TN 10th Question Paper 2024 Science

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 11
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7729
!7729Science!
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Part - III
AÔ¯À / SCIENCE
( uªÌ ©ØÖ® B[Q» ÁÈ / Tamil & English Version)

Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 75
Time Allowed : 3.00 Hours ] [ Maximum Marks : 75

AÔÄøµPÒ : (1) AøÚzx ÂÚõUPЮ \›¯õP Aa_¨ £vÁõQ EÒÍuõ GߣuøÚ
\›£õºzxU öPõÒÍÄ®. Aa_¨£vÂÀ SøÓ°¸¨¤ß AøÓU
PsPõo¨£õÍ›h® EhÚi¯õP öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ GÊxÁuØS® AiU÷PõikÁuØS®
£¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS ö£ß]À £¯ß£kzuÄ®.

Instructions : (1) Check the question paper for fairness of printing. If there is any lack of fairness,
inform the Hall Supervisor immediately.
(2) Use Blue or Black ink to write and underline and pencil to draw diagrams.

SÔ¨¦ : CÆÂÚõzuõÒ |õßS £SvPøÍU öPõshx.
Note : This question paper contains four parts.

£Sv & I / PART - I

SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 12x1=12
(ii) öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯
Âøh°øÚz ÷uº¢öukzx SÔ±mkhß Âøh°øÚ²® ÷\ºzx
GÊuÄ®.
Note : (i) Answer all the questions.
(ii) Choose the most appropriate answer from the given four alternatives and write
the option code and the corresponding answer.
[ v¸¨¦P / Turn over

7729 2

1. EÒ÷|õUQ¯ ø\»® Gߣx Guß ]Ó¨¦¨ £s£õS® ?
(A) ÷Áº (B) usk (C) Cø»PÒ (-D) ©»ºPÒ
The endarch condition is the characteristic feature of :

(a) Root (b) Stem (c) Leaves (d) Flowers

2. TFM Gߣx ÷\õ¨¤ß G¢u £Sv¨ ö£õ¸øÍU SÔUQÓx ?

(A) uõx E¨¦ (B) øÁmhªß
(C) öPõʨ¦ ö£õ¸mPÒ (-D) Põº÷£õøím÷µm
TFM in soaps represents __________ content in soap.

(a) Mineral (b) Vitamin

(c) Fatty matter (d) Carbohydrate

3. ö£õx Áõ² ©õÔ¼°ß ©v¨¦ :
(A) 3.81 J ÷©õÀ−1 K−1 (B) 8.03 J ÷©õÀ−1 K−1
(C) 1.38 J ÷©õÀ−1 K−1 (-D) 8.31 J ÷©õÀ−1 K−1
The value of Universal Gas Constant :

(a) 3.81 J mol−1 K−1 (b) 8.03 J mol−1 K−1

(c) 1.38 J mol−1 K−1 (d) 8.31 J mol−1 K−1

4. Q÷»õ Áõm ©o Gߣx GuÝøh¯ A»S ?
(A) ªßuøh Gs (B) ªßPhzx vÓß
(C) ªß BØÓÀ (-D) ªß vÓß
Kilowatt hour is the unit of :

(a) resistivity (b) conductivity

(c) electrical energy (d) electrical power

3 7729

5. DNA &øÁ öÁmh¨ £¯ß£k® ö|õv __________.

(A) ¦÷µõmi÷¯ì (B) öµìm›Uéß Gs÷hõ{³UÎ÷¯ì
(C) DNA ø»÷Pì (-D) RNA ö|õvPÒ
An enzyme which cuts DNA is :
(a) Protease (b) Restriction endonuclease
(c) DNA Ligase (d) RNAase

6. J¸ ÷©õÀ Gߣx __________ ‰»UTÖPøÍU öPõsi¸US®.
(A) 6.023×10 23 (B) 6.023×10−23 (C) 3.0115×10 23 (-D) 12.046×10 23
One mole of any substance contains __________ molecules.

(a) 6.023×10 23 (b) 6.023×10 −23 (c) 3.0115×10 23 (d) 12.046×10 23

7. uø»ø©a _µ¨¤ GÚ SÔ¨¤h¨£kÁx Gx ?
(A) ¤Û¯À _µ¨¤ (B) ¤m³mh› _µ¨¤
(C) øuµõ´k _µ¨¤ (-D) Am›ÚÀ _µ¨¤
Which one is referred as “Master gland” ?
(a) Pineal gland (b) Pituitary gland
(c) Thyroid gland (d) Adrenal gland

8. PõØÖ ÁÈ ©Pµ¢ua ÷\ºUøP |øhö£Ö® uõÁµ[PÎß £s¦P÷Íõk
öuõhº¤À»õux Gx ?
(A) ©»ºPÒ HµõÍ©õÚ ©Pµ¢uzxPÒPøÍ EØ£zv ö\´QßÓÚ.
(B) `À•i¯õÚx ö£›¯uõPÄ®, öÁÎ÷¯ }miUöPõsk® C¸US®.
(C) ©»ºPÒ {Ó®, ©n® ©ØÖ® ÷uß _µUS® ußø©°øÚ²® öPõsi¸US®.
(-D) ©Pµ¢uzxPÒPÒ ]Ô¯uõPÄ® E»º¢uuõPÄ® C¸US®.
Which among the following is not the characteristic of anemophilous plants ?
(a) the flowers produce enormous amount of pollen grains.
(b) the stigmas are large and protruding.
(c) the flowers are brightly coloured, have smell and nectar.
(d) pollen grains are small and dry.

[ v¸¨¦P / Turn over

7729 4

9. RÌUPshÁØÖÒ {ø»©® GuøÚa \õº¢ux ?
(A) ö£õ¸Îß Gøh (B) ÷PõÎß Dº¨¦ •kUP®
(C) ö£õ¸Îß {øÓ (-D) (A) ©ØÖ® (B)
Inertia of a body depends on :

(a) Weight of the object (b) Acceleration due to gravity of planet

(c) Mass of the object (d) Both (a) and (b)

10. Cµzu Kmhzvß \›¯õÚ Á›ø\ Gx ?
(A) öÁsm›UQÒ → Hm›¯® → ]øµ → u©Û
(B) Hm›¯® → öÁsm›UQÒ → ]øµ → u©Û
(C) Hm›¯® → öÁsm›UQÒ → u©Û → ]øµ
(-D) öÁsm›UQÒ → ]øµ → Hm›¯® → u©Û
Which is the correct sequence of blood flow ?

(a) Ventricle → Atrium → Vein → Arteries

(b) Atrium → Ventricle → Vein → Arteries

(c) Atrium → Ventricle → Arteries → Vein

(d) Ventricle → Vein → Atrium → Arteries

11. ¤ßÁ¸ÁÚÁØÖÒ Gx ""uÛ©® + uÛ©® → ÷\º©®'' ÁøP AÀ» ?
(A) C(s)+O2(g)→ CO2(g) (B) 2K(s)+Br2(l)→ 2KBr(s)
(C) 2CO(g)+O2(g)→ 2CO2(g) (-D) 4Fe(s)+3O2(g)→ 2Fe2O3(s)
Which of the following is not an “element+element → compound” type reaction ?

(a) C(s)+O2(g)→ CO2(g) (b) 2K(s)+Br2(l)→ 2KBr(s)

(c) 2CO(g)+O2(g)→ 2CO2(g) (d) 4Fe(s)+3O2(g)→ 2Fe2O3(s)

5 7729

12. G¤w¼¯À ö\À¼À ¦ØÖ÷|õ´ E¸ÁõÁuØS __________ GßÖ ö£¯º.
(A) ¾³U÷Pª¯õ (B) \õºU÷Põ©õ
(C) Põº]÷Úõ©õ (-D) ¼¨÷£õ©õ
Cancer of the epithelial cell is called as __________.

(a) Leukaemia (b) Sarcoma

(c) Carcinoma (d) Lipoma

£S-v & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® HÊ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 22 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 7x2=14

Note : Answer any seven questions. Question No. 22 is compulsory.

13. ÷uõØÓ öÁ¨£ Â›Ä SnP® GßÓõÀ GßÚ ?
What is coefficient of apparent expansion ?

14. ªßÛøÇ ÂÍUSPÎÀ h[ìhß E÷»õP® £¯ß£kzu¨£kQÓx. BÚõÀ ªß
E¸Q CøǯõP AuøÚ¨ £¯ß£kzxÁvÀø». Hß ?
Why is tungsten metal used in bulbs but not used as fuse wires ?

15. x¸ Gߣx GßÚ ? x¸ E¸ÁõSÁuß \©ß£õmøhz u¸P.
What is rust ? Give the equation for the formation of rust.

16. ÷©øh GßÓõÀ GßÚ ?
What is stage ?

[ v¸¨¦P / Turn over

7729 6

17. ø\÷Úõ Hm›¯À Pq ""Cu¯zvß ÷£ì÷©UPº'' GßÖ Hß AøÇUP¨£kQÓx ?
Why is sinoatrial node called as pacemaker of heart ?

18. ¤ß ‰øÍ°ß £õP[PÒ ¯õøÁ ?
What are the parts of the hind brain ?

19. öPõkUP¨£mkÒÍ £hzvÀ A, B, C ©ØÖ® D BQ¯ £õP[PøÍ Aøh¯õÍ®
PõnÄ®.
Identify the parts A, B, C and D in the given figure.

20. öPõ»ìmµ® (^®£õÀ) GßÓõÀ GßÚ ? £õÀ EØ£zv¯õÚx íõº÷©õßPÍõÀ
GÆÁõÖ JÊ[S£kzu¨£kQÓx ?
What is colostrum ? How is milk production hormonally regulated ?

21. ö©mhõìhõ]ì GßÓõÀ GßÚ ?
What is metastasis ?

22. J¸ Pøµ\¼ß pH ©v¨¦ 4.5 GÛÀ, Auß pOH ©v¨ø£U PõsP.
If the pH of a solution is 4.5, find the value of its pOH.

7 7729

£S-v & III / PART - III
SÔ¨¦ : GøÁ÷¯Ý® HÊ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 32 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 7x4=28

Note : Answer any seven questions. Question No. 32 is compulsory.

23. {ø»©zvß £À÷ÁÖ ÁøPPøÍ GkzxUPõmkPÐhß ÂÍUSP.
Explain the various types of inertia with examples.

24. (A) C¯ØøP ©ØÖ® ö\¯ØøP Pv›¯UPzvß H÷uÝ® ‰ßÖ £s¦PøÍ GÊxP.
(B) ªß÷Úõmhzvß öÁ¨£ ÂøÍøÁ¨ £¯ß£kzv ö\¯À£k® Cµsk ªß
\õuÚ[PÎß ö£¯›øÚU TÖP.
(a) Write any three features of natural and artificial radioactivity.

(b) Name any two devices, which are working on the heating effect of current.

25. (A) MgSO4.7H2O E¨¤øÚ öÁ¨£¨£kzx®÷£õx GßÚ {PÌQÓx ? CÆÂøÚU&
PõÚ \©ß£õmiøÚ GÊxP.
(B) PøµvÓß – Áøµ¯ÖUPÄ®.
(a) What happens when MgSO4.7H2O is heated ? Write the appropriate equation.

(b) Define : Solubility.

26. (A) _Áõ\ DÄ GßÓõÀ GßÚ ?
(B) JÎa ÷\ºUøP°ß÷£õx C¸Ò ÂøÚUS •ß¦ Hß JÎ ÂøÚ |øhö£Ó
÷Ásk® ?
(a) What is Respiratory Quotient ?

(b) Why should the light dependent reaction occur before light independent reaction during
photosynthesis ?

[ v¸¨¦P / Turn over

7729 8

27. •¯¼ß £À Áõ´¨£õmiøÚ GÊxP.
Write the dental formula of rabbit.

28. (A) uõÁµ[PÒ ©ØÖ® »[SPÎÀ ³¤Íõ´i {ø» \õuP©õÚuõP Hß
P¸u¨£kQÓx ?
(B) {³µõßPÒ AÁØÔß Aø©¨¤ß Ai¨£øh°À GÆÁõÖ ÁøP¨£kzu¨&
£mkÒÍÚ ?
(a) Why is Euploidy considered to be advantageous to both plants and animals ?

(b) Classify Neurons based on its structure.

29. u©ÛPЮ, ]øµPЮ Aø©¨¤ß Ai¨£øh°À GÆÁõÖ ÷ÁÖ£kQßÓÚ ?
How are Arteries and Veins structurally different from one another ?

30. Ámhõµ CÚ uõÁµÂ¯À GߣuøÚ Áøµ¯Özx, Auß •UQ¯zxÁzøu GÊxP.
Define Ethnobotany and write its importance.

31. (A) PõhȨ¤ÚõÀ HØ£hUTi¯ ÂøÍÄPÒ ¯õøÁ ?
(B) DNA µÀ ÷µøPz öuõÈÀ ~m£zvß |øh•øÓ £¯ß£õkPøÍU TÖP.
(a) What are the consequences of deforestation ?

(b) State the applications of DNA finger printing technique.

32. (A) G¢u Aª»® A¾ªÛ¯ E÷»õPzøu ö\¯À£hõ {ø»US Em£kzx® ? Hß ?
(B) 1.51×1023 ‰»UTÖ Eøh¯ NH 4 Cl &ß ÷©õÀPÎß GsoUøPø¯U
PnUQkP.
(a) Name the acid that renders Aluminium passive. Why ?

(b) Calculate the number of moles in 1.51×1023 molecules of NH4Cl.

9 7729

£S-v & IV / PART - IV

SÔ¨¦ : AøÚz-x ÂÚõU-P-ÐU-S® Âøh-¯-ÎU-P-Ä®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
Áøµ¯Ä®. 3x7=21

Note : Answer all the questions. Draw diagrams wherever necessary.

33. (A) (i) SÂö»ß]ß £¯ßPÒ ¯õøÁ ?

(ii) {Ó¨¤›øP – Áøµ¯ÖUPÄ®.

(iii) ÷£õUSÁµzxa ø\øP ÂÍUSPÒ ]Á¨¦ {ÓzvÀ Aø©UP¨£kÁuß Põµn®
GßÚ ?

(iv) |P¸® ~s÷nõUQ°ß «a]ØÓÍÄ GßÚ ?

AÀ-»-x

(B) (i) Gvöµõ¼ GßÓõÀ GßÚ ?

(ii) Gvöµõ¼ ÷Pm£uØPõÚ Cµsk {£¢uøÚPøÍU TÖP.

(iii) Gvöµõ¼°ß ©¸zxÁ¨ £¯ßPøÍU TÖP.

(iv) Gvöµõ¼ø¯¨ £¯ß£kzv J¼°ß vø\÷ÁPzøuU PõsP.

(a) (i) What are the uses of convex lens ?

(ii) Define dispersion of light.

(iii) Why are traffic signals red in colour ?

(iv) What is the least count of travelling microscope ?

OR

(b) (i) What is an echo ?

(ii) State two conditions necessary for hearing an echo.

(iii) What are the medical applications of echo ?

(iv) How can you calculate the speed of sound using echo ?

[ v¸¨¦P / Turn over

7729 10

34. (A) (i) J÷µ öÁ¨£ AÊzu {ø»°À 3 ¼. O2, 5 ¼. Cl2 ©ØÖ® 6 ¼. H2 Áõ²UPøÍ
GkzxU öPõshõÀ
(A) Gx AvP GsoUøP°»õÚ ‰»UTÖPøÍU öPõsi¸US® ?
(B) Gx SøÓ¢u GsoUøP°»õÚ ‰»UTÖPøÍU öPõsi¸US® ?
(ii) |ÃÚ AqU öPõÒøP°ß ÷Põm£õkPøÍ GÊxP.
AÀ-»-x
(B) (i) ihºöásmPÒ GÆÁõÖ }øµ ©õ_¨£kzxQßÓÚ ?
(ii) J¸ P›©a ÷\º©® ‘A’ Gߣuß ‰»UTÖ Áõ´¨£õk C 2H4O 2. Cx
£u¨£kzxu¼À £¯ß£kQÓx. ÷©¾® GzuÚõ¾hß ÂøÚ¦›¢x
CÛ¯ ©n•øh¯ ÷\º©® ‘B’ &ø¯z u¸QÓx GÛÀ,
(A) ÷\º©® ‘A’ &ø¯U PshÔP.
(B) ÷\º©® ‘B’ E¸ÁõuÀ ÂøÚ°øÚ GÊxP.
(C) C¢{PÌÂØS¨ ö£¯›kP.
(a) (i) Under same conditions of temperature and pressure, if you collect 3 litre of O2,
5 litre of Cl2 and 6 litre of H2,

(A) Which has the highest number of molecules ?

(B) Which has the lowest number of molecules ?

(ii) Give the salient features of ‘Modern Atomic theory’.

OR

(b) (i) How do detergents cause water pollution ?

(ii) An organic compound ‘A’ is widely used as a preservative and has the molecular
formula C2H4O2. This compound reacts with ethanol to form a sweet smelling
compound ‘B’, then

(A) Identify the compound ‘A’.

(B) Write the chemical equation for its reaction with ethanol to form compound
‘B’.

(C) Name this process.

11 7729

35. (A) (i) ö\¯ØøP BUêßPÒ GߣøÁ ¯õøÁ ? GkzxUPõmk u¸P.

(ii) §US® uõÁµzvÀ EÒÍ `»Pzvß Aø©¨ø£ £õP® ©ØÖ® £hzxhß
ÂÍUSP.

AÀ-»-x

(B) (i) ""C¢v¯ £_ø©¨ ¦µm]°ß u¢øu'' GÚ AøÇUP¨£k£Áº ¯õº ?

(ii) EmP»¨¦ ©ØÖ® öÁÎUP»¨¦ – ÷ÁÖ£kzxP.

(iii) ÁøP I ©ØÖ® ÁøP II }›ÈÄ ÷|õ´PøÍ ÷ÁÖ£kzxP.

(a) (i) What are synthetic auxins ? Give an example.

(ii) With a neat labelled diagram, describe the parts of the typical angiospermic ovule.

OR

(b) (i) Who is called the “Father of Indian Green Revolution” ?

(ii) Differentiate between out-breeding and in-breeding.

(iii) Differentiate between Type-I and Type-II Diabetes mellitus.

-o0o-

[ v¸¨¦P / Turn over

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