv EAfU Eav. F EAfU AAzAv jAiiz PC) Ez Pr zPv Az D) Ez Z zPv Az E) Ez U zs

5. An astrophysics Scientist observes that galaxy 'A' is more red shifted than galaxy 'B'. The conclusion

that can be drawn from this is thata) the velocity of 'A' is more than 'B' b) the velocity of 'B' is more than 'A'

c) both the galaxies have equal velocity d) both the galaxies are at rest.

M RU sv eAi U Q 'J' Jz UQ '' VAv Z PA l Agz Uv.EzjAz PUzz wiAzgC) 'J' U '' VAv Z D) '' U 'J' VAv ZE) Jgq UQU U F) Jgq UQU wAiz.

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6. In an nuclear reactor, the number of cadmium rods used are less than the required number. Then one of

the possibilities is

a) the reactor may explode b) the chain reaction stopsc) number of fissions decrease d) the number of neutrons decrease

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7. If emission test is required for an L.P.G run auto rickshaw, the availability of oxygen in moles for

combustion of one mole of butane is

a) less than 5 b) between 8.5 and 9.5c) between 9.5 and 10.5 d) more than 10.5

zv mAiAAz PAi CmjPU g jP Pzg 1 m z

QAiU zgP DdP UC) 5 VAv Pr D) 8.5 jAz 9.5E) 9.5 jAz 10.5 F) 10.5 QAv Z

8. In a soap industry the chemist forgets to add sodium chloride during the manufacture of soap, the

possible effect is

a) soap cannot be easily separated b) chemical composition of soap changes

c) soap will not get required colour d) the solubility of soap increases.

PSAi gAiP vdg vAiijU rAiA Pgq jz gvqv. Ezg juAzU zsvC) sV vQ DU C) gAiP AAid z Uvz.E) U Pz t g F) Uz ZUvz.

9. Borosilicate glass is used to make school laboratory equipments because it

a) is highly transparent b) with stands sudden changes in the temperature and transparent

c) has high refractive index d) absorbs radiations Ai AiUAiz GPgtU iq gPm Ud vg KPAzg EzC) Z gzP D) vz KjvU vqAivz v gzPE) Z Q s ZAP Az F) QgtU jPvz.

10. Using sodium hydroxide as one of the raw materials it is possible to preparea) soaps and detergents b) cement and ceramics

c) glass and plastics d) cement and glass

rAiA qPq RZ U MAzV vAiij zsUzC) U v idPU D) Am v gPE) Ud v P U F) Am v Ud.

Fill in the blanks with suitable terms

P zUAz ng U sw ir

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11. A p-n junction allows current to pass in one direction this is called_____ 1 x 3 = 3p-n dAP zv MAz gz iv jAi qvz. F QAiAi g ____ .

12. Rader gun works on the principle of______gqg U P iq vv _______________.

13. The device which converts light energy into electrical energy is______

Q QAi zv QAiiV jw zs ______________

14. Match the following/A gj: 1 x 4 = 4A B

1. Natural Gas/VP C L.P.G/zv mAiA C2. Butane/m explosives/lPU3. Benzene/f to detect leakage of L.P.G/zv mAiA C jP v Zz4. Toluene/m emission test/g P jP

Carbon black/P Perfumes/PExhaust gas/ .

15. A cyclist going round a curve leans towards the centre of the curve. Give reason 1 x 6 = 6

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16. What is a centrifugal governer?Anse AiAvP JAzg ?

17. What is the colour of the star Betelgeuse?l V Pvz t ?

18. Mention the purpose of using a plane glass sheet in a solar cooker?g CrU M Ai Uf Z Gz w.

19. How does the pressure cooker help in saving energy?g PPg QAi GvAi iq U AiPjAiiVz ?

20. Write the balnced chemical equation of the reaction between sodium carbonate and calcium chloriderAiA P m v PAiA PgqU q gAiP QAiAi vVz gAiPPgt gj.

21. Write any two factors on which the induced EMF depends 2 x 9 = 18jv zv ZP CAg Aiizzg Jgq CAU w.

22. Draw a neat sketch of D.C. Dynamor.. qz CAzz av gj.

23. What is electromagnetic spectrum?

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a) Name the electromagnetic radiations which has

1. the lowest frequency and

2. lowest wavelength

zv PAwAi gv JAzg ?C) CvAv Pr Dw vD) CvAv Pr vgAUzg Egzv PAwAi QgtU j.

24. Draw a neat sketch to show the exhaust stroke of an external combustion engine

25. Give scientific reasons for the following

EUU eP Pgt Pr.a) Iron articles are electroplated with chromiumC) Ptz U PAiAAz zv iqvg.

b) Calcium silicate is a protective layer for the molten iron in the blast furnace

D) Hz PAi zv PtP PAiA Pm gPu PZVgvz.c) Copper is not used to prepare hydrogen in the laboratory

E) AiU Ai qd C vAiij v .d) Ore of copper is not concentrated by hydraulic washingF) jAi jAz vAizg P vz Cg g.

26. what is the role of magnesium and dilute hydrochloric acid in the preparation of siliconP vAiijPAi VAiA v z qPjP Dz v?

27. write the steps involved in recycling plastics.P g PAi MUArg AvU gj.

28. Name two types of hardness in water. On what principle can hardness of water be removed?j Uqvz Jgq zsU j? Aii vvz j Uqv gu iqUvz?

29. Draw a circuit symbol of each of the followinga) Forward biased diode b) transistors of n-p-n

F PPAq wAiAzP Aq APv gj.J. q - M - qAiq . n-p-n mg

30. State the universal law of gravitation . prepare it by a mathematical equation 3 x 4 = 12

Ugv Ai w Ez MAz Pgtz gz g.

31.What is impure spectrum? Why is Raman scattering called incoherent and Rayleigh scattering called

coherent scattering. On what basis did Raman give satisfactory explanation of incoherent scattering?Cz gv JAzg? g ZzjP JAz v g ZzjPAi AP ZzjP Jvg KP? CAPZzjPU gg Aii Dzsgz Pz SAi rzg?

32. If the present mass of a radio active element is 3.125 gm and its half life period is 8 days. What was its

initial mass before 40 days.

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Ez. 40 U Az Ez zsv zg Kv?

33. Draw a neat diagram of the device that converts nuclear energy into electrical energy.fP QAi zv QAiiV jw zsz CAzz av gj

34. State the law of conservation of momentum. The escape velocity on the earth is 4 x 3 = 1211.2km/s what does it mean? How are orbital and escape velocities related to

one another? At what height geostationary statellite is launched.

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35 How does a protostar attain the steady state? What is a neutron star?D Pv gwAi U vvz? m Pv JAzg?

36. Draw a neat diagram of each of the following1. Blast furnace used to extract iron 2. Electrolytic refining of copper.

EU wAiAzP CAzz av gj.1. Ptz Gzgtz Hz P 2.

BIOLOGYf

I. FOUR ALTERNATIVES ARE GIVEN TO EACH STATEMENT CHOOSE THE CORRECT ANSWER

AND WRITE IN THE SPACE PROVIDED

wAiAz PP DAiU q Vz. j Gvg DAi ir Png z gj.

1. One of the following statements is true. 1 x 5 = 5

a) Ragi plant has parallel venation and cotyledon raises above the soil during germination.

b) Ragi plant has parallel venation and cotyledon remains below the soil during germination.

c) Ragi plant has reticulate venation and cotyledon remains below the soil during germination.

d) Ragi plant has reticulate venation and cotyledon raise above the soil during germination.F PVU MAz P jAiiVzC) gV Avg Az, d AiU dz sgz UP gvz.D) gV Avg Az, d AiU dz sgz PU GAivz..E) gV eAzs Az, d AiU dz sgz PU GAivz..F) gV eAzs Az, d AiU dz sgz UP gvz.

2. A person is advised not to donate blood after being tested for ELISA, because he is infected bya) HIV B) HBV c) HSV d) SIV

M QAi 'J' jPU Ml Avg Dv gPz iqzAv qVz. KPAzg CUvUg APC. Z L D.) Z.. E. Z. J. . F. J.L..

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3. After being pricked by a thorn, a boy withdraws his leg immediately. The center of this action isa) Cerebrum b) Cerebellum c) Spinalcord d) Hypothallamus

qU vz vPt P AzP JzPv. F QAiAi PAz

4. Vegetative reproduction found in multicellular alage is a natural process of

a) Cloning b) DNA finger printing c) Genetic engineering d) Recombining DNAPAi U qAi PAid jwAi Avvw QAiAi sPC) PAU D) r.J.J. gZ E) v vAve F) g AAifv r.J.J.

5. Blood report of a 40 year old person indicates high glucose level. He may be at risk of getting.

a) Glaucoma b) Cataract c) Astigmatism d) Retinopathy

vvU zsv ZVjvz.

6. MATCH PART 'A' WITH PART 'B' : 1 x 4 = 4

A B

1. Areolar tissue a) Provides frame work to SpleenKjAig CAUA UP ZPl MzVvz.

2. Ligament b) attaches muscles to bones

vAvPl AiU UU Avz.3. Adipose tissue c) digests toxic substances

Cr CAUA Ad zxU ftvz.4. Tendones d) provides frame work to entire body

Ai gd Er zP ZPl MzVvz.e) attaches one bone to another

MAz Ai EAz U Avz.f) avoids friction in joints

g) acts as a shock absorber

DWv gPzAv wvz.

ANSWER THE FOLLOWING QUESTIONS IN A WORD OR A SENTENCE

F PV UU MAz z Cx MAz Pz Gvj

7. What is biotechnology ? 1 x 4 = 4eP vAve JAzg?

8. Which important characteristic feature of selaginella depicts that it is highlyevolved than Riccia ?

f jQAiiVAv Z PUArz Jz Pj R UtPt Aiiz?

9. Ramya experiences numbness in herlimbs due to accumulation of watery fluid, name the disease and

adulterant that has caused it.g PPU jAv z Rgu AiiVgzjAz e rgvz. C wg gU

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Aiiz? EzP Pgtz P gP j?

10. Why is goiter called an endemic disease ?UUAq gU P JAz KP PgAivg?

ANSWER THE FOLLOWING IN 2 OR 3 SENTERNCES EACH

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11. How are ear and throat connected ? What is its advantage ? 2 x 6 = 12Q v UAl U AP A? EzjAzU Aid?

12. Raju resides in an area where not much of lichens are found. List any four health hazards he may besuffering from

P U ZV Ez zz gd wz. C wgzz DgU Un ir.

13.Explain the structure of HIV in 20of 3 sentences.

Z L gZAi Jgq Cx g PU j.

14. Mention one function of the following.

a) Sclereids b) Companion cells

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15. How can vanaspathi in ghee be detected ?vz w EgPAi U v Zz?

16. A student has uprooted a weed plant in the school garden. The student infers that it is a dicot plant.Support the inference.

M zyAi v vlz MAz P g v Qv qV Cz z AzwiP gzzg C wiP Pgt r.

ANSWER THE FOLLOWING

PV UU Gvj.

17. How does electrochemical fixation take place during nitrogen cycle ? 3 x 2 = 6md ZPz zv gAiP jPgt U GAmUvz?

18. Draw a diagram to show external features of fish and label any two parts gZAi vj av gz Aiizzg Jgq sUU Ugw.

19. Draw a diagram of vertical section of human brain and label any four parts. 4 x 1 = 4

i z bz lz av gz Aiizzg sUU Ugw.

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Model question paper - II

PART - I


For Each multiple choice question four alternatives are given. Out of these alternatives choose the

correct answer and write the answer in the space provided 1 x 10 = 10

1. M Cm CAUrAz v zg iq Qr uAi Rjv.D Q Ag zg JAf1) m JAf 2) r JAf3) z JAf 4) CAvz JAf

A person buys a spark plug from a automobile shop. The engine present in his vehicle is(1) Petrol engine (2) Diesel engine(3)External combustion engine (4) Internal combustion engine.

2. vAiijPAi G GvAz r a) rAii qP q b) rAii Pgqc) tP d) V gThe substance used to separate the soap from the by product during saponification is

(1) Sodium hydroxide (2) Sodium chloride

(3) Animal fat (4) Glycerol

3. r JAf r EeP DUza) Aq qvz PAi b) Aq qvz DgA szc) sQqvz DgA sz d) sQqvz PAiIn diesel engine diesel is injected into the cylinder

(1) At the end of compression stroke (2) At the beginning of compression stroke

(3) At the beginning of intake stroke (4) At the end of intake stroke

4. PvP gvUAU Vg VP gvU v ir r G0iVzz zvPAwAi vgAUz Dw1) P vgAUz DwVAv Pr Eg P 2) zUZg Q DwVAv Pr Eg P.3) zUZg QVAv Z v JP-Qgtz DwVAv Pr Eg P4) gwv QgtQAv Pr Dw Eg PThe frequency of electromagnetic radiation used to detect & separate the real gems Which are mixed

with artificial gems.

(1) Should be less than that of microwaves. (2) Should be less than that of visible light.

(3) Should be greater than that of visible light & less than that of X-rays

(4) Less than that of ultraviolet waves

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5. QPm DlUg Av Jz ZAr U CAi GAiVzz zsa) SONAR b) gqg U c) ECG d) RADAR The device used to find the velocity of a ball bowled by cricketer Srishanth

(1) SONAR (2) RADAR gun (3) ECG (4 ) RADAR

6. M mAig DAi P Ai vUAi Ez Pa) rAii m m b) rAii NAimc) rAii qq m d) rAii AigmWhich of the following is used to remove acidic stain on clothes

(1) Sodium palmitate (2) Sodium oleate (3) Sodium dodecyl sulphate (4) Sodium stearate

7. fP zv gz g gU Pgv GAmzg DU ju1) QAiiPj lvz 2) fP QAi vz3) U s zvz 4) zv Pr GvwAiiUvzIn a nuclear power plant the scarcity of boron rods results in

(1) Bursting of reactor (2) Nuclear reaction is completely stopped

(3) Melting of core (4) Electricity generation decreases

8. gz vAiijPAi z Ud GAiV Pgt1) CvZ gzPVgz v a Q s ZAP Egz2) fP Qgt gz v CvZ gzPVgz3) a Q s ZAP Egz v fP Qgt gz4) a Mvq vqAiz v CvZ gzPVgzThe reason for using lead glass in the preparation of lenses is ,it is

(1) Highly transparent and has high refractive index

(2) Absorbs radiation and highly transparent

(3) Has high refractive index and absorbs radiation(4) Withstands high pressure and highly transparent

9. ZAzAii-1 P z Pq GAiVsz Qgt1) X-Qgt 2) CPA Qgt 3) gwv Qgt 4) PvgAUThe electromagnetic radiation used to direct chandrayana-1 is

(1) X-ray (2) Infrared ray (3) Ultraviolet ray (4) Microwave

10. MAz CUP AAiP CtvP 78. Czgg U EAU v ddP Dzg, CzgCtva) C

4H

10b ) C

6H

14c) C

6H

6d) C

12H

26

The molecular weight of an organic compound is 78, the elements present in it are carbon and hydrogen

,then its molecular formula isa) C

4H

10b ) C

6H

14c) C

6H

6d) C

12H

26

Fill in blanks/l vAj 1 x 3 = 3

11. MAz PzU Czg gzs ------ DUvzWhen a metal is heated its resistance________

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12. Ai GAUg gZAi wAi zsVgz _______ juAzThe effect that helps us to know about rings of Saturn is ______

13. qd dU UAq MAz Aii i dV Q qUqAiiUz ________g QAiAiThe chain reaction in which four hydrogen nuclei fuse into one helium nucleus with the liberation of

energy is ________

14. A g.A B

1 J..f/L.P.G Fy/Ethane2. .J.f/C.N.G g gt/Straight chain3. L Am/Iso pentane Fx gP/Ethyl mercaptan4. sg/Paraffine C

nH

2n+ 2

C5

H10

CH4

C6H

6

F PV UU MAz P z GvjAnswer the following in One sentence 1 x 6 = 6

15. PAzR JAzg ?What is centripetal force?

16. v g Ai wg g Ai U gagvg?How does the roads are constructed at the bends on a level road?

17. g CrU M Ai nUU Uf Zgvz. Pgt Pr.Solar cooker is covered with a transparent plate of glass -Give reason.

18. Ai g.State Hubble's law.

19. egU P Q Q Pl jjzP AAzslAv vUzPzz P ?Write the remedial measure that can be taken by a cattle raring person in order to minimize the energy

crisis.

20. j UqvP Pgtz Aiizzg 4 tU jName any four salts that cause hardness of water.

F PV UU Gvj.

21. r.. mg av r sUU j. 2 x 9 = 18Draw a neat labelled diagram of DC Dynamo.

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22. J.. q v r. qU q Jgq vU w.Write any two differences between AC Dynamo and DC Dynamo

23. F PVU j.1. gitE1 PPAiz E P E2 PPU fVAi QAi2. gitE2 PPAiz E P E1 PPU fVAi QAi.3. gitU Pr Q wAz CP Q wU Kj QAi4. gitU CP Q wU Kj UAz QAi MzV QAi

Name the following process

(1) In an atom, an electron from an orbit E1

raises to an orbit E2

(2) In an atom, an electron from an orbit E2

jumps to an orbit E1

(3) Atoms are raised from lower energy level to higher energy level

(4) Supplying energy from external source, to raise the atoms to higher energy level

24. gr0i UPz P P rDraw the block diagram of a simple radio receiver.

25. Draw a sketch of external combustion engine showing exhaust stroke.

26. d v PAZ EU vAiij PU WlPU, F PVUAz Dj gj.v, v , vg, PChoose the components used to prepare german silver and bronze,from the following

Copper, Zinc, Tin, Nickel.

27. P P q U qAiz? PgtzAU jHow silicon carbide is obtained from silicon? Explain with the equation

28. jPgt JAzg ?F PVU gU j. 1) ms 2) What is polymerization? Name the monomers of the following. (1) Teflon (2) Nylon.

29. Uq j Jgq CPU wWrite any two disadvantages of hard water.

F UU Gvg gj/Answer the following questions

30. UAi ZU AAzAv Pg g AiU gj 3 x 4 = 12

State Kepler's three laws of planetary motion..

31. zgzg F PV Az sz Aii Lm aQvAi Pqj.C) M Q PgAz wz D) M xgq UAy HPArz, tU PApvVgvzImagine that you are a doctor by using which isotope you will treat.

(1) A person is suffering from Cancer (2) Growth of a person is retarded due to bulging of Thyroid gland

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32. a) gSgt gv U qAiz ?b) g juP, g ZzgPU Eg vU ?a) How can we obtain a line emission spectrum?

b) Write the differences between Rayleigh scattering and Raman effect

F PV UU Gvg gj/Answer the following questions.

33. fP zv gz CAzz av gz sUU Ugwj.Draw a neat labelled diagram of nuclear reactor and label the parts.

34. KPAv gPm z Av gPmU GUU GquAi GAiV Pgt?gPm GquAi U Pz 2 jP CAU ? 4 x 3 = 12Why multistage rockets are used to launch the satellite instead of single stage rockets?

Write any two practical aspects need to be considered while launching a rocket.

35. vgz UZ v UAi UZUVg 2 vU w. F PVU j1) v P 2) PAzvWrite any two differences between open and globular star clusters. Explain the following

(1) White dwarf (2) Red giant

36. HzPAi CAzz av r sUU j. PAi g g Jvgzg v UgwDraw the neat labelled diagram of blast furnace and mark temperature range at different heights inside

the furnace .

f

DAiAi UFor Each multiple choice question four alternatives are given. Out of these alternatives choose the


1) F Dv d P GzguAiiVz1) gUg 2) sjAii 3) P 4) z This plant is an example for Angiosperm

a) Spyrogyra b) funaria c) cycas d) hibiscus.

2) F PVU vv jwAi EzVz

1) E 2) xgQ 3) Cr 4) tUAi Emergency harmone among the following isa) Insulin b) Thyroxin c) adrenaline d) Growth hormone.

3) 'gwv wQAi'Ai Rg Ai EzVgvz1) wQAiU vP Zz 2) ZzU vP wQAi-e s CAvg3) Zz z; e sz Avg wQAi 4) es z Zz v wQAi CAvg

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This is the scope of reflex action

a) stimulus to the response b) response to the stimulus before getting experience

c) Stimulus first; response after getting experience d) experience first, Stimulus and response afterwords

4 Z.L.Ai gmg DVgvz KPAzg1) Z.L.Ai j mQ qAivz 2) Z.L.Ai mQ qAivz3) Z.L.Ai j mQ qAi 4) Z.L.Ai mQ qAiHIV is a retrovirus because

a) It undergoes reverse transcription b) It undergoes transcription

3) It doesn't undergo reverse transcription. d) It doesn't undergo transcription

5. CgAi v Z ePvAvez F sU RgV AiPUz1) vvAve 2) CAUA P 3) gZ vAve 4) vz The aspect of biotechnology which helps in the detection of culprits in the forensic science

a) Genetic Engineering b) Tissue culture c) Finger print technology d) Cloning

6. A gj 1 x 4 = 4A B

1. zs CAUA g v Dg AU CAUAMeristamatic tissue water and food storage tissue

2. PA gPP CAUAXylem Protective tissue

3. sAii Dzsg CAUAphloem Supportive tissue

4. gAPi tUPgPParenchyma Growth tissue

g g CAUAWater absorbing tissue

Dg V CAUAFood conducting tissue

g V CAUAWater conducting tissue

F PV UU MAz Pz Gvj

7. i PgP KP ? 1 x 4 = 4Man is a Chordate why ?

8. i qQ v gQU Ai Mvq KP g g iVg P ?Why should be the air pressure in middle and outer ear equal in man ?

9. P gPUUz Dg zxUAz GAmU Jgq P U j.Name any two diseases caused due to the consumption of adultrated food.

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10. eP vAvez SAi g. 2 x 6 = 12Define biotechnology

F PV UU Gvj.

11. gdz Dv d U Cw Z P Az UAz KP PgAiVz ?Angiosperms are considered as the most evolved plants in the plant kingdom why ?

12. PA v sAiiUg V wAiP fPU j.Name components of xylem & phloem which have lignified wall.

13. How does the intelligence of man increase as thickness & convolutions of cerebral cortex increase ?

14. KqU vvz QU Ai AzU Cz KP UtU ?

Why pneumonia is not cured in an individual suffering from AIDS ?

15. Dgz P gP JAzg ? Dgz P gPAi vqAi Pg PPAq Jgq PU Aii ?What is food Adulteration ? Write any two precautions taken by the government to control food

adulteration.

16. EAUz ZP jt ZP Pgt svz gZQPgtz AvU Aii ?What are the different stages of recycling which are responsible to consider carbon cycle as perfect

cycle ?

F PVU Gvj 3 x 2 = 6

17. Vqz av r sUU jDraw a neat diagram of mustard plant and label the parts.

18. F PVU jt v Cjt fgAiP ZPUV VPj, CUV MAzR v g.1) EAUz ZP 2) gdPz ZP 3) g AdPz ZP 4) UAzsPz ZPClassify the following into perfect & imperfect biogeochemical cycle and write one main difference

between them.

a) Carbon cycle b) Nitrogen cycle c) Phosphorous cycle c) Sulphur cycle

19. i z bzz av r sUU j

Draw a neat diagram of L.S of human brain and label the parts. 4 x 1 = 4

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Model question paper - III

PART - I


For Each multiple choice question four alternatives are given. Out of these alternatives choose the


F PV UAz jAiiz GvgU Dj gj.1) C Ugz Jgq UU ZA PlqU q P m PVz. D PlqU q zg

RgV CAi C Pz vv1) grAi bAiA 2) g gAfAU vAve

3) zwzv ju 4) qg juTwo multistoried buildings in twin cities are to be connected with a cable trolley. Principle applied tomeasure the accurrate distance between them is

(1) Radiography (2) LASER Ranging (3) Photoelectric effect (4) Doppler Effect

2) 1) grAi 2) CPA 3) Cw g 4) JP-QgtWe have to detect a flaw in a machine. The electromagnetic radiation used for this Technology is

(1) Radiowave (2)Infrared ray (3) Ultraviolet ray (4) X-ray

3) AiP itz EAzs v UAi iq JAf sU1) 2) P glg 3) Aqg 4) AigPart of the petrol engine where the air and petrol are mixed in proper proportion is

(1) Piston (2) Carburetor (3) Cylinder (4) Boiler

4) 1) P glg 2) AzP 3) PzAq 4) grAilgIn a heat engine without this part it is not possible to convert linear motion into rotation

1) Carburetor 2) Condenser 3) Crankshaft 4) Radiator

5) zg gVAi U sPz UqAi A qAi z1) gwv Qgt 2) JP-Qgt 3) Ui-Qgt 4) uwv vgAUDoctors use this to get the image of fibroids of uterus

(1) X-ray (2) Gamma ray (3) Ultraviolet ray (4) Ultrasonic wave

6) F PVU Aiiz Ezg fP QAiiPjAi vPt git AAv nvz1) AiAvt g 2) AzP 3) gP PZ 4) vAPjIf this part is not present in the nuclear reactor then it might function like a nuclear Bomb

(1) Control rods (2) Moderator (3) Concrete shield (4) coolant

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7) Aii vqAi Gz Agg CqUU EAzs1) Ju 2) PnU 3) z mAi i C 4) gtTo prevent the air pollution, one can use this fuel

(1) Kerosene (2) Wood (3) Liquid petroleum gas (4) Dung cake

8) 2) zgv 3) gzPv 4) GZ QPgt ZAPWhich property of the borosilicate glass is the reason for using it in laboratory?

(1) Withstands high temperature fluctuation (2) Brittleness (3) Transparency (4)High refractive index

9) idPz CQv Ut1) e yAiVgz 2) DAi izsz Z Uz3) Uq j ZUz 4) eyAiVgzOne cannot encourage the use of detergent because of this property

(1) Biodegradability (2) Cleaning in acidic medium (3) Cleans in hard water (4) Non Biodegradability

10) M zyU vAV Ju, rAii qPq, rAii Pgq EU qVz. EUAzC vAiij zzz1) rleAm 2) rAii Aigm3) mAii mm 4) rAii P mCoconut oil, Sodium hydroxide and Sodium Chloride are given to the student, Using these he can

prepare

(1) Detergent (2) Sodium stearate (3) Potasium Palmitate (4) Sodium carbonate

ng eU vAj11) gAdPz gitU P gU gP irzU DU CgPz zs ---- 1 x 3 = 3

The type of semiconductor obtained when silicon is doped with phosphorous is_____

12) gAz gl uwv vgAU zz v v, wsUAq UP 3 PAqUjzg, zz D ------Ultrasonic waves are emitted from the SONAR. These waves are reflected by the ocean bottom and

reach the detector in 3sec,The depth of the ocean is ______

13) g M Ai MU Z R AUUAv iq sU ________The part which helps to store large amount of heat energy inside the solar cooker is_____

14) A g 1 x 4 = 4A B

1. C6H6 VP Cz R WlP/Main component of natural gas2. C

6H

12D/Alkyne

3. C6H

10AiP qP/Aromatic hydrocarbon

4. CH4

L P/Iso hexaneP QP qP/Carbocyclic hydrocarbonz mAii Cz R WlP/Main component of L.P.GCl/Acetylene

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F PV UU MAz z Cx MAz Pz Gvg gjAnswer the following in One sentence

15) Anse JAzg ? 1 x 6 = 6What is centrifuge?

16) P g wg xz ZU PAzz PqU KP Uv ?Why does a cyclist lean towards the centre of the curve while moving in a curved path?

17) g vgtz Jgq sUU Aii ?Which are the two regions of solar atmosphere?

18) How many silicon solar cells of 2 sq.cm. area are to be connected in a solar panel to produce 20v?

19) M Q mg P PAi P v .F P Evgg CjzU Aii zszQAi z Mvq PrAiiUvz ?A person starts to use bicycle instead of a motor cycle.If others also follow this method then pressure on

which source of energy can be minimized ?

20) AigU vvV Uq g zjAz A szz CAi Aiiz?What are the possible harms occurring with the continuous use of hard water in boilers?

21) 1) gU APAq PAv, g v Uz U Cz Q vwgU jv zvZP GAmUgzP Pgt Pq. 2 x 9 = 18

2) jv zvP z s g CAU Aii ?1) A magnet and a coil are moving in the same direction and with same speed e.m.f is not induced

in the coil ? Give reason.

2) What are the factors influencing induced e.m.f?

22) r. qz av r. sUU jDraw a neat labeled diagram of DC Motor.

23) zQAi Pvz gwv Qgtz Jgq GAiU gj.Write any two uses of Ultraviolet ray in the field of medical.

24) m g Jgq zsU Aq APvU av rj

Give the circuit symbols of two types of transistor.

25) m JAf sQ qvz av rjDraw a sketch of intake stroke of a petrol engine

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26) jvg.Give reason for each of the following (1)Nichrome is used to make heating coils (2) Copper is mixed

with gold while making ornaments

27) nP P U qAiUvz ?PgtzAU jHow is crystalline silicon obtained? Explain with the equation

28) Uf C JAzg ? EzjAz DU CPv K ?What is annealing? What is its use?

29) j AgPuAi PU g.Write four methods of conserving water.

30) 1) Ugv Ai g.3 x 4 = 12

2) Ugv AiAz PV jl CAU Aii?1) State the universal law of gravitation.

2) Mention four points successfully explained by it.

31) 1) gv zPz tU CAi U Pr AiiUvz ?2) Q tsdU Pgt ?3) 1) How can overlapping of colours in spectroscope be minimized?

2) What is the reason for dispersion ?

3) Mention the type of spectrum obtained by candle flame and light emitted from gases or vapours.

32) F PV Az sU GAiVq LmU j1) AiP dU zgv qg AiPAi Ai wAi2) 3) P eU gV U Aii jwAi m CUvzAiAz PAqPWrite the name of the isotopes used in the following cases

1) To find the age of fossil of Dynosaraus

2) To study the action of medicines

3) To determine the kind of phosphate required for Ragi crop.

33) 1) g z QAiAi av r,m v z gPU Ugw.2)

qUqAiiUv?Sketch the diagram of nuclear fission reaction and label neutron and fission fragments

a) Calculate the number of neutrons liberated in the third stage of nuclear fission reaction liberating

two neutrons when a nucleus gets fissioned

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34) 1) sg GU gV UZj Pgt ? 4 x 3 = 122) sg GUU APeUAz dUv QjzVz .x r.3) PP U v Z UU q AAzs gj.

1) Why does geostationary satellite appear to be stationary?2) "Communication network of geostationary satellite made this world tiny". Justify this statement.

3) Write the relation between Orbital and escape Velocity

35) vz PgtP GAiV zv sd Pz av r, sUU j.Draw the sketch of electrolytic cell for purification of copper and label the parts

36) 1) 2) PvU UZg PP Pgt ?3) PwP Pz PP Av v gw Av U GAmUvz.1) How many times a star of magnitude 2 is brighter than a star of magnitude 4

2) Why do the stars differ in their apparent brightness?

3) Explain how the cocoon and steady stage of a star occur.

f

For Each multiple choice question four alternatives are given. Out of these alternatives choose the correct

answer and write the answer in the space provided 1 x 5 = 5

1) F PV U etdP v AUt dPUgq vAvVg 1) Dvd U 2) ZU 3) Cv d U 4) AismUWhich among the following plants have independent Sporophyte and gametophyte.

A) Angiosperms B) Pterydophytes C) Gymnosperms D) Bryophytes

2) j mQ JA QAiAi EzVgvz1) r.J.J Az Dg.J.J vAiij 2) Dg.J.J Az n vAiij3) Dg.J.J Az r.J.J Ai vAiij 4) r.J.J CtU wPgtThis is the reverse transcription process

A) Synthesis of RNA by DNA B) Synthesis of protein by RNA

C) Synthesis of DNA by RNA D) replication of DNA molecules

3) i zAz Kq gwvZz U g WlPU E Pq j1) e gU 2) QAii gU

3) e g iv 4) e v QAii gUAz AAifvz gUReflex arc produced by spinal chord of man also includes these componentsA) sensory nerves B) motor nerves

C) only the sensory roots D)mixed nerves produced by the combination of sensory and motor roots

4) gAAifv r.J.J vAve Ezg EAz gVz1) vvAve 2) eP vAve 3) CAUA P 4) gZ vAve

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Another name for recombinant "DNA Technology" is

A) Genetic engineering B) Biotechnology C) Tissue culture D) DNAfingerprint technology

5) eAAiU eP gU D v CAvU Vgv1) 2) 3) 4) Origin and end of sensory nerves of all sensory organs are as follows.

A) origin - specific sensory area of brain; end - specific sense organs

B) origin - specific sense organs; end - specific sensory area of brain

C) origin - specific sensory area of brain; end - specific related sense organ

D) origin - Medulla oblongata; end - specific sense organs

6) A g1 x 4 = 4

A B

1. KjAig CAUA/Aerolar tissue CaP AiU/ involuntary muscles2. m v AiU/striped muscles sPP fPU Az/intercellular space3. mm/platelets LaP AiU/voluntary muscles4. DP/Axon gP UlPU AiP/clotting of blood

d CAUA/Adipose tissueAi z/Myelin sheathqAqm/Dendrite

7) Aiizzg Jgq xAiP U j 1 x 4 = 4Name any two plants which are having thallus.

8) zwgAiP U v DU KP PP J ?"Photochemical smog and acid rain are curse to man kind" why?

9) gZ vAvez Aiizzg MAz CAi g.Write any one of the application of DNA finger print technology.

10) vzAU iV iq P gP zx AiizVz ?Which substance is mixed as a adultrant in ghee?

11) xgQ v Cr U MAzAz PAi gj 2 x 6 = 12

Write one function of hormone Thyroxin and Adrenaline

12) i Ptg z v CAzszUVg Jgq R vU gWrite any two differences between yellow spot and blind spot of human eye.

13) i DgUz wP juU GAliq zs iU j.Name the different types of pollutions that effect human health.

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14) JZ.L. v Z..UVg Aiizzg Jgq R vU nirList out any two main differences between HIV and HBV

15) F PVU g v CAUAU v AQt v CAUAUV VPjj. gAPi,PA, sAii, P APiClassify the following into Simple permanent tissues and Complex permanent tissues.(a)Parenchyma

(b)Xylem (c)Phloem (d)Collenchyma

16) F PVU g v PuU zAi Az tUV VPjj1) P 2) j 3) 4) iClassify the following vertebrates into three chambered and four chambered heart bearing animals

(a) Frog (b) Pigeon (c) Cobra (d) Man

17) f sgAiP ZPU jt v Cjt ZPUV VPj AU , Ai

jPgt v gZQPgtU U DzsgP CAUV ?3 x 2 = 6

How are Reservoir pool, Exchange pool, fixation and recycling Considered as the basic factors in the

classification of biogeochemical Cycles into perfect and imperfect cycle?

18) gZAi vj av gz sUU jjDraw a neat diagram of external features of a fish and label the parts.

19) zAi Cqbz lz av gz sUU j 4 x 1 = 4Draw a neat diagram of cross section of spinal chord and label the parts.

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Science Kan Eng

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