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CHENNAI IAS ACADEMY

Vellore

TNPSC GROUP - I,II,IIA,IV &VAO

Prelims & Mains

SAMACHEER KALVI QUESTIONS

8th science with key answers

# 5, old by-Pass Road, National Theatre

( Near- opp - Benzz Park ) Vellore- 4

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8th

SCIENCE

1. Choose the correctly matched:

1) Red Algae - Gelidium

2) Brown Algae - Gracillaria

3) Red Algae - Gracillaria

4) Brown Algae - Gelidium

rupahd Tw;wpidj; Bju;f.

1) rptg;g[ ghrp - b$ypoak;.

2) gGg;g[ ghrp - fpuh!pByupah.

3) rptg;g[ ghrp - fpuh!pByupah.

4) gGg;g[ ghrp - b$ypoak;.

A) 1 and 2 B) 2 and 3 C) 1 and 3 D) 2 and 4

2. Match the following:

Colour of Algae Algae

a) Phycocyanin 1) Oxillatoria

b) Green 2) Chlamydomonas

c) Fucoxantain 3) Sargassum

d) Phyco erytarin 4) Polysiphoria

bghUj;Jf:

ghrp epwkp ghrp tif

a) igf;Bfhradpd; 1) M!py;yBlhupah

b) gr;irak; 2) fpshkpBlhBkhd!;

c) gpa{f;Bfhrhe;jpd; 3) ru;f;fh!k;.

d) igf;Bfh vupj;jpupd; 4) ghypirBghdpah

a b c d

A) 2 1 4 3

B) 1 2 3 4

C) 1 2 4 3

D) 2 1 3 4

3. In a plant root, which part helps in conduction and storage?

A) Rhyzodermis B) Xylem C) Phloem D) Cortex



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jhtu Btupy; flj;jYf;Fk;, Brkpj;jYf;Fk; cjt[k; cWg;g[.

A) iuBrhblu;kpd; B) iryk; C) g[Bdhak; D) fhu;blf;!;

4. Choose the correct statement:

1) Many xylem bundles are found in monocot.

2) Pith is absent in dicot.


1) gy fw;iw mikt[ xU tpj;jpiy jhtuj;jpy; cs;sJ.

2) nUtpj;jpiy jhtu Btupy; gpj; ny;iy.

A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJkpy;iy

5. Which of the following statement is not correct about Gymnosperms?

A) It produce male and female cones. B) It’s leaves vary in nature.

C) It has only one sporophytic life cycle D) It undergoes secondary thickening.

$pk;Bdh!;bgu;k; gw;wpa Tw;Wfspy; jtwhdJ vJ?

A) Mz;, bgz; Tk;g[fs; cUthfpd;wd.

B) BtWgl;l niyaikg;g[

C) !;BghBuhigl; epiy kl;LBk cs;sJ.

D) nuz;lhk; epiy tsu;r;rp cs;sJ.

6. Choose the correct statement.

1) Bacterial cell is a prokaryotic cell. 2) Bacterial cell do not have cell wall


1) ghf;Oupahtpd; bry; g[BuhBfupBaof; bry;.

2) ghf;Oupahtpw;F bry;Rtu; ny;iy.


7. African sleeping sickness is caused by

A) Entameoba Histalytica B) P.Vivax

C) Trypanosoma Gambience D) P.falciporum

Mg;gpupf;fhtpd; JA;Fk;; Beha;f;F fhuzkhdJ?

A) vz;lkPgh #p!;lhypofh B) gp.itthf;!;

C) oupg;dBrhkh Bfk;gpad;!; D) gp.ghy;rpghuk;



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Cells Shape

a) Flame cell 1) Cylindrical

b) Ovary cell 2) Multi faceted

c) Disc Epithelial 3) Egg shaped

d) Columnarepithelium 4) Pipe shaped

bghUj;Jf:

bry;fs; totk;

a) flu; bry; 1) cUis

b) mz;l bry; 2) gyBfhzk;.

c) jl;L vgpjPypak; 3) Kl;il

d) Jhz; vgpjPypak; 4) FHy;

a b c d

A) 4 3 2 1

B) 3 4 1 2

C) 4 3 1 2

D) 3 4 2 1

9. Which of the following is called as ‘power House’ of the cell?

A) Ribosome B) Lysosome C) Mitochondria D) Centriole

bry;ypd; rf;jp epiyaA;fs; vdg;gLtJ?

A) iubghBrhk; B) iyBrhBrhk;

C) ikl;Blhfhz;l;upah D) brd;l;upBahy;

10. Which of the following help in retinal pigment formation in Retinal cells?

A) Golgi Apparatus B) Endoplasmic reticulum

C) Mitochondria D) Ribosome.

tpHpj;jpiuapy; tpHp epwkpr; bry;fis cUthf;f cjt[fpwJ.

A) Bfhy;if cWg;g[ B) vz;Blhgpshr tiy

C) ikl;Blhfhz;l;upah D) iuBghBrhk;.

11. Which of the cell organ was first described by Henneguy and Leuhossk in 1897?



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A) Nucleus B) centrioles C) Lysosome D) Golgi Apparatus.

1897y; b#d;dpif kw;Wk; Yhf!;brf; vd;gtu;fshy; tpsf;fg;gl;l bry;

Ez;ZWg;g[

A) cl;fU B) brd;l;upBahy; C) iyBrhBrhk; D) Bfhy;if cWg;g[

12. Venkatraman Ramakrishnan got Nobel Prize in.

btA;fl;uhkd; uhkfpU&;zd; Behgy; gupR bgw;w Mz;L

A) 2009 B) 2010 C) 2011 D) 2012


1) Striated muscles are attached to the skeleton.

2) Striated muscles are cylindrical in structure.

3) Striated muscles are voluntary muscle.


1) tupj;jirfs; vYk;g[fSld; nize;Js;sd.

2) tupj;jirfs; cUis totk; bfhz;lit.

3) tupj;jirfs; naA;F jirfs; MFk;.

A) 1 kw;Wk; 2 B) 2 kw;Wk; 3 C) 1 kw;Wk; 3 D) 1,2 kw;Wk; 3

14. The Projections in between Renal pyramids is.

A) Calyces B) Pelvis C) Cartex D) Medulla

nU rpWePuf gpukpLfSf;F nilg;gl;l gFjp.

A) fhypr!; B) bgy;yp!; C) fhu;blf;!; D) bkLy;yh

15. In India Social Forestry project was started in.

ne;jpahtpy; rKjha fhLfs; jpl;lk; bjhlA;fg;gl;l Mz;L

A) 1975 B) 1977 C) 1976 D) 1978

16. Arrange the flora on the basis of the distribution in India in ascending order.

1) Fungi 2) Lichena 3) Pteridophytes 4) Bryophytes

ne;jpahtpy; cs;s jhtu tiffis mst[ mog;gilapy; VWtupirapy;

vGJf.

1) g{q;ir 2) ghrpfs; 3) blupBlhigl; 4) gpiuBahigl;

A) 1,2,4,3 B) 1,4,3,2 C) 3,4,1,2 D) 3,2,4,1

17. Choose the animal that is associated with Dudwa National park is.

A) Lion B) Elephant C) Tiger D) Rhinoceros.



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jj;th Bjrpag; g{A;fht[ld; bjhlu;g[ila tpyA;F.

A) rpA;fk; B) ahid C) g[yp D) fhz;lhkpUfk;.

18. What is the cause for the birds to lay eggs with unnaturally thin shells?

A) Pesticides B) Global warming C) CFC D) Oil Spills

gwitfs; naw;iff;F khwhf bky;ypa Kl;ilfis nlf; fhuzk;.

A) g{r;rpf;bfhy;yp B) cyf btg;gk;

C) CFC D) vz;bza; rpjwy;

19. When the sunlight decomposed silver chloride into silver and chlorine, their color

respectively is.

A) White, Yellow green B) grey, yellow green

C) grey white, yellow D) yellow white, green.

rpy;tu; FBshiuL r{upa xsp Kd;dpiyapy; rpijt[w;W rpy;tu; kw;Wk;

FBshupd; cUthFk;. ntw;wpd; epwA;fs; KiwBa.

A) btz;ik, gRik fye;j kq;rs; epwk;

B) rhk;gy;, gRik fye;j kq;rs; epwk;.

C) btz;ik fye;j rhk;gy;, kq;rs;.

D) kq;rs; fye;j mkpyk;, rhk;gy;

20. Number of metallic elements are

cByhfA;fshf cs;s jdpkA;fspd; vz;zpf;if.

A) 92 B) 82 C) 72 D) 62


Element Use

a) Rhenium 1) Pollution control

b) Palladium 2) Rocketnengine

c) Cadmium 3) Nuclear submarine

d) Hafnium 4) Paint.

bghUj;Jf:

jdpkk; gad;



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a) Budpak; 1) khR fl;LghL.

b) gy;yhoak; 2) uhf;bfl; vd;$pd;.

c) fhl;kpak; 3) mZ ePu;K}H;fp fg;gy;.

d) #hg;dpak; 4) bgapz;l;

a b c d

A) 1 2 3 4

B) 1 2 4 3

C) 2 1 3 4

D) 2 1 4 3

22. Which element is used for making Telescope Lenses?

A) Europium B) Terbium C) Californium D) Lanthanum

bjhiyBehf;fp fz;zho tpy;iyfs; bra;a cjt[k; jdpkk; vJ?

A) a{Buhg;gpak; B) blu;gpak; C) fypBghu;dpak; D) yhe;jdk;


1) Iron Sulphide contains Iron and sulphur in the ratio of 4:7

2) Hydrofluoric acid is capable of dissolving glass


1) nUk;g[ ry;igoy; nUk;g[ kw;Wk; ry;gu; tpfpjk; 4:7 tpfpjj;jpy;

cs;sJ.

2) i#l;Buh g[Supf; mkpyk; fz;zhoia fiuf;f ty;yJ


24. The valency of hydrogen atom is.

i#l;u$dpd; nizjpwd; mst[

A) One B) Two C) Three D) Four

25. Choose the wrongly matched pair.

Law Scientist.

A) Law of combining volume - Democritus

B) Law of conservation of Mass - Lavoisier.

C) Law of Definite Proportions - Proust.

D) Atomic Theory - John Dalton.

jtwhf bghUe;jp cs;s niziaj; Bju;f.



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tpjp tpq;qhdp

A) gUkd; nizg;g[ tpjp - blkhfpupoa!;

B) bghUz;ik mHpah tpjp - ytha;rpau;.

C) khwh tpfpj tpjp - g;bus!;l;

D) mZf; bfhs;if tpjp - $hd; lhy;ld;

26. The Scientist who proved that the electricity is made of particles called as electrical

atoms?

A) J.J.Thompson B) Michael Faraday C) Dalton D) A.Flemming

kpd;rhuk; vd;gJ kpd; mZf;fs; vd;w Jfs;fshy; MdJ vdf;

fhl;oatu;.

A) J.J. jhk;rd; B) ikf;Bfy; ghuBl C) lhy;ld; D) gpsk;gpA;


1) Coal have higher sulphur content if it was formed in swampy areas covered by sea

water.

2) India ranks first among the coal producing countries in the world.

rupahd Tw;wpidj; Bju;f:

1) rJg;g[ epyA;fspy; fpilf;fk; epyf;fupapy; ry;gu; mjpfstpy; nUf;Fk;.

2) epyf;fup cw;gj;jpapy; ne;jpah cyfpy; Kjyplk; bgWfpwJ.


28. India’s ‘Makkum’ is related to

A) Coal B) Steel C) Petrol D) Bauxite

ne;jpahtpd; „kf;Fk;‟ gFjpa[ld; bjhlu;g[ila bghUs;.

A) epyf;fup B) nUk;g[ C) bgl;Buhy; D) ghf;irl;


1) The constant current between the conductors would produce a force of 2 × 10-7

Newton per unit length of conductors is one Ampere.

2) Kelvin is the fractions of 1/273.16 of the thermodynamic temperature of the triple

point of water.

rupahd Tw;wpidj; Bju;f:

1) rPuhd kpd;Bdhl;lk; gha[k; nU flj;jpfspilBa 2 × 10-7

epa{l;ld;

tpiria Vw;gLj;jpdhy; kpd;Bdhl;lk; xU Mk;gpau; MFk;.



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2) bfy;tpd; vd;gJ ePupd; Kg;g[s;spapy; btg;g naf;ftpaypd; btg;g

epiyapy; 1/273.16 gpd;d gFjpahFk;.


30. Choose the correctly matched pair.

A) Sir Issac Newton - France

B) Blaise Pascal - England

C) Ada yoata - Isrel

D) Thomas steltz - Germany.

rupahf bghUe;jp cs;s niziaj; Bju;f.

A) ru;Irf; epa{l;ld; - gpuhd;!;

B) gh!;yp gh!;fy; - nA;fpyhe;J.

C) mlhaj; - n!;Buy;

D) jhk!;!;bl!; - b$u;kdp

31. Name the type of joint in which the convex surface of one bone fits into the concave

surface of the other bone.

A) Hinge joint B) Gliding joint C) Pivot joint D) Ball and Jocket joints

niza[k; nU vYk;g[fspy; xd;wpd; Kid Ftpj;Jk; kw;bwhU vYk;g[fs;

Kid FHpe;Jk; fhzg;gLk; K}l;L tif.

A) fPy; K}l;L B) tGf;F K}l;L C) Kis K}l;L D) ge;J Kid K}l;L

32. Mycoses disease in human is caused by.

A) Fungi B) Algae C) Ferns D) Protozoa

kdpjDf;F Vw;gLk; ikBfhr!; Behapd; fhuzp.

A) g{q;ir B) ghrp C) bguzpfs; D) g[Buhl;BlhBrhth

33. Maximum number of species in India is

A) Mammals B) Birds C) Reptiles D) Insects

ne;jpahtpy; cs;s capupfspy; mjpfst[ cs;s capupfs;.

A) ghYhl;ofs; B) gwitfs; C) Cu;td D) g{r;rpfs;

34. The name of the metal used in Laser Surgery is

A) Holmium B) Indium C) Tallium D) Bhorium

Byru; mWit rpfpr;irpay; gad;gLk; jdpkk;.

A) #hy;kpak; B) nz;oak; C) jhypak; D) Bghupak;



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35. Choose the in correct statement about the properties of anode rays.

1) It consists of material particles 2) It travel in straight line

3) It is Deflected by electric field.

Beu;kpd;tha; fjpu; gz;g[fspy; jtwhdJ?

1) epiwa[ila Jfs;fs; 2) Beu;Bfhl;oy; gazpf;fk;

3) kpd;g[yj;jpy; tpyfyila[k;

A) 1 kl;Lk; B) 2 kl;Lk; C) 3 kl;Lk; D) njpy; VJkpy;iy

36. When the project Tiger was launched

g[ypfs; ghJfhg;g[ jpl;lk; bfhz;L tug;gl;l Mz;L

A) 1975 B) 1973 C) 1972 D) 1970

37. Which of the following is not correct about Amoeba?

1) Amoeba takes liquid foods only.

2) In Amoeba, the digested food reaches the entire body by diffusion.

3) In Amoeba, the undigested food is excreted through its body surfaces.

mkPgh gw;wpa Tw;Wfspy; jtwhdJ vJ?

1) mkPgh jput czit kl;LBk cl;bfhs;fpwJ.

2) mkPghtpy; brupf;fg;gl;l czt[ guty; K}yk; cly; KGtJk;

gut[fpwJ.

3) mkPghtpy; brupf;fg;gl;lhj czt[ cly; Bkw;gug;g[ tHpahf

clypypUe;J btspBaWfpwJ.

A) 1 kl;Lk; B) 2 kl;Lk; C) 3 kl;Lk; D) 2 kw;Wk; 3

38. Consider the following statements.

1) These are chisel shaped teeth in the front of the mouth.

2) They are eight in number.four are present in each jaw.

3) These are used for bitting the food.

The above statements is about?

A) Premolars B) Incisors C) Caninea D) Molars

fPH;fz;l Tw;Wfis Ma;f.

1) thapd; Kd;gFjpapy; cspBghd;W fhzg;gLk;.



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2) xt;bthU jhilapYk; ehd;F vd bkhj;jk; vl;L gw;fs;.

3) czit fog;gjw;F cjt[git.

nJ vt;tif gw;fs;?

A) Kd;filtha;gy; B) btl;Lg;gy; C) Bfhiug;gy; D) gpd;filtha; gy;

39. Which of the following is not a functions of the skin?

A) Protects the inner parts of the body.

B) Generate heat required for maintain our body temperature.

C) Works as an excretory organ

D) Acts as a sense organ.

fPBH cs;stw;wpy; vJ Bjhypd; gzpmy;y?

A) cly; cs;cWg;g[fs; ghJfhg;g[

B) clypy; btg;gepiyia xBu rpuhf itj;Jf; bfhs;s Bjitahd

btg;gj;ij cw;gj;jp bra;tJ.

C) fHpt[ePf;f cWg;ghf bray;gLfpwJ.

D) czu;cWg;ghf bray;gLjy;


1) The hydrophytes stem is thick, short and spongy with air spaces to float in water.

2) The process of taking out threads from the cocoon is called Reeling.


1) ePu;thH; jhtuA;fs; ePupy; kpjg;gjw;F Vw;wthW jz;L, Fl;ilahd gq;R

Bghd;w fhw;wiwfisf; bfhz;oUf;Fk;.

2) gl;Lf; Tl;oypUe;J niHfisg; gpupj;bjLf;Fk; Kiwf;F RUSjy;

vd;W bgau;.


41. Which of the following is not an application of concave mirror?

A) Solar cooker B) Shaving mirror C) Dentists D) Rear view mirror in

automobiles

gpd;tUtdtw;Ws; vJ “FHp mo”apd; gad;fspy; jtwhdJ?

A) R{upa mLg;g[ B) Kfr; rtuk; bra;a[k; Mo

C) gy;kUj;Jtk; D) thfd gpd;g[w Mo



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42. An electric cell is a device.

A) Which converts electric energy into chemical energy.

B) Which converts tidal energy into electric energy.

C) Which converts chemical energy into electric energy.

D) Which converts electric energy into tidal energy.

kpd;fyk; vd;gJ.

A) kpd;dhw;wiy Btjp Mw;wyhf khw;Wk;.

B) ePu;k Mw;wiy kpd;dhw;wyhf khw;Wk;.

C) Btjp Mw;wiy kpd;dhw;whyhf khw;Wk;.

D) kpd;dhw;wiy ePu;k Mw;wyhf khw;Wk;

43. Displacement for the shortest distance between two points is.

A) Speed B) Velocity C) Displacement D) None of the above

nU g[s;spfSf;F nilg;gl;l Beu;Bfhl;Lj; bjhiyt[.

A) Btfk; B) jpirBtfk; C) nlg;bgau;r;rp D) njpy; VJkpy;iy.

44. Choose the correct statements.

1) Acids contain replaceable Hydrogen Atoms.

2) Burning of a candle is an example of chemical change.


1) mkpyA;fs; nlg;bgau;r;rp bra;aj;jf;f i#l;u$idg; bgw;Ws;sd.

2) bkGF vupjy; vd;gJ Btjp khw;wk; MFk;.

A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJkpy;iy.

45. A Light year is____________

xU xsp Mz;L vd;gJ._______

A) 1.496 × 1012

K.m B) 9.46 × 1012

K.m

C) 9.46 × 1010

K.m D) 1.496 × 1010

K.m


Shape Formula

a) Triangle 1) 12

b) Circle 2) 1b

c) Square 3) 1/2bh

d) Rectangle 4) 𝜋r2

bghUj;Jf:



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totk; tha;g;ghL

a) Kf;Bfhzk; 1) 12

b) tl;lk; 2) 1b

c) rJuk; 3) 1/2bh

d) brt;tfk; 4) 𝜋r2

a b c d

A) 4 3 2 1

B) 3 4 2 1

C) 4 3 1 2

D) 3 4 1 2

47. The base that found in the window Cleaner is.

A) Calcium Hydroxide B) Magnesium Hydroxide

C) Ammonium Hydoxide D) Potassium Hydroxide

fz;zhoia Rj;jk; bra;a[k; bghUspy; cs;s fhuk;?

A) fhy;rpak; i#l;uhf;irL B) bkf;dPrpak; i#l;uhf;irL.

C) mBkhdpak; i#l;uhf;irL D) bghl;lhrpak; i#l;uhf;irL

48. Choose the following correct facts.

1) Hydrogen is the common element present in all acids. All compounds containing

Hydrogen are not acids.

2) Acids are good conductors of electricity.

3) DNA in cells in the human body controls the features of body.

4) Acids which are soluble in water are called alkalis.

fPBH cs;s Tw;Wfis Ma;f.

1) bghJthf midj;J mkpyA;fspYk; i#l;u$d; cs;sJ. i#l;u$d;

cs;s midj;J Bru;kA;fSk; mkpyA;fs; my;y.

2) mkpyA;fs; kpd;rhuj;ij ed;F flj;Jk;.

3) bry;fspy; cs;s DNA cly;fspy; bray;fisf; fl;Lg;gLj;JfpwJ.

4) ePupy; fiua[k; mkpyA;fs; My;fyp vdg;gLk;.

njpy; rupahdit?

A) 1,2 kw;Wk; 4 B) 2,3 kw;Wk; 4C) 1,3 kw;Wk; 4 D) 1,2 kw;Wk; 3

49. Choose the wrongly matched pair:



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Fuel Calorific value(kcal/Kg)

A) Petrol - 11,500

B) Methane - 13,340

C) Kerosene - 10,300

D) Coal - 9000

jtwhf bghUe;jp cs;s niziaj; Bju;f

vupbghUs; fByhup kjpg;g[ ( Kcal/kg)

A) bgl;Buhy; - 11,500

B) kPj;Bjd; - 13,340

C) kz;bzz;bza; - 10,300

D) epyf;fup - 9000


1) The total renewable water resources of India is estimated at 1,897 Sq/km

2) India is the largest user of ground water in the world.


1) ne;jpahtpy; kPz;Lk; g[Jg;gpf;f Toa ePu;tsk; Xuhz;oy; 1,897

r.fp.kP. MFk;.

2) cyfpy; mjpfkhf epyj;jo ePiu gad;gLj;Jk; ehL ne;jpah.

A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJk;kpy;iy

51. Metastasis is relates to

A) AIDS B) Cancer C) Headache D) STD Dieases

Bkl;lh!;lhrp!; vd;gJld; bjhlu;g[ilaJ.

A) va;l;!; B) g[w;W Beha; C) jiytyp D) STD Beha;fs;


1) Ephedra is a gymnosperms 2) Human bones are not solid.


1) vgpl;uh $pk;Bdh!;bgu;k; tif jhtuk;.

2) kdpj vYk;g[fs; jplg; bghUl;fs; my;y.


53. Which one of the following is not present in yeast cells?

A) Chlorophyll B) Vacuole C) Glycogen D) Nucleus



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N!;l; bry;ypy; fhzg;glhjJ vJ?

A) gRA;fzpfk; B) thf;FBthy; C) fpiff;Bfh$d; D) cl;fU

54. Pathogen of the disease Laptospirosis is

A) Virus B) Bacteria C) Fungi D) Protozoan

Byg;Blh!;igBuhrp!; Behapd; fhuzp.

A) itu!; B) ghf;Oupah C) g{q;ir D) g[Buhl;BlhBrhth

55. Blood is which type of tissue.

A) Epitelial Tissue B) Vascular tissue C) Connective Tissue D) Nerve Tissue

uj;jk; vt;tif jpR?

A) vgpjPypa jpR B) flj;J jpR C) nizg;g[ jpR D) euk;g[ jpR

56. Choose the wrongly matched pair.

Animal Sanctuary

A) Lion tailed monkey - Mudanthurai kalakkad

B) One horned Rhinoceros - kazinranga.

C) Asiatic lion - Bandipur

D) Grey heron - Vedanthangal

jtwhf bghUe;jp cs;s niziaj; Bju;f.

tpyA;F ruzhyak;.

A) rpA;fthy; FuA;F - Kz;le;Jiw fzf;fhL.

B) xw;iwbfhk;g[ fhz;lhkpUfk; - fhrpuA;fh

C) Mrpa rpA;fk; - ge;jpg;g{u;.

D) ruk;gy; ehiu - Btle;jhA;fy;


Act Year

a) Water (Prevention and control

Of pollution ) Act - 1) 1981

b) Air( prevention and Control of

Pollution)Act - 2) 1986



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c) Environment( Protection) Act - 3) 1974

bghUj;Jf:

rl;lk; Mz;L

a) ePu; (khRghL fl;Lg;ghL) rl;lk; 1) 1981

b) fhw;W (khRghL fl;Lg;ghL)rl;lk; 2) 1986

c) Rw;Wr;r{Hy; (ghJfhg;g[)rl;lk; 3) 1974

a b c

A) 1 2 3

B) 3 1 2

C) 2 3 1

D) 3 2 1

58. Aluminium present in earth’s crust is

g[tp xl;oy; cs;s mYkpdpaj;jpd; mst[

A) 8.1% B) 2.1% C) 2.5% D) 27.7%


1) The loudness of the sound depends on its Amplitude.

2) An optical fiber is a device based on the principle of Total internal Reflection.


1) Xypapd; kjpg;g[ mjd; tPr;ir bghWj;J mika[k;.

2) fz;zho xsp niH KG mf vjpbuhspg;g[ jj;Jtj;ij mog;gilahf

bfhz;lJ.


60. Consider the following regarding Total Internal Reflection and choose the correct.

1) The light must travel from a denser medium to a rarer medium.

2) The angle of incidence must be lesser than the critical angle

KG mf vjpbuhspg;g[ gw;wpa Tw;Wfis rupahd Tw;wpidj; Bju;f.

1) Xsp mlu;kpF Clfj;jpypUe;J mlu; Fiw clfj;jpw;F bry;Yk;.

2) gLBfhzj;jpd; kjpg;g[ khWepiy Bfhzj;jpid tpl Fiwthf nUf;f

Btz;Lk;.


61. Which of the following is not a non contact forces?



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A) Force of friction B) Magnetic force

C) Gravitational force D) Electro static force

fPH;fz;ltw;Ws; vJ bjhL tpir MFk;?

A) cuha;t[ tpir B) fhe;j tir

C) epiykpd; tpir D) g[tpNu;g;g[ tpir


Quantity SI unit

a) Electric Current 1) Candela

b) Luminous Intensity 2) Mole

c) Amount of Subsstance 3) Ampere

d) Temperature 4) Kelvin

bghUj;Jf:

mst[ myF

a) kpd;Bdhl;lk; 1) Bfz;oyh

b) xspr; brwpt[ 2) Bkhy;

c) bghUspd; mst[ 3) Mk;gpau;.

d) btg;gepiy 4) bfy;tpd;

a b c d

A) 3 1 4 2

B) 1 3 2 4

C) 3 1 2 4

D) 1 3 4 2

63. In fractional distillation Crude oil diesel is obtained in the temperature of.

bgl;Buhypak; gFj;J toj;jypd; BghJ Ory; ve;j btg;g epiyapy;

btspahFk;?

A) 160 – 250 ℃ B) 250 – 300 ℃ C) 300 – 350 ℃ D) 350 – 400 ℃

64. 1000kg of coal contains the amount of coke, ammonia and coal gas respectively is

1000 fp.fp. epyf;fupapy; fpilf;Fk; fy;fup, mBkhdpah, epyf;fup tha[

Mfpatw;wpd; mst[fs;.

1) 700 kg 2) 100 litres 3) 400 m3

A) 3,1,2 B) 1,2,3 C) 2,1,3 D) 1,3,2

65. Consider the following facts.



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1) The properties of anode rays depend upon the nature of gas present in the discharge

tube.

2) Proton is produced when one electron is removed from one hydrogen atom,.

3) The size of atom is 10 -10

m


1) Bju;kpd;tha; fjpu;fspd; gz;g[fs; kpd;dpwf;f FHhapd; tha[tpd;

jd;ikia rhu;e;J mika[k;.

2) i#l;u$d; mZtpypUe;J xU vyf;l;uhid ePf;Fk;BghJ xU

g[Buhl;lhd; fpilf;Fk;.

3) mZf;fspd; mst[ 10 -10

m vd;gjpy; mika[k;

njpy; rupahdJ?

A) 1 kl;Lk; B) 2 kl;Lk; C) 3 kl;Lk; D) midj;Jk;

66. Match the following

Common Name Chemical Name.

a) Baking Soda 1) Calcium oxide.

b) Bleaching powder 2) Sodium bicarbonate

c) Washing soda 3) Calcium carbonate

d) Quick lime 4) Calcium oxychloride.

e) Lime Stone 5) Sodium Carbonate

bghUj;Jf:

bghJg; bgau; Btjpg;bgau;.

a) buhl;o Brhlh 1) fhy;rpak; Mf;i!L

b) ryitj; Jhd; 2) Brhoak; ig-fhu;gBdl;.

c) ryitBrhlh 3) fhy;rpak; fhu;gBdl;.

d) Rz;zhk;g[ fy; 4) fhy;rpak; Mf;!pFBshiuL

e) Rl;l Rz;zhk;g[ 5) Brhoak; fhu;gBdl;

a b c d e

A) 2 4 5 3 1

B) 2 4 5 1 3

C) 4 2 5 1 3

D) 2 4 1 5 3



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Name of the element Latin name

a) Lead 1) Stannum

b) Antimony 2) Plumbum

c) Tin 3) Wolfram

d) Tungsten 4) Stibium.

bghUj;Jf:

jdpkA;fspd; bgau; yj;jPd; /fpBuf;f bgau;.

a) byl; 1) !;Bldk;.

b) Mz;okzp 2) g;sk;gk;

c) od; 3) cy;g;uk;.

d) lA;!;ld; 4) !;ogpak;

a b c d

A) 2 4 3 1

B) 4 2 1 3

C) 4 2 3 1

D) 2 4 1 3

68. Which one of the following is not a gas?

A) Neon B) Gallium C) Xenon D) Argon.

fPBH cs;stw;wpy; vJ tha[g; bghUs; my;y?

A) epahd; B) fhypak; C) brdhd; D) Mu;fhd;

69. Which is not correct about ‘Biopal’?

1) It is produced by the micro organism known as Alcaligena

2) It is an Aritifical plastic.

3) It is a Homopolymer Plastic.

4) It is fully biodegradable

“g;Bahghy;” gw;wpa Tw;Wfspy; jtwhdJ?

1) my;fhyp$d; vd;w Ez;Zapu;fshy; cUthf;fg;gLfpwJ.

2) braw;if gpsh!;of;.

3) nJ xU B#hBkh ghypku;.

4) KGikahf kf;fpg;BghFk;.



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A) 1 kl;Lk; B) 2 kl;Lk; C) 3 kl;Lk; D) 4 kl;Lk;

70. Consider the following statements.

1) Eye irritation 2) Lung Cancer 3) Asthma

The pollutant that responsible for the above is.

A) Carbon monoxide B) Carbon dioxide

C) Nitrogen oxide D) Sulphur dioxide


1) fz; vupr;ry; 2) g[w;WBeha; 3) M!;Jkh.

ntw;iw Vw;gLj;Jk; khRg;bghUs;.

A) fhu;gd; Bkhdhf;irL B) fupakpy tha[

C) iel;u$d; Mf;irL D) fe;jf il Mf;irL

71. For the first time, who propounded that the animals do shift their habitat in response to

variations in seasons.

A) Salim Ali B) Aristotle C) Mohamed Ali D) Johnson

tpyA;Ffs; jA;fs; thHplj;ij gy;BtW gUt fhyA;fspy; khw;wpf;

bfhs;fpd;wd vd Kjypy; Twpatu;.

A) ryPk; myp B) mup!;lhl;oy; C) KfkJ myp D) $hd;rd;

72. In India, when was cheetah was declared as an extinct animal?

rpWj;ij ne;jpahtpy; mHpe;j ndkhf mwptpf;fg;gl;lJ?

A) 1972 B) 1965 C) 1950 D) 1985

73. Choose the correctly matched statement.

Activity Hormone

1) Reduces blood glucose - Insulin

2) Increases blood glucose - Insulin.

3) Reduces blood glucose - Glucagon.

4) Increases blood glucose - Glucagon.

rupahf bghUe;jp cs;s niziaj; Bju;f.

bray; #hu;Bkhd;.

1) uj;j ru;f;fiu mst[ Fiwg;g[ - nd;Rypd;.

2) uj;j ru;f;fiu mst[ mjpfupg;g[ - nd;Rypd;.



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3) uj;j ru;f;fiu mst[ Fiwg;g[ - FSf;Bfhfhd;

4) uj;j ru;f;fiu mst[ mjpfupg;g[ - FSf;Bfhfhd;

A) 1 kw;wk; 3 B) 2 kw;Wk; 3 C) 1 kw;Wk; 4 D) 1 kw;Wk; 2

74. Choose the incorrect about Human Eye?

A) Retina is present, Retina is a sensitive part.

B) The fovea are densely packed with cone cells.

C) The Rod cells are sensitive to different colour of lights.

D) The lens is elastic and biconvex in shape.

kdpj fz; cs; mLf;F gw;wpa Tw;Wfspy; jtwhdJ?

A) tpHpj;jpiu cs;sJ. tpHpj;jpiu czu;t[s;s gFjpahFk;.

B) Bghgpah gFjpapy; Tk;g[ bry;fs; mjpfKs;sd.

C) cUis bry;fs; gytpj xspfis ghu;f;f cjt[fpwJ.

D) tpHp byd;!; nUg[wk; Ftpe;j kPd;jd;ik bfhz;lJ.

75. Choose the cell organizer?

A) Nucleus B) Chromatin Reticulum

C) Nucleolus D) Chromosome

bry; mikg;ghsu; vd miHf;fg;gLtJ

A) cl;fU B) FBuhBkl;od; tpiyg; gpd;dy;

C) cl;fUkzp D) FBuhBkhBrhk;


1) Based on functions, bacteria can be classified into four types.

2) 1 Micron is 1/1000 millimeter.


1) ghf;oupahit bray; mog;gilapy; ehd;F tifahfg; gupf;fyhk;.

2) 1 ikf;uhd; vd;gJ 1/1000 kpy;yp kPl;lu; MFk;.


77. Choose the correctly matched.

Gland Hormone.

1) Ovaries - Testosterone.

2) Testes - Oestrogen.



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3) Ovaries - Progesterone.

4) Testes - Testosterone.

rupahd niziaj; Bju;f.

Rug;gp Rug;g[

1) mz;lfk; - bl!;Blh!;Ouhd;

2) tpe;jfk; - N!;oBuh$d;

3) mz;lfk; - g[Buh$!;Ouhd;

4) tpe;jfk; - bl!;Blh!;Ouhd;.

A) 1 kw;Wk; 2 B) 2 kw;Wk; 3 C) 3 kw;Wk; 4 D) 1 kw;Wk; 4

78. Which of the following regulates blood pressure during stress?

A) Thyroxine B) Adrenalin C) Insulin D) None of these

kd mGj;j fhyj;jpy; uj;j mGj;jj;ij rPuhf;FtJ.

A) ijuhf;!pd; B) ml;uPdypd; C) nd;fypd; D) njpy; vJkpy;iy.

79. When a dormant seed sprouts, its starch is converted into.

A) Simple sugar B) Compound sugar C) Protein D) Carbohydrate

tpijfs; Kidj;j gpd;g[ mjpy; cs;s !;lhu;r; vd;dthf khWk;?

A) vspa ru;f;fiu B) Tl;L ru;f;fiu

C) g[ujk; D) fhu;Bgh i#l;Bul;

80. Number of autosomes in Human body is

kdpj clypy; vs;s Ml;BlhBrhk;fspd; vz;zpf;if.

A) 23 B) 22 C) 44 D) 46


1) The period of oscillation is the reciprocal to the frequency.

2) Bats use ultrasonic waves for their flight.


1) miyt[f; fhyk; mjpu;btd;dpd; jiyfPH; kjpg;g[f;F rkk;.

2) btsthy;fs; gwg;gjw;F kPbahypiag; gad;gLj;jp jpiria

mwpfpd;wd.


82. Number of tiny inter locked bones in middle ear of human body is



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kdpj eLr;brtpapy; cs;s gpizj;j vYk;g[fspd; vz;zpf;if.

A) Two B) Four C) Five D) Three

83. The least distance for a distinct vision is

bjspt[f; fhl;rpapd; kPr;rpW bjhiyt[

A) 25 kP B) 25kp.kP C) 25 br.kP D) 25 fp.kP.

84. The direction of light deviation in a medium depends on.

A) Density of the media B) Refraction number of media.

C) Nature of the media D) Weight of the media.

Clfj;jpd; xsp tpyfy; jpir vjid rhu;e;J mika[k;?

A) Clfj;jpd; mlu;j;jp B) Clfj;jpd; xsptpyfy; vz;

C) Clfj;jpd; jd;ik D) Clfj;jpd; vil

85. On the basis of Laws of Reflection, the angle of incidence is.

A) Lesser than the angle of reflection B) Greater than the angle of reflection.

C) Equal to the angle of reflection D) None of the above.

Vjpbuhspg;g[ tpjpapd; go gLBfhzk;.

A) vjpbuhspg;g[ Bfhzj;jpid tpl Fiwt[

B) vjpbuhspg;g[ fhzj;jpid tpl mjpfk;.

C) vjpbuhspg;g[ Bfhzj;jpw;F rkk;.

D) njpy; VJkpy;iy

86. What is the colour of potassium permanganate in cold water when it is heated slowly?

Fspu;e;j ePupy; cs;s bghl;lhrpak; gu;khA;fBdl;il r{LgLj;jpdhy;

btspahFk; epwk;.

A) Red B) Blue C) Green D) Violet

87. The transfer of heat due to the actual movement of particles called as.

A) Conduction B) Convention C) Radiation D) None of these

K}yf;TWfspd; cz;ikahd naf;fj;jhy; btg;gk; gut[k; Kiw.

A) btg;g flj;jy; B) btg;g rydk;

C) btg;g fjpu;tPry; D) njpy; VJkpy;iy

88. Consider the following facts.

1) Rain clouds are electrically charged



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2) Upper portion of the clouds carries negative charges.

3) The enormous amount of heat produced during lightening causes the air mass to

contract.

4) Lightning carries lot of energy and heat.

Find the wrong statements:


1) kiH BkfA;fs; kpd;Dhl;lA;fisg; bgw;Ws;sd.

2) Bkfj;jpd; Bky; gFjpapy; mjpf vjpu; kpd;Dhl;lk; bfhz;oUf;Fk;.

3) kpd;dy; cz;lhFk; BghJ Vw;gLk; kpfg; bgUkst[ btg;gk; fhw;iw

RUA;fr; bra;a[k;.

4) kpd;dy; bgUkst[ Mw;wy;, btg;gk; bfhz;Ls;sJ.

njpy; jtwhdJ vJ?

A) 1 kw;Wk; 2 B) 2 kw;Wk; 3 C) 1,3kw;Wk; 4 D) 2,3 kw;Wk; 4

89. The Charge acquired by the glass rod when it is rubbed with silk is _____ . The charge

acquired by the plastic rod when it is rubbed with wool is _________.

A) Positive, positive B) Negative, Negative

C) Positive, Negative D) Negative, positive

fz;zho jz;L gl;L Jzpapy; Bja;f;fg;gLk; BghJ bgwg;gLtJ

_______ kpd;Bdhl;lk; . gpsh!;of; jz;L fk;gspj; Jzpapy;

Bja;f;fg;gLk;BghJ bgwg;gLtJ ________ kpd;Bdhl;lk;.

A) Beu;,Beu; B) vjpu;,vjpu; C) Beu;,vjpu; D) vjpu;,Beu;


1) An atom is said to be electrically charged when the number of protons and number of

electrons is not equal.

2) Charged objects can have either positive charge (or) negative charge.


1) xU mZtpd; vyf;l;uhd; kw;Wk; g[Buhl;lhd;fspd; vz;zpf;if rkk;

ny;yhjBghJ me;j mZkpd; Rik cilajhff; fUjg;gLk;.

2) kpd; Rik bgw;w bghUl;fs; Beu;kpd; Rik my;yJ vjpu;kpd; Rik

cilajhfBth nUf;Fk;.




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91. During silver electroplating process, the cathode, anode and electrolytes respectively

A) Iron, Zinc, Zinc Sulphate B) Iron, Silver, Silver Nitrate.

C) Silver, Silver, Silver Nitrate D) Silver, Gold, Gold Chloride.

bts;sp kpd;g{r;R bra;ag;gLk;BghJ vjpu;kpd; tha;, Beu;kpd; tha;, kpd;

gFsp KiwBa.

A) nUk;g[, Jj;jehfk;, Jj;jehf ry;Bgl;.

B) nUk;g[, bts;sp, bts;sp iel;Bul;.

C) bts;sp, bts;sp,bts;sp iel;Bul;.

D) bts;sp,jA;fk;,jA;f FBdhiuL

92. When current passes through the copper sulphate solution, positive ion and negative ion

respectively is.

A) Copper, Copper B) Sulphate, copper

C) Sulphate, Sulphate D) Copper, Sulphate

fhg;gu; ry;Bgl; fiurypy; kpd;rhuk; gha[k;BghJ Beu;kpd; madp, vjpu;kpd;

madp KiwBa.

A) fhg;gu;, fhg;gu; B) ry;Bgl;, fhg;gu;

C) ry;Bgl;, ry;Bgl; D) fhg;gu;,ry;Bgl;


1) In a serial circuit same amount of electric current flows through all the bulbs.

2) In a serial circuit the current can flow only in one direction.


1) bjhlu; Rw;wpy; midj;J kpd; tpsf;Ffs; tHpahft[k; xBu mst[

kpd;Bdhl;lk; gha[k;.

2) bjhlu; Rw;wpy; kpd;Bdhl;lk; xBu jpirapy; gha[k;


94. The Pressure applied to an enclosed liquid gets transmitted equally to every part of the

liquid was propounded by.

A) Torricelli B) Pascal C) Ottavaun D) Henry

K}lg;gl;l epiyapy; xU jputj;jpd; xU gFjpapy; bfhLf;fg;gLk; mGj;jk;

midj;J gFjpfspYk; rkkhff; flj;jg;gLfpwJ vd;gij Twpatu;?



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A) lhupbry;yp B) gh!;fy; C) Ml;Blhthd; D) b#d;wp


1) Liquid pressure depends on density of a liquid.

2) Liquid exerts equal pressure at the same depth.


1) jputA;fspy; mGj;jk; mjd; mlu;j;jpiag; bghUj;jJ.

2) jputA;fs; xBu MHj;jpy; xBu mst[ mGj;jj;ijf; bfhLf;fpd;wd.

A) 1 Only B) 2 Only C) Both D) None of the above

96. Atmospheric pressure at sea level is (approximately).

fly; kl;l mstpy; tspkz;ly mGj;j kjpg;g[

A) 10-5

N/m2 B) 10

5 N/m

-2 C) 10

5 N/m

2 D) 10

-5 N/m

-2

97. If a liquid exerts the force of 100N over an area of 2m2, the pressure is?(N/m

2)

xU jputk; 100 ePa{l;ld; tpiria 2m2 gug;gpy; brYj;jpdhy; mjd;

mGj;jk; ?(N/m2)

A) 200 B) 100 C) 50 D) 10

98. Erymothecium ashbyi used in the synthesis of Vitamin B (Riboflavin), is a

A) Algae B) Fungi C) Protozoa D) Gymnosperms

itl;lkpd; B (upBghgpBstpd;) jahupg;gpy; cjt[k; vupBkhjPrpak; m!;}|g;

xU

A) My;fh B) g{q;ir C) g[Buhl;BlhBrhth D) $pk;Bdh!;bgu;k;


1) Class hepaticae having undifferentiated Thallus.

2) In class Anthocerotae protonemal stage absent.


1) b#ghoBf BtWghL milahj clyk; bfhz;lJ.

2) Me;j;Bjh brul;Bl tFg;gpy; g[Buhl;Blhdpkh epiy ny;iy.

A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJkpy;iy.

100. Which one of the following is not matched with others?

A) Psilotum B) Lycopadium C) Pinus D) Equisetum.

fPBH cs;stw;wpy; kw;wtw;BwhL BtWgl;lJ vJ?



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A) i!Byhl;lk; B) iyBfhBghoak; C) igd!; D) Nf;a[rpl;lk;.



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8th science

ALL Rights Are Reserved

The Above Mentioned Topic & Contents are prescribed is Completely Prepared by

Chennai IAS Academy .Copying of Contents & Taking Photo copies Are Considered as the violation of

the Rights. According to the copyright Acts.

1 C 21 D 41 D 61 A 81 C

2 B 22 D 42 C 62 C 82 D

3 D 23 B 43 B 63 B 83 C

4 C 24 A 44 C 64 B 84 A

5 C 25 A 45 B 65 D 85 C

6 A 26 B 46 D 66 B 86 D

7 C 27 A 47 C 67 D 87 B

8 A 28 C 48 D 68 B 88 B

9 C 29 C 49 D 69 B 89 C

10 A 30 C 50 C 70 D 90 C

11 B 31 A 51 B 71 B 91 B

12 A 32 A 52 C 72 C 92 D

13 A 33 D 53 A 73 C 93 C

14 B 34 A 54 B 74 C 94 B

15 C 35 D 55 B 75 C 95 C

16 B 36 B 56 C 76 B 96 C

17 D 37 A 57 B 77 C 97 C

18 A 38 B 58 A 78 B 98 B

19 B 39 B 59 C 79 A 99 C

20 C 40 C 60 A 80 C 100 C



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Why to choose Chennai IAS academy? Chennai IAS has a Special focus for TNPSC Examination.

We Divides The TNPSC aspirants into Three stages.

S.NO Stages Level of Training

1. Stage 1 (silver)

Only classes and class test will be conducted periodically.

2. Stage 2 (golden)

After completing stage 1 the students will enter to the stage 2. In stage 2 the students will be allotted in groups. focus for each and every subjects and individual subjects tests will be conducted to the students.

3. Stage 3 (platinum)

Full test series will be conducted in stage 3.

After crossing the Three stages in TNPSC students will feel

confident to crack the exams.

How we Treat This Course

We covers the basic syllabus in samacheer kalvi books

Then we coach the students with major concepts

Weekly test for subjects which we gone through every week

We will make sure that every students striving towards success by

periodically evaluating their performance in tests

Materials will provide in the institute



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www.chennaiiasacademy.com

“ ALL THE BEST “



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CHENNAI IAS ACADEMY Vellore TNPSC · PDF fileCHENNAI IAS ACADEMY – Vellore / 9043 211...

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