vellore tnpsc · prelims & mains samacheer kalvi questions 7th science with key answers # 5,...

CHENNAI IAS ACADEMY – Vellore / 9043 211 311 / 411

: www.Chennaiiasacademy.com / : chennaiiasacademyvellore

CHENNAI IAS ACADEMY

Vellore

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

Prelims & Mains

SAMACHEER KALVI QUESTIONS

7th science with key answers

# 5, old by-Pass Road, National Theatre

( Near- opp - Benzz Park ) Vellore- 4 Website : WWW.Chennaiiasacademy.com

Facebook : chennaiiasacademy vellore

www.Padasalai.Net www.TrbTnpsc.com

http://www.trbtnpsc.com/2013/09/tnpsc-group-2-group-4-vao-exam-study.html

www.Padasalai.Net



7TH

SCIENCE

1. Choose the wrongly matched pair

kingdom Example

A) Monera - Cyanobacteria

B) protista` - Laminaria

C) Fingi - Penicillium

D) plantae - Pinus

rhpahf bghUj;jhj niziaj; Bjh;f

cyfk; vLj;Jf;fhl;L

A) bkhdpuh - raBdh ghf;Ohpah

B) g[Buho!;lh - yhkpBdhpah

C) g{q;ir - bgdprpypd;

D) jhtuk; - igd!;

2. Choose the correct statement.

1)State of matter cannot be transformed into another state by changing temperature.

2)Gases can be compressed easily.

rhpahd Tw;wpiz Bjh;f

1)btg;g epiyia khw;Wtjhy; bghUspd; epiy khwhJ.

2)tha[f;fis vspjpy; mKj;j Koa[k;.

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

3. The area enclosed indide a square of side 1m is

A) One cube metre B) One square metre

C) One cent D) One kilometer

xU kPl;lh; gf;fk; bfhz;l rJuk; xd;wpDs; milgLk; gug;g[

A) xU fd kPl;lh; B) xU rJu kPl;lh;

C)xU brd;l; D) xU fpByh kPl;lh;

4. Mercury is ……..denser than water.

A) 13.6 times B) 13.6 litre C) 13.06 gram D) 13.6 metre

ghjuhrj;jpd; mlh;j;jp ePhpd; mlh;j;jpiag; Bghy;………mjpfk;.

A) 13.6 klA;F B) 13.6 ypl;lh; C) 13.6 fpuhk; D)13.06 kPl;lh;



www.Padasalai.Net



5. Match the following

Bee Name of the bee

A) Rock bee 1) Drones

B) Male bee 2) Apis florea

C) Little bee 3) Apis dorasata

D) Indian bee 4) Apis Indica

xsp bgah;

A) ghiw BjdP 1) l;Buhd;

B) Mz; BjdP 2) Vgp!; g[Bshkpah

C) rpwpa BjdP 3) Vgp!; lhh;Brl;lh

D)ne;jpa BjdP 4) Vgp!; nz;ofh

A B C D

a) 1 3 4 2

b) 3 1 4 2

c) 1 3 2 4

d) 3 1 2 4


Plant Example

a) Herns 1) Maize

b) Mesophytes 2) Paddy

c) Submegd Hydrophytes 3) Vallisneria

d) Floating Hydrophytes 4) Water lily

bghUj;Jf

jhtuk; vLj;Jfhl;L

a) rpW bro 1) kf;fhBrhsk;

b) nilepiy jhtuk; 2) bey;

c) K}H;fpa ePh;thH; jhtuk; 3) thyp!;Behpah

d) kpjf;Fk; ePh;thH; 4) my;yp

jhtuA;fs;



www.Padasalai.Net



A) 1 2 4 3

B) 2 1 3 4

C) 1 2 3 4

D) 2 1 4 3


1) Carrot and radish are having tap root system.

2) Roots that grow from any part of the plant other than radical are called adventitious

roots.

A) 1 only B) 2 only C) Both D) None of these

rhpahd Tw;wpid Bjh;f

1) Bful;, Ks;sA;fp Bghd;wtw;wpy; MzpBth; bjhFg;g[ cs;sJ.

2) Kid Bth; jtpu jhtuj;jpd; ve;jg; gFjpapYk; tsh;tJ Btw;wpl Bth;

MFk;.

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

8. Choose the wrongly matched pair.

A) Runners - Pumpkins

B) Phylloclade - Opuntia

C) Stolen - Grass

D)Stem tendril - Passion flower

rhpahf bghUe;jhj niziaj; Bjh;f

A) xLjz;L - g{rzp

B) niyj;bjhHpy; jz;L - rg;ghj;jp fs;sp

C) !;Blhyd; - g[y;

D) jz;L gw;W fk;gp - gh!pg;g[Bshuh

9. The propounder of five kingdom classification is

A) T.H. Morgan B) R.H. Whitaker C) J.C.Bose D) K.C.Muller

Ie;Jyf tifg;ghl;oaiy Twpath;

A) T.H khh;fd; B) R.H tpf;Blf;fh; C) J.C Bgh!; D) K.C Ky;yh;

10. Choose the correct statements.

1) The incubation period for hens is 21 days.



www.Padasalai.Net



2) The massive step taken in India to increase egg production by adopring enlightened

practices of poultry is called silver revolution.

rhpahd Tw;wpid Bjh;t[

1) BfhHpfs; mil;fhf;Fk; fhyk; 21 ehl;fs; MFk;.

2)ne;jpahtpy; Kl;il cw;gj;jp mjpfhpf;f bra;ag;gl;lJ bts;spg;g[ul;rp

MFk;.

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


1) Lichens are organisms that consist of a fungus and algae. Fungus livers on Algae’s

body.

2) In human digestive system amylase helps in the digestion of protein.

rhpahd Tw;wpid Bjh;t[

1) iyf;fd;fs; vd;gJ xU My;fh, g{q;ir nilBa fhzg;gLk;

Tl;Laph; thH;f;if MFk;. My;fh clyj;jpd; kPJ g{q;ir tsUk;.

2) kdpj clypy; mikBy!; behjp g[ujk; brhpj;JYf;F cjt[fpwJ.

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

12. The heaciest organ of our body is

A) Skin B) Skeleive System C) Digestive System D)Nervous System

ekJ clypy; kpff; fdkhd cWg;g[

A) Bjhy; B) vYk;g[ kz;lyk;

C)czt[ kz;lyk; D)euk;g[ kz;lyk;


Scientist Country

A) S. Hahnemann - German

B) Galen - Italy

C) C. Oersteel - England

D) Hippo Crates - Greek

jtwhf bghUj;jp cs;s niziaj; Bjh;f

mwptpayhsh; ehL

A) S.#hdpBkd; - b$h;kdp



www.Padasalai.Net



B) Bfyd; - nj;jhyp

C) C.xah;!;bll; - nA;fpyhe;J

D) #pg;Bgh fpuhoy; - fpBuf;fk;

14. Which of the following is not correct about sidha Medicine?

1) It is a Dravidian System of Medicine

2) Sidha medicinal system was founded by a group of 18 spiritual people called

Siddhars.

3) Siva Peruman is the first siddhar.

rpj;j kUj;Jtk; gw;wp Tw;Wfspy; jtwhdJ?

1) jpuhtpl Kiw kUj;Jtk;

2) gjpbdl;L rpj;jh;fs; jhd; ne;j kUj;Jtj; Jiw Bjhd;w moj;jsk;;

kpl;lhh;fs;.

3) rpj;jh;fspy; rptbghUkhis Kjy; rpj;jh; vdfpBwhk;.

A) 1 Only B) 2 Only C) 3 Only D) All

15. Which of the following is not correct about Herbs?

1) It has lots of branches.

2) They do not have a main stem.

3) They do not grow more than one metre in height

4) They are non woody plants.

rpW brhofs; gw;wpa Tw;Wfspy; jtwhdJ.

1) gy fpisfs; cilaJ.

2) bjhspthd ikaj; jz;L mw;wJ.

3) xU kPl;lh; cauj;jpw;Fs; jhd; tsUk;.

4) jz;L fl;il jd;ikaw;wJ;

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

16. The cause of canker disease of Lemon is

A) Bacteria B) virus C) Fungi D) Protozoa

vYkpr;irapd; fHiy Beha;f;F fhuzkhdJ?



www.Padasalai.Net



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


Phylum Examples

a) Mollusca 1) Earthworm

b) Annelida 2) Sea cucumber

c) Aschelminthes 3) Hydra

d) Echinodermata 4) Ascaris

e) Coelenterate 5) Snail

bghUj;Jf.

bjhFjp vLj;Jf;fhl;L

a) bky;Yltp 1)kz;g[K

b) tisjir g[K 2)fly; bts;sp

c) cUisg; g[K 3)i#l;uh

d) Kl;Bjhyp 4) m!;fhhp!;

e) FHpa[lyp 5)ej;ij

a b c d e

A) 1 4 3 2 5

B) 2 5 2 3 1

C) 5 1 4 2 3

D) 4 2 5 1 3


Scientific Name Common Name

A) Columbea Livia - Pigeon

B) Musca Domestica - House fly

C) Lyco Persican Esculantum - Apple

D) Solanum Tuberosum - Potato

jtwhf bghUj;jp cs;s niziaj; Bjh;f

mwprpay; bgah; bghJg;bgah;

A) bfhyk;ghypypah - g[wh

B) k!;fh blhk!;ofh - tPl;L N

C) iyf;Bfh bgh;rpfd; - Mg;gps;



www.Padasalai.Net



v!;Fyhz;lk;

D) brhyhdk; oa[fBuhrk; - cUis

19. Unicellular and smaller multicellular animals give out carbon disoxide by

A) Osmosis B)Diffusion C)Reverse osmosis D) None of the above

xU bry; kw;Wk; gy rpwpa bry; tpyA;Ffs; fhpakpy tha[it vk;Kiwapy;

btspBaw;Wfpd;wd?

A) rt;t{L guty; B) guty;

C) vjph;rt;t{L guty; D) njpy; VJkpy;iy

20. Diaphrgm is

A) Sheet of Nerve B)Sheet of Bones C)Sheet of Muscle D) None of the above

cjutpjhdk; vd;gJ

A) euk;g[ bjhFg;g[ B)vYk;g[ bjhFg;g[

C) jir bjhFg;g[ D)njpy;VJkpy;iy

21. In a food chain carnivore belongs to which of the Trophic level?

A) Second B) fouth C) fifth D) third

czt[ rA;fpypapy; Kjyhk; Cd; cz;zpfs; ve;j Cl;l epiyia

rhh;e;Js;sd?

A) nuz;lhk; B) ehd;fhk; C)Ie;jhk; D) K}d;whk;

22. Temperaate grass land is found in?

A) Uttar Pradesh B)Madhya Pradesh

C) Arunachal Pradesh D) Himachal Pradesh

kpj btg;g kz;lyg; g[ybtspfs; fhzg;gLk; khepyk;

A) cj;jpugpuBjrk; B) kj;jpa gpuBjrk;

C) mUzhr;ry gpuBjrk; D) #pkhr;ry gpuBjrk;

23. Nature Conservation day celebrated on

A) November 10 B)November 15 C) November 20 D) November 25

naw;if ghJfhg;g[ jpdk; bfhz;lg;gLk; ehs;

A) etk;gh; 10 B) etk;gh; 15 C) etk;gh; 20 D) etk;gh; 25

24. World’s Saltiest water body is

A) Dead sea B) Aral Sea C) Lake van D)Great salt lake



www.Padasalai.Net



cyfpy; kpf mjpf cg;g[ jd;ik bfhz;l fly;

A) rhf;fly; B) muy;fly; C)thd;Vhp D) bgUk; cg;g[ Vhp

25. Choose the correct statements

1) Matter is anything that has mass and occupies space.

2) There is no difference in matters that has mass and occupies space.

A) 1 only B) 2 only C) both D)none of these


1) epiw, Fwpg;gl;l nlj;ij milj;Jf; bfhs;Sk; jd;ik bfhz;lit

gUg;bghUl;fs;

2) epiwa[k; nlj;ija[k; bgw;Ws;s vy;yh gUg;bghUl;fSk; xBu

tifahdit MFk;.


1) It is difficult to change the shapes of solides by compression

2) Compressed natural gas is used as a fuel in transport.

A) 1 only B) 2 only C) both D)none of these


1) mKj;jj;jpd; K}yk; jplg; bghUs;fspd; totj;ij khw;WtJ fodk;.

2) mKj;jg;gl;l naw;if tha[Bghf;F tuj;J thfdA;fspy; gad;gLfpwJ.

27. Galvaniztion is

A) Coating of Tin over Iron B)Deposition of Chromium over Iron

C) Deposition of Zinc over Iron D) None of the above

ehfKyk; g[Rjy; vd;gJ

A) bts;spa cByhfj;ij nUk;gpd; kPJ g{Rjy;

B) FBuhkpaj;ij nUk;gpd; kPJ g{Rjy;

C) nUk;gpd; kPJ Jj;j ehfj;ij g{Rjy;

D) njpy; VJkpy;iy


1) Banking soda tastes is sour.

2)Banking soda tastes is bitter.

A) 1 only B)2 only C)both D)none of these



www.Padasalai.Net




1) buhl;o Brhlhtpd; Rit g[spg;g[

2) buhl;o Brhlhtpd; Rit frg;g[

29. When reacts with base, beetroot juice gives which of the following colour

A) Yellow B) pink C)blue D) red

gPl;U}l; rhW fhuj;jpy; jUk; epwk;

A) kq;rs; B) nsq;rptg;g[ C) ePyk; D) rptg;g[

30. Which of the following used as a insecticide?

A) Copper sulphate B)Sodium carbonate

C)potassium Nitrate D) Ferrous sulphate

fPBH cs;stw;wpy; g{r;rp bfhy;ypahf gad;gLtJ vJ?

A) fhg;gh; ry;Bgl; B) Brhoak; fhh;gBdl;

C) bghl;lhl;rpak; iel;Bul; D) bgu!;ry;Bgl;

31. Base area x Height -?

A) Cubic meter B)Volume C)Area D)Square meter

mog;gug;g[ x cauk; =?

A) fdkPl;lh; B) gUkd; C) gug;gst[ D)rJukPl;lh;

32. First pendulum clock was dsigned by

A)Galileo B)Newton C)Edison D)Huygens

KjyhtJ Cry; fofhuj;ij totikj;jth;

A) fypypBah B) ePa{l;ld; C) vord; D)i#b$d;!;

33. Value of Acceleration due to Gravity is

A)9.8 m/s B)9.8 km/s2 C)9.8 m/s

2 D)9.8 m

2/s

g[tpNh;g;g[ KLf;fj;jpd; kjpg;g[

A) 9.8 kP/tp B)9.8 fpkP2tp C)9.8 kP/tp2 D) 9.8 kP2/tp


1)Human body is a best insulator.

2)Oersted conclds that there is a magnetic field around current carryting conductor.

A)1 only B)2 only C)both D) none of these




www.Padasalai.Net



1) kdpj cly; ey;y kpd;fhg;g[ bghUs; MFk;.

2) kpd;Bdhl;lk; bry;Yk; fk;gpia Rw;wp fhe;jg[yk; nUg;gij cWjp

bra;jy; xah;!;bgl;

A)1 only B)2 only C)both D) none of these


Herbal Plants Disease cured

A) Pirandai - 1) Throat infection

B)Milagu - 2)Indigestion

C)Keczhanelli - 3)Cold, cough

D)Thuthvalai - 4)Jaundice

K}ypif Beha;fs; jPh;t[

A) gpuz;il 1) bjhz;il fufug;g[

B) kpsF 2) m$;udk;

C) fPHhbey;yp 3) rsp, nUky;

D) J]Jtis 4) kq;rs; fhkhiy

A) 2 1 3 4

B) 1 2 4 3

C) 2 1 4 3

D) 1 2 3 4

36. Identify the correctly matched pair.

Tree Uses

1) Munberry - Tennis rocket

2)willow - Railway sleeper

3)coconut tree - Cricket Bat

4)Silk cotton tree - Silk

rhpahf bghUe;jpa[s;sij Bjh;e;bjLf;f

kuk; gad;ghL

1) ky;ghp - bld;dp!; kl;il

2) tpy;Byh - uapy; gLf;iffs;

3) bjd;id - fphpf;bfl; kl;il

4) nytk; - gl;L



www.Padasalai.Net



A) 1 only B) 2 and 3 only C) 1and 4 only D) All the above

37. Choose correct sequence of Nutrition

1)Ingestion 2) Digestion 3)absorption 4)decomposition

5)assimilation

czt{l;lj;jpy; cs;s rhpahd epiyfis fz;lwpf?

1)cl;bfhs;Djy; 2)brhpj;jy; 3) cl;fpufpj;jy;

4) kf;fpg;Bghjy; 5) jd;kakhf;Fjy;

A) 2 and 4 only B) 1,2,3,5 only C)1,2,3 only D) All the above

38. Which of the following is a leaf fiber?

A)Aloevera B)Jute C)Cotton D)Plantain

niy ehh;fs; tifia rhh;e;jJ vJ?

A) fw;whiH B) ehh; rzy; C) gUj;jp D)thiH

39. Who invented Advanced Microscope

A) Robert Hooks B)Robert Brown C)john Ray D)Ernst Ruska

etPd Ez;Bzhf;fpia fz;Lgpoj;jth;

A) nuhgh;l; #Pf; B) nuhgh;l; gpbusd;

C) $hd; Bu D) Vh;d!; u!;th

40. When the year of Astronmy was celebrated

ve;j Mz;L rh;tBjr thdpay; Mz;lhff; bfhz;lhlg;gl;lJ

A)2008 B)1999 C)2009 D)2013

41. Who discovered Bacteria?

A)A.V Leewen Hock B)Dr. Perkinjee

C)Robert Hooke D) Schlliden

ghf;Ohpah-it fz;Lgpoj;jth; ahh;?

A) yPrd; #Pf; B)Dr.g{h;fpd;$P C) nuhgh;l;#Pf; D)!;f;yPld;

42. Choose the beneficial activities of Bacteria

1)Curdling o milk 2)Bio fertilizer 3) Decomposing of coastes 4)bio digester

ghf;Ohpahtpd; ed;ikfid Bjh;e;bjLf;f

1) ghiyj; japuhf;FfpwJ. 2) caphp cukhf nUf;fpwJ

3) Fg;gigfis kf;fitj;J cukhf;FfpwJ. 4) caphp brhpkhdp

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



www.Padasalai.Net



43. ‘Farmer’s enemy is?

A)Snail B)Earthworn C) Honey bee D)Locust

tptrhapfspd; vjphp vdf; Fwpg;gplg;gLk; caphpdk;

A) ej;ij B) kz;g[K C) BjdP D)btl;Lf;fpsp

44. Given are the characteristics of the monoct plant. Choose the wrong

1)They have fibrous root system

2)Its leaves have reticulate venation

xU tpj;jpiyj; jhtuj;jpd; gz;g[fs; bfhLf;fg;gl;Ls;sd

1) ry;yp Bth;j;bjhFg;g[ bfhz;lJ.

2) mjd; niyfs; tiyg;gpd;dy; euk;igf; bfhz;lJ.

A) 1 only B) 2 only C) both 1&2 D) neither 1 nor 2

45. Identify the correctly matched

1)Melting of Ice –Irreversible change 2)Batter into Idly-Irreversible change

3)Ripening of fruits- irrevsible chnge

rhpahfg; bghUe;jpa[s;sij fz;lwpf.

1) gdpf;fl;o tUFjy; - kPdh khw;wk;

2) kht[ nl;ypahjy; - kPdh khw;wk;

3) fha; fdpahjy; - kPdh khw;wk;

A)1 only B)3 only C)2and 3only D)1,2and3

46. The dark inner Region of the stem of tree used in construction is called

A)Sap wood B)Teak wood C)Dark wood D)Heardwood

jhtuj;jz;od; fUepwkhd ikag;gFjp vJ?

A) bkd; fl;il B) Bjf;F C)fUj;j fl;il D) #Pah;l; fl;il

47. Which of the following is/are the disadvantage of disposing wastes using land filling

1)It occupies land

2)Produces pleasant smell

3)when the wastes are burnt, it pollutr the air around

4)Joxie substances percolate and pollute the ground water.

epyj;jpy; epug;g[jy; Kiwapdhy; Vw;gLk; jPikfs; vit



www.Padasalai.Net



1) mjpf epyj;ij Mf;fpukpf;Fk;

2) ey;y eWkzk; tPRk;

3)Fg;igfis vhpf;Fk; bghKJ fhw;iw khRgLj;Jk;

4) er;Rg; bghUl;fs; epyj;jo ePhpDs; fye;JtpLk;

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

48. Which of the following are correct regarding spices

1)Only stems of plants are used as spices

2)Spices increase the rate of digestion

3)Kerala is a Spice Garden of India

eWkzg; bghUs;fs; gw;wp vJ rhpahdJ?

1) jhtuA;fspd; jz;Lfs; kl;LBk bghUs;fshf cjt[fpwJ

2) mit brupkhdj; jd;ikia mjpfupf;Fk;

3) ne;jpahtpy; eWkzk;g; bghUs;fspd; Bjhl;lk; vd;W miHf;fg;gLtJ

Bfush

A)only1 B)2only C) 2 and 3 only D) All

49. Identify the correct statement and rigidity

1)Heardwood given strength and rigidity to the plant

2)Heardwood is not infected by the fungus and termite.

rhpahd tpilia Bjh;e;bjLf;ft[k;

1) td;fl;il jhtuA;fSf;F typikia[k; fodj;jd;ika[k; mspf;fpwJ.

2) td;fl;il g{q;irfs;, fiuahd;fshy; mupf;fhJ

A)1 only B)2 only C)both D)none

50. Which plant has largest flower

A) Amorphophallus B)Corypha

C)Helianth us D)Refflesion Titanium

kpfg; bghpa g{f;Fk; jhtuk; vJ?

A) mBkhh;Bghghy;y!; B) fhhpah

C)#Pypahj;jy; D) nuh|g;Byrpahill;lhdpak;


a) Burning of stick 1) Desirable change

b) Earth quake 2) Reversible change



www.Padasalai.Net



c)Making Ornaments 3) Exothermic change

d) Raining 4) Non periodic change

bghUj;Jf

a) jPf;Fr;rp vhpjy; 1) tpUk;gj;jf;f khw;wk;

b) epyeLf;fk; 2) kPd; khw;wk;

c) jA;f mzpfyd;fs; 3) btg;g ckpH; khw;wk;

d) kiH bghHpjy; 4) fhy xHfw;w khw;wk;

A) 3 4 2 1

B) 3 4 1 2

C) 4 3 1 2

D) 4 3 2 1

52. Which of the following is not a fundamental quality

A)Time B)Length C)Mass D) Area

ntw;Ws; vJ mog;gil mstpy; tuhJ?

A) fhyk; B) ePsk; C)epiw D) gug;gst[

53. Unit of mass in C.G.S system is

A)Kilogram B)Gram C) Pound D)Foot

C.G.S Kiwapy; epiwapd; myF vd;d?

A) fpByhfpuhk; B)fpuhk; C) gt[z;L D) mo

54. A Device which is used for measuring mass

A) Tape B) Beam balance C)Sundial D) Scale

epiwia msf;F fUtpfspy; xd;W

A) mst[ ehlh B) rl;lj; juhR C) R{hpaf;fofhuk; D)mst[Bfhy;


a) Periodic Motion - Cocount falling

b) Random Motion - Riding a Bicycle

c)Multipe Motion - Pendulum in a clock

d) Linear Motion - Swimming of Fish

bghUj;Jf

a) rPuiyt[ naf;fk; - BjA;fha;kuj;jpypUe;JtpKtJ

b) jd;dpr;irahd - kpjp tz;oapy; bry;tJ



www.Padasalai.Net



naf;fk;

c) xd;Wf;FBkw;gl;l - fofhu Crypy;

naf;fk; naf;fk;

d) xd;W naf;fk; - ePr;ry; kPd;

A) 4 3 1 2

B) 3 4 1 2

C) 3 4 2 1

D) 4 3 2 1

56. The Konkan coast receives the annual rainfall around

A) 200 -300 cm B) above 300cm C) 100-200cm D)below 50cm

bfhA;fz; flw;iu gFjpapy; bgwg;gLk; Mz;L kiHg;bghHpt[

A) 200-300 br.kP B) 300 br.kP.f;F Bky;

C)100-20 br.kP D) 50 br.kP.f;F Bky;


Annual Rainful Place

a) Below 50cm 1) North East part of Jammu Kashmir

b) 50-100cm 2) Tripura

c) 100-20cm 3) Costal Andhra

d) 200-300cm 4) Bihar

Mz;L kiHg;bghHpt[ nlk;

a) 50 br.kPf;F fPH; 1) $k;K fh&;kPhpd;

tlfpHf;F gFjp

b) 100-200 br.kP 2) jphpg[uh

c)100-200 br.kP 3) flByhu Me;jpuh

d)200-300 br.kP 4) gPfhh;

A) 1 2 4 3

B) 2 1 4 3

C) 2 1 3 4

D) 1 2 3 4


Biome Flora



www.Padasalai.Net



a) Taiga 1) Oak

b)Deciduous forest 2)Ferns

c) Tunder 3) Spruce

d) Tropical rain forest 4) Lichens

bghUj;Jf

caph;Bfhsk; jhtuk;

a) Crpapiyf;fhL 1) xf;

b) niya[jph;fhL 2) bguzpfs;

c)J]e;jpg; gpuBjrk; 3) !;g;U}!;

d)btg;g kz;ly 4) iyf;fz;fs;

kiHf;fhL

A) 3 1 4 2

B) 1 3 4 2

C) 3 1 2 4

D) 1 3 2 4

59. The organ which can helps in the exchange of gases in insects are

A) Skin B) Lungs C) Gills D) Spiracles

g{r;rpfspy; tha[ ghpkhw;wk; eilbgw cjt[k; cWg;g[

A) Bjhy; B) EiuaPuy; C) brt[s; D) fhw;Wj;Jis

60. The father of Taxonomy is

A) John Ray B) Carolus Linnaeus C) Aristotle D) Hippocrates

tifg; ghl;oaypd; je;ij

A) $hd;Bu B) fBuhy!; ypd;Bda!;

C)mhp!;lhl;oy; D)#pg;Bghfpuho!;

61. How Many cubes with each side 1 meter is equal to cube with the volume of 10 m3?

bghUs; xd;wpd; gUkd; 10 f.kP vdpy; mij xU kPl;lh; gf;fk; bfhz;l

vj;jid fd rJuA;fSf;F rkkhf fUjyhk;?

A)20 B)5 C)100 D)10



www.Padasalai.Net



62. The first electric cell was developed by

A) Alessandro Volta B) Luigi Galvani

C) Charles Wood D)Ampere

Kjy; kpd;fyj;ij jahpj;jth;

A) mbyrhd;Buh Bthy;l;lh B) Yfp fhy;thdp

C)rhh;y!; t[l; D)Mk;gpah;

63. Migratory birds found in the Biome of

A)Deciduous forest B) Desert C) Savannah D)Tundra

nlk; bgaUk; gwitfs; fhzg;gLk;

A) niya[jph; fhL B) ghiytdk;

C) g[y;btspfs; D)J]e;jpug;gpuBjrk;

64. Sanamavu Forest in which district?

A) Dharmapuri B)Vellore C)krishnagiri D) Salem

rdkht[ fhL mike;Js;s khtl;lk;

A) jUkg[hp B) BtY]h; C)fpU&;zfphp D) Bryk;

65. Choose the wrongly matched pair

A) Earth day - February 02

B) Natural Resources - October 05

C) World Environment - June 05

D) World Forest Day - March21

rhpahf bghUe;jhj niziaj; Bjh;f

A) g[tpjpdk; - gpg;uthp 02

B) naw;if tdjpdk; - mf;Blhgh; 05

C) cyf Rw;WR{y;jpdk; - $Pd; 05

D) cyf fhLfs;jpdk; - khh;r;21


Forest Location

a) Temperate grassland 1) Canada,Russia

b) Deciduous 2) Eastern Asia

c)Taiga 3)Western Australia,Eastern Pakistan



www.Padasalai.Net



d) Savanna 4) Afica

e)Tropical Rain forest 5) North and south

America

bghUj;Jf.

fhLfs; miktplA;fs;

a) kpjbtg;g kz;lyg; 1) fdlh,u&;ah

gFjp

b) niya[jph; fhLfs; 2) fpHf;F Mrpah

c) Crpapiy fhLfs; 3) Bkw;F M!;jpBuypah

fpHf;F gfp!;jhd; gFjp

d) g[y;btsp gpuBjrk; 4) Mg;gphpf;fh

e) btg;g kz;ly 5) tlf;F kw;Wk;

kiHf;fhLfs; bjw;F mbkhpf;fh

A) 5 2 1 3 4

B) 5 2 1 4 3

C) 2 5 1 3 4

D) 2 5 3 1 4

67. Shara of ground water in fresh water is

ed;dPh; mstpy; epyj;jo ePhpd; gA;F

A)69% B)97% C)0.3% D)30.1%

68. The desalination plant at Minjur is located in the district of

A) Chennai B)Kancheepuram C)Thiruvallur D) Cuddalore

kPq;R{h; fly; ePiu FoePuhf;Fk; jpl;lk; mikag; bgw;Ws;s khtl;lk;

A) brd;id B) fhq;rpg[uk; C) jpUts;Sh; D)flY]h;

69. The following equation is the example of which type of combustion?

Carbo Hydrate+ Oxygen-Carbon dioxide + Water+ Energy.

A) Very quick combustion B)Slow combustion

C) Rapid combustion D) Incomplete combustion

fPBH cs;s rkd;ghL vj;jid vhpjYf;F cjhuzk; MFk;?

fhh;Bgh i#l;Bul;+Mf;!p$d;- fhh;gd; ilMf;irL+ePh;+Mw;wy;



www.Padasalai.Net



A) kpf Btfkhf vhpjy; B) bkJthf vhpjy;

C) Btfkhf vhjy; D) Kw;Wg;bgwhj vhpjy;

70. Which of the statements are not correct about gaseous fuels?

1) Hight Ignition Temperature

2)Complete combustion

3)High calorific Value

4)High Cost

tha[ vhpbghUs; gw;wpa Tw;Wfspy; jtwhdJ?

1)vhpbtg;g epiy mjpfk;

2)KGtJk; vhpfpwJ

3)fByhhp kjpg;g[ mjpfk;

4)tpiy mjpfk;

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


Parts of flame Nature

a) Zone on non combustion 1) Dark

b) Zone of partial combustion 2)Yellow

c)Zone of complete combustion 3)Blue

bghUj;Jf:

Rlupd; gFjpfs; jd;ikfs;

a) Rlupd; vupahj gFjp 1) fUg;g[

b) Fiwthfvupa[k; gFjp 2) kq;rs;

c) KGtJkhf vupa[k; gFjp 3) ePyk;

a b c

A) 2 1 3

B) 3 1 2

C) 3 2 1

D) 1 2 3

72. Arrange the following in ascending order based on the calorific value.

1) Water gas 2) Coke 3) Petrol 4)Natural Gas



www.Padasalai.Net



fByhup kjpg;g[fs; mog;gilapy; VWtupirapy; vGJf.

1) ePuhtp tha[ 2) fy;fup 3) bgl;Buhy; 4) naw;if tha[

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

73. Choose the correct statement

1) Liquids expand on heating and contract on cooling

2)Rubbing two thing together produces heat due to friction.

rupahd Tw;wpidj; Bju;f.

1) jputA;fs; r{lhf;Fk; BghJ tpuptila[k; Fspu;tpf;fg;gLk; BghJ

RUA;Fk;.

2) nU bghUl;fs; xd;Wld; xd;W Bja;f;fg;gLk; BghJ, cuha;tpd;

fhuzkhf btg;gk; Bjhd;WfpwJ.

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

74. To convert Celsius into Fahrenheit, formula is

bry;rpa!; mstpy; nUe;J ghud;#Pl; mstPl;ow;F khw;wg; gad;gLk;

bjhu;g[

A) 100

80 =

𝐹−32

𝐶 B)

𝐶

𝐹−32 =

100

180 C)

𝐶

180 = F D)

𝐶

100 =

𝐹−32

180

75. When the object is placed very close to the concave mirror, the image formed is

A)Small, inverted virtual image B) Enlarged, inverted virtual image

C) Enlarged, erected virtual image D) Small, erected virtual image

bghUs; FHp Mof;F kpf mUfhikapy; nUf;Fk; BghJ cUthFk;

gpk;gk;.

A) rpwpa jiyfPH; khagpk;gk; B) bgupa jiyfPH; khagpk;gk;

C) bgupa Beuhd khagpk;gk; D) rpwpa Beuhd khagpk;gk;

76. In India, Targa forests are found in

A) Himachal, Punjab, Kashmir B)Bihar, Odhisha, Madhya pradesh

C)Nilgiri, Kazihills, Naga hills D) Assam, West Bengal,Andaman.

ne;jpahtpy; Crpapiyf; fhLfs; fhzg;gLk; gFjpafs;.

A) nkhr;ryk;, gq;rhg;, fh&;kPu;.B) gPfhu;,xorh, kj;jpag;gpuBjrk;.

C) ePyfpup, fhrpkiy, ehfhkiy.D) mrhk;, Bkw;F tA;fhsk;, me;jkhd;

77. Living components are categorized into?



www.Padasalai.Net



capu; fhuzpfis vj;jid tifahf tifg;gLj;jyhk;?

A) two B)three C)four D)five

78. Choose the correct Food Web

A) Insect, Grass hopper, Rabbit B) Insect, Frog,Snake

C) Insect, Frog,Rat D) Insect, Grass hopper, Rabbit.

fPBH cs;s czt[ tiyia rhpahf Bjh;f

A) g{r;rp,btl;Lf;fpsp,Kay; B)tz;L,jtis,ghk;g[

C)g{r;rp,jtis,vyp D)tz;L,btl;Lf;fpsp,vyp

79. In a vertical deep pit, the layer where all the space between soil particles and rock are

filled with water. The top portion of that layer is called as

A) Water table B) Aquifer C)Stream D) Surface water

MHkhf Bjhz;lgl;l xU mLf;fpy; kz; Jfs;fSf;F nilBa

ghiwfSf;F nilBa cs;s gug;g[fs; ePuhy; epuk;gp nUf;Fk; ne;j

mLf;fpd; Bkw;gug;g[

A) ePh;g;gLif B)epyj;jo ePh;kl;lk; C)xil epyj;jo D)Bkw;gug;g[ ePh;

80. Theethal Beach located in the state of

A)Maharashtra B)Gujarat C) Karnataka D) Kerala

jPj;jy; flw;fiu mike;Js;s khepyk;

A) kfhuh&;ouh B) F$uhj; C) fh;ehlfh D)Bfush

81. The amount of Propane and Butane in LPG is?

LPG–apy; g[Buhg;Bgd;, g;a{}l;Bld; mst[?

A) 85,15 B) 10,90 C)15,85 D)90,10

82. Absolute zero is

jdpr;RHp btg;gepiy vd;gJ

A) 273oc B) 273k C)-273k D)-273oC

83. Which of the following regulates water level in the human body is

A) Blood B) Lymph C)Heart D)Lungs

kdpj clypd; ePh; mstpid fl;Lg;gLj;JtJ

A) uj;jk; B) epzePh; C) njak; D)EiuaPuy;

84. Acids reacts with metals and produce

A) Oxygen B) Hydrogen C)Nitrogen D) Carbon



www.Padasalai.Net



mkpyA;fs; cByhfA;fSld; tpisg[hpe;J btspg;gLtJ

A)Mf;!p$d; B) i#l;u$d; C)iel;u$d; D)fhh;gd;

85. Which of the following statement is not correct about Respittion?

1) Takers placr in living cells

2) It involves breathing organs

3) Food is synthesized

4)Energy is released

Rthrpj;jy; gw;wpa Tw;Wfspy; jtwhdJ vJ?

1) capUs;s bry;fspy; eilbgWfpwJ

2) Rthr cWg;g[fs; gA;Bfw;fpd;wd

3) Czt[ jahhpf;fg;gLfpwJ

4) Mw;wy; btspaplg;gLfpwJ

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

86. Choose the sequence of respiratory passage

A) Trachea, Nasal cavity,Bronchi,Alveoli

B)Nasal cavity,Bronchi, Trachea, Alveoli

C)Bronchi,Trachea, Nasal cvity, Alveoli

D)Nasal cavity, Trachea, Bronchi,Alveoli

Rthr bray;ghl;oid Bjh;f

A)K}r;rpf;FHy;, ehrpg;gs;sk;,

K}r;rpfpisFHy;, fhw;W Ez;ziw

B)ehrpg;gs;sk;, K}r;rpf;fpisFHy;,

K}r;rpf;FHy;, fhw;W Ez;ziw.

C) K}r;rpf;fpisFHy;,K}r;Rf;FHy;

ehrpg;gs;sk;, fhw;W Ez;ziw

D)ehrpg;gs;sk; K}r;Rf;FHy;

K}r;RfpisFHy;, fhw;W Ez;ziw

87. Which of the following is not a physical change?

A) Copper sulphate + Sulphuric acid = Crystalisation.

B) Camphor sublimation



www.Padasalai.Net



C) Burning of a candle.

D) Melting of Ice.

fPBH cs;stw;wpy; vJ naw;gpay; khw;wk; my;y?

A)fhg;gh; ry;Bgl;+ry;g;a{hpf; mkpyk;= gofkhjy;

B) fw;g{uk; gjA;fkhjy;

C) bkGF vhpjy;

D) I!; cUFjy;


A) Tomato - Malic acid

B) Grapes - Tartaric acid

C) Milk - Lactic acid

D) Lemon - Citric acid

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

A) jf;fhsp - khypf;mkpyk;

B) jpuhl;ir - lhlhupf; mkpyk;

C) ghy; - yhf;of; mkpyk;

D) vYkpr;ir - rpl;hpf; mkpyk;

89. Match the following:

Commercial Name Base

a) Quick lime 1) Calcium Hydroxide.

b) Caustic Soda 2) Sodium Hydroxide.

c) Slaked Lime 3) Calcium Oxide

d) Caustic potash 4) Potassium Hydroxide

bghUj;Jf

tzpfg;bgah; fhuk;

A) Rl;l Rz;zhk;g[ 1) fhy;rpak; i#l;uhf;irL

B) fh!;of; Brhlh 2) Brhoak; i#l;uhf;irL

C) ePw;Wr; Rz;zhk;g[ 3) fhy;rpak; Mf;irL

D) fh!;of; bghl;lh&; 4) bghl;lrpak; i#l;uhf;irL



www.Padasalai.Net



a b c d

A) 3 2 4 1

B) 2 3 4 1

C) 2 3 1 4

D) 3 2 1 4

90. Which of the following base is used as antacid.

A) Calcium oxide B) Calcium Hydroxide

C) Magnesium Hydroxide D) Ammonium oxide.

mkpy ePf;fpahfg; gad;gLk; fhug;bghUspd; bgah;

A) fhy;rpak; Mf;irL B)fhy;rpak; i#l;uhf;irL

C)bkf;dP&pak; i#l;uhf;irL D)mBkhdpak; Mf;irL

91. One metre is equal to how many feets?

kPl;lh; vd;gJ vj;jid mofSf;F rkk;

A) 2.38 B) 8.32 C) 3.28 D) 3.82


1) An electric circuit is the closed path along which electric current flows from the

negative terminal to the positive terminal of the battery.

2) When current flows, the circuit said to be open, when current does not flow, the circuit

is said to be closed.

rhpahd Tw;wpidj; Bjh;f

1) kpd; Rw;wp vd;gJ kpd;fyj;jpd; vjphpKidapy; nUe;J Beh;kpd; Kidf;F

kpd;Bdhl;lk; bry;Yk; bjhlh;r;rpahd K}oa ghijahFk;.

2) kpd;Bdhl;lk; bry;Yk;BghJ kpd;Rw;W jpwe;j Rw;W vdt[k; kpd;Bdhl;lk;

bry;yhjBghJ kpd;Rw;W K}oa Rw;W vdt[k; miHf;fg;gLk;


93. The composition of water, Sugar, Minerals in honey respectively is

Bjdpy; cs;s Tl;Lg; bghUs;fspd; mst[fs; ePh;, rf;fiu, jhJ cg;g[fs;

KiwBa

A) 75,17,8 B) 8,75,17 C) 75,8,17 D) 17,75,8



www.Padasalai.Net



94. Which of the following is not associated with silk producing places of Tamil Nadu?

A) Siruvanthadu B) Arani C) Cheyyar D) Thirubuvanam

jkpH;ehl;oy; gl;L cw;gj;jp bra;ag;gLk; nlA;fspy; jtwhdJ?

A) rpWte;jhL B)Muzp C)bra;ahW D)jpUg[tdk;

95. Venus fly trap relates to

A) Symbiosis B) Insectivorous plant C)Algae D)Fungi

tPd!; g;isl;uha; cld; bjhlh;g[ilahJ

A) Tl;Laphp B) g[{r;rpa[z;Dk; jhtuk;

C)My;fh D) g{q;ir

96. Absorbed food is utilized in cells called as

A) Assimilation B) Respiratio C) Oxidation D)Cell respiration

czthdJ bry;tpDs; gad;gLk; tpjpkhf khw;wkiltij vt;thW

miHf;fyhk;?

A) jd;kakhjy; B)Rthrk;

C) Mf;!p$Bdw;wk; D)bry; Rthrk;

97. Which of the following is not correct about the large intestine?

1)Its length is 1.5 mts

2) It is a place for temporary storage of undigested food

3)Absorbing food and water takes place here.

kdpj bgUA;Fly; gw;wpa Tw;wpfspy; jtwhdJ?

1) ePsk; 1.5 kPl;lh; MFk;

2) brhpf;fg;glhj czt[ nA;F Brfhpf;fg;gLk;

3) ePh; kw;Wk; czt[ Mfpait cwpq;rg;gLk;

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

98. The total number of milk teeth in human is

kdpj clypy; cs;s ghy; gw;fspd; vz;zpf;if

A) 10 B) 32 C)16 D)20

99. Choose the correct statements

1) Herbivoreous animals can digest cellulose.

2) Grass is rich in cellulose which is a kind of protein

rhpahd Tw;wpiz Bjh;f



www.Padasalai.Net



1) Jhtu cz;zpfs; bry;YByhi! brhpf;fpd;wd.

2) g[w;fspy; mjpfst[ bry;YByh!; vd;w xU tifahd g[ujk;

cs;sJ.


100. One acre, and one hectare’s respectively are

xU Vf;fu; kw;Wk; 1 b#f;Blu; mst[fs; KiwBaa

A) 4047 m2,2.47 acre B) 4047m, 2.47 acre

C) 4047 cm, 2.47 acre D) 4047 Km,2.47 acre



www.Padasalai.Net



7th SCIENCE

1 B 21 D 41 A 61 D 81 C

2 B 22 A 42 D 62 B 82 D

3 B 23 D 43 D 63 D 83 A

4 A 24 A 44 B 64 C 84 B

5 D 25 A 45 C 65 A 85 B

6 B 26 C 46 D 66 A 86 D

7 C 27 C 47 D 67 D 87 C

8 C 28 B 48 C 68 C 88 A

9 B 29 A 49 C 69 B 89 D

10 C 30 A 50 D 70 C 90 C

11 D 31 B 51 A 71 D 91 C

12 A 32 D 52 D 72 B 92 D

13 C 33 C 53 B 73 C 93 D

14 C 34 B 54 B 74 D 94 C

15 A 35 C 55 C 75 C 95 B

16 A 36 A 56 B 76 A 96 A

17 C 37 B 57 D 77 B 97 C

18 C 38 A 58 A 78 B 98 D

19 B 39 B 59 D 79 A 99 A

20 C 40 C 60 B 80 B 100 A

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.



www.Padasalai.Net



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



www.Padasalai.Net



www.chennaiiasacademy.com

“ ALL THE BEST “



www.Padasalai.Net

http://www.chennaiiasacademy.com/

vellore tnpsc · prelims & mains samacheer kalvi questions 7th science with key answers # 5,...

Documents