vellore tnpsc · prelims & mains samacheer kalvi questions 7th science with key answers # 5,...
TRANSCRIPT
CHENNAI IAS ACADEMY – Vellore / 9043 211 311 / 411
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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
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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;
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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
6. Match the following
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;
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A) 1 2 4 3
B) 2 1 3 4
C) 1 2 3 4
D) 2 1 4 3
7. Choose the correct statement.
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.
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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
11. Choose the correct statements.
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;
13. Choose the wrongly matched pair.
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
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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?
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A) ghf;Ohpah B) itu!; C) g{q;ir D) g[Buhl;BlhBrhth
17. Match the following
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
18. Choose the wrongly matched pair.
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;
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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
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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
rhpahd Tw;wpid Bjh;f
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;.
26. Choose the correct statements.
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
rhpahd Tw;wpid Bjh;f
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
28. Choose the correct statement.
1) Banking soda tastes is sour.
2)Banking soda tastes is bitter.
A) 1 only B)2 only C)both D)none of these
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rhpahd Tw;wpid Bjh;f
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
34. Choose the correct statements.
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
rhpahd Tw;wpid Bjh;f
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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
35. Match the following
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
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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
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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
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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;
51. Match the following
a) Burning of stick 1) Desirable change
b) Earth quake 2) Reversible change
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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;
55. Match the following
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
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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;
57. Match the following
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
58. Match the following
Biome Flora
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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
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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; - $Pd; 05
D) cyf fhLfs;jpdk; - khh;r;21
66. Match the following
Forest Location
a) Temperate grassland 1) Canada,Russia
b) Deciduous 2) Eastern Asia
c)Taiga 3)Western Australia,Eastern Pakistan
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d) Savanna 4) Afica
e)Tropical Rain forest 5) North and south
America
bghUj;Jf.
fhLfs; miktplA;fs;
a) kpjbtg;g kz;lyg; 1) fdlh,u&;ah
gFjp
b) niya[jph; fhLfs; 2) fpHf;F Mrpah
c) Crpapiy fhLfs; 3) Bkw;F M!;jpBuypah
fpHf;F gfp!;jhd; gFjp
d) g[y;btsp gpuBjrk; 4) Mg;gphpf;fh
e) btg;g kz;ly 5) tlf;F kw;Wk;
kiHf;fhLfs; bjw;F mbkhpf;fh
A) 5 2 1 3 4
B) 5 2 1 4 3
C) 2 5 1 3 4
D) 2 5 3 1 4
67. Shara of ground water in fresh water is
ed;dPh; mstpy; epyj;jo ePhpd; gA;F
A)69% B)97% C)0.3% D)30.1%
68. The desalination plant at Minjur is located in the district of
A) Chennai B)Kancheepuram C)Thiruvallur D) Cuddalore
kPq;R{h; fly; ePiu FoePuhf;Fk; jpl;lk; mikag; bgw;Ws;s khtl;lk;
A) brd;id B) fhq;rpg[uk; C) jpUts;Sh; D)flY]h;
69. The following equation is the example of which type of combustion?
Carbo Hydrate+ Oxygen-Carbon dioxide + Water+ Energy.
A) Very quick combustion B)Slow combustion
C) Rapid combustion D) Incomplete combustion
fPBH cs;s rkd;ghL vj;jid vhpjYf;F cjhuzk; MFk;?
fhh;Bgh i#l;Bul;+Mf;!p$d;- fhh;gd; ilMf;irL+ePh;+Mw;wy;
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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
71. Match the following
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
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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?
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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$uhj; C) fh;ehlfh D)Bfush
81. The amount of Propane and Butane in LPG is?
LPG–apy; g[Buhg;Bgd;, g;a{}l;Bld; mst[?
A) 85,15 B) 10,90 C)15,85 D)90,10
82. Absolute zero is
jdpr;RHp btg;gepiy vd;gJ
A) 273oc B) 273k C)-273k D)-273oC
83. Which of the following regulates water level in the human body is
A) Blood B) Lymph C)Heart D)Lungs
kdpj clypd; ePh; mstpid fl;Lg;gLj;JtJ
A) uj;jk; B) epzePh; C) njak; D)EiuaPuy;
84. Acids reacts with metals and produce
A) Oxygen B) Hydrogen C)Nitrogen D) Carbon
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mkpyA;fs; cByhfA;fSld; tpisg[hpe;J btspg;gLtJ
A)Mf;!p$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
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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;
88. Choose the wrongly matched pair.
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
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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
92. Choose the correct statement.
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;
A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJkpy;iy
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
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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
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1) Jhtu cz;zpfs; bry;YByhi! brhpf;fpd;wd.
2) g[w;fspy; mjpfst[ bry;YByh!; vd;w xU tifahd g[ujk;
cs;sJ.
A) 1 kl;Lk; B) 2 kl;Lk; C) nuz;Lk; D) njpy; VJkpy;iy
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
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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
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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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