TN 12th Question Paper 2025 Basic Civil Engineering

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8379
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Part III — Vocational Subjects
Ai¨£øhU Pmhh¨ ö£õÔ°¯À
BASIC CIVIL ENGINEERING
( uªÌ ©ØÖ® B[Q» ÁÈ / Tamil & English Version )

Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 90
Time Allowed : 3.00 Hours ] [ Maximum Marks : 90

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

£Sv & I / PART - I

SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 15x1=15

(ii) öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯
Âøhø¯ ÷uº¢öukzxU 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

8379 2

1. £Ç[-Põ-»z-vÀ ©Û-uß uß Si-°-¸¨ø£ __________ Aø©z-xU öPõs-hõß.
(A) Á›-ø\ Ãk-P-ÎÀ (B) ©µ[-P-ÎÀ
(C) A-kU-S-©õi Si-°-¸¨-¦-P-ÎÀ (D) SøP-P-ÎÀ
During ancient times man used to live in ___________.
(a) Row houses (b) Trees
(c) Apartments (d) Dens

2. ©Û-uº-PÒ ÁõÌ-|õ-ÎÀ __________ £[øP EÓU-Pz-vÀ PÈU-Qß-Ó-Úº.
(A) ‰ß-ÔÀ J¸ (B) Aøµ (C) BÔÀ J¸ (D) |õß-QÀ J¸
People spend ___________ of their life time in sleeping.
(a) One-third (b) Half (c) One-sixth (d) One-fourth

3. __________ ö\[-PØ-P-ÐUS ÷£õm-i-¯õP {»U-P› \õ®-£À ö\[-PØ-PÒ ©õØ-ÓõP EÒÍx.

(A) GL-S (B) PÎ-©s (C) Gøh SøÓ¢u (D) Ps-nõ-i
Fly ash bricks are competitive in comparison to the conventional __________ bricks.
(a) Steel (b) Clay (c) light weight (d) Glass

4. A¾-ª-Û-¯®, __________ ©Ø-Ö® ªß-\õ-µzøu |ßS Phz-x®.
(A) JÎ (B) Sκ (C) ªPUSκ (D) öÁ¨-£®
Aluminium is a good conductor of __________ and electricity.
(a) light (b) cool (c) very cool (d) heat

5. â÷¯õ-öh-iU {» AÍUøP Gß-£-x __________.
(A) _µ[P {» AÍU-øP (B) ©mh {» AÍU-øP
(C) £øhz-xøÓ {» AÍUøP (D) m›U-Úõ-ö©m-›U-PÀ {» AÍUøP
The geodetic surveying is called ___________.
(a) Mine surveying (b) Plane surveying
(c) Military surveying (d) Trigonometrical surveying

3 8379

6. ö©m- › U \[- Q - ¼ - ° ß Akz- u - k z- x ÒÍ Cµsk ø©¯ ÁøÍ- ¯ z- v ß ø©¯¨
¦Ò-Î-P-ÐUS Cøh¨-£mh yµ® __________ GÚ¨-£-k-Q-Óx.
(A) ¼[-Qß yµ® (B) ¼[-Qß }Í®
(C) \[-Q-¼-°ß yµ® (D) \[-Q-¼-°ß }Í®
The distance between the centres of the two consecutive middle links of a metric chain is
called __________.
(a) distance of link (b) length of link
(c) distance of chain (d) length of chain

7. Si us-p-›À AÝ-©-vU-P¨-£mh S÷Íõ-øµ-iß AÍÄ __________.
(A) 400 mg/l (B) 500 mg/l (C) 250 mg/l (D) 300 mg/l
The permissible limit of chloride for drinking water is ____________.
(a) 400 mg/l (b) 500 mg/l (c) 250 mg/l (d) 300 mg/l

8. ö©x ©nÀ Ái-Pm-i-P-Îß Ái-Pm-k® vÓß __________.
(A) 2000 - 3000 ¼/\.«/1 ©o (B) 100 - 200 ¼/\.«/1 ©o
(C) 3000 - 6000 ¼/\.«/1 ©o (D) 500 - 1000 ¼/\.«/1 ©o
The rate of filtration of a slow sand filter is ___________.
(a) 2000 to 3000 litres/m2/hour (b) 100 to 200 litres/m2/hour
(c) 3000 to 6000 litres/m2/hour (d) 500 to 1000 litres/m2/hour

9. ©Û-u-ÝUS _Áõ\ ÷|õ´-PÒ Es-hõU-S® ©õ-_-£-kz-x® Põ-µo :
(A) ø|m-µ-áß ÷\º-©[-PÒ (B) K÷\õß
(C) Põº-£ß ÷©õ-ÚõU-øék (D) P¢-u-P øhBU-øé-k
The pollutant which causes respiratory diseases in human beings is :
(a) Nitrogen compounds (b) Ozone
(c) Carbon monoxide (d) Sulphur dioxide

10. £»©õ- i U Pm- i - h [- P - Î - ¼ - ¸ ¢x PÈ- Ä - P - ø Í ÷\P- › zx öÁÎ- ÷ ¯Ø- Ó __________
£¯ß-£-k-Q-Óx.
(A) JØ-øÓU-S-Çõ´ •øÓ (B) }ºa-_ø© •øÓ
(C) Cµm-øhU-S-Çõ´ •øÓ (D) £õ-x-Põ¨-£õÚ •øÓ
The collection and conveyance of sewage from multistoreyed building is in _________ of
sanitation.
(a) One pipe system (b) Water carriage system
(c) Two pipe system (d) Conservancy system

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8379 4

11. AøÚzx ©õ-{-»[-PÒ ©Ø-Ö® ©õ-Põ-n[-P-ÎÀ EÒÍ •ußø© ö£õ-Ô-°-¯-»õͺ-- -
P-Îß ©õ-|õm-iÀ •uÀ 20 Á¸h \õø» ÷©®- £ õm- k z vm- h ® u¯õ- › U- P ¨- £ mk
¤ß¦ __________ GÚ ¤µ-£-»-©õP AÔ-¯¨-£mhx.
(A) »õºm hÀ-öíÍ] Pªm-i (B) öá¯-Pº SÊ
(C) ö£õ-x¨ £oz -xøÓ (D) |õU-§º vm-h®
A conference of all the Chief engineers of all the States and Provinces prepared the First
20-year Road Development Plan and was popularly known as ____________.
(a) Lord Dalhousie Committee (b) Jayakar Committee
(c) Public Works Department (d) Nagpur Plan

12. ö£õ-x¨ £oz -xøÓ ¯õ-µõÀ E¸-ÁõU-P¨-£m-hx ?
(A) A÷\õ-Põ µõ-áõ (B) »õºm hÀ-öíÍ-]
(C) \¢-vµ S¨u ö©Í-›-¯õ (D) öåº- åõ `›
Who formed the Public Works Department ?
(a) King Ashoka (b) Lord Dalhousie
(c) Chandra Gupta Maurya (d) Sher Shah Suri

13. £µ¨¦ CÊ-Â-ø\-°ß A»-S __________.
(A) {³m-hß / « (B) {³m-hß / ª.«
(C) {³m-hß / ö\.« (D) {³m-hß / \.ª.-«
The unit for surface tension is ____________.
(a) N/m (b) N/mm
(c) N/cm (d) N/mm2

14. RÌU-Ps-h-ÁØ-ÔÀ ©Û-u-ÚõÀ HØ-£-kz-u¨-£-k® ÷£µ-È-Â-øÚU Ps-h-Ô-¯-Ä®.
(A) G›-©-ø» öÁi¨-¦ (B) _Úõ-ª
(C) ÷£õº (D) {»-|-kU-P®
Identify the man-made disaster from the following :
(a) Volcanic eruption (b) Tsunami
(c) War (d) Earthquake

15. öÁÒͨ ö£¸U-Q-ÚõÀ öuõØÖ ÷|õ-´-PÒ HØ-£-k-Qß-ÓÚ, CuØS Põ-µ-n® __________.
(A) }º ÷u[-S-uÀ (B) Av-P ©øÇ
(C) ¦¯À (D) £»zu PõØ-Ö
Floods cause risk of epidemics because of __________.
(a) Water logging (b) Heavy rain
(c) Cyclone (d) Strong wind

5 8379

£Sv & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® £z- x Â-ÚõU-P-ÐUS Âøh¯-ÎU-P-Ä®. ÂÚõ Gs 28 &US
Pmhõ¯©õP Âøh-¯-Îz-uÀ ÷Ás-k®. 10x3=30
Note : Answer any ten questions. Question No. 28 is Compulsory.

16. \ø©-¯-»-øÓ-°ß SøÓ¢-u-£m\ AÍÄ ¯õx ?
What is the minimum size of a kitchen ?

17. AkU-S-©õi Si-°-¸¨-¦-P-ÎÀ EÒÍ SøÓ-£õ-k-PÒ ¯õøÁ ?
What are the disadvantages in Apartments ?

18. Ps-nõi £ØÔ ]Ö SÔ¨¦ ÁøµP.
Write short notes on Glass.

19. \µõ-\› PhÀ ©m-h® Gß-ÓõÀ GßÚ ?
What is meant by Mean Sea Level ?

20. }º _z-v-P-›¨-£-uØ-PõÚ ÷|õU-P[-P-ÎÀ H÷u-Ý® ‰ß-ÔøÚ GÊ-xP.
Write any three objectives of Water Treatment.

21. }º GÆ-ÁõÖ ©õ-_-£-k-Q-Óx ?
How does water get polluted ?

22. \õø» ø\øP SÔ-±-k-PÒ H÷u-Ý® 3 Áøµ-P.
Draw any three road signs.

23. BØ-ÓÀ CǨø£ PnU-Q-k® hõº-]-°ß `z-v-µzøu GÊ-x-P.
Write the Darcy’s formula to find out loss of head.

24. Ahºzv £ØÔ ]Ö SÔ¨¦ u¸P.
Write a short note on Density.

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8379 6

25. £i-¯-øÁz-uÀ – Áøµ-¯-ÖU-P-Ä®.
Define Sedimentation.

26. ¦¯-¼ß ÂøÍ-Ä-PÒ ¯õøÁ ?
What are the effects of cyclone ?

27. Gs-ön´ P]-Ä £ØÔ ]Ö SÔ¨¦ GÊ-xP.
Write short notes on - Oil spill.

28. EÔg-_® SÈ Gß-ÓõÀ GßÚ ?
What is meant by Soak Pit ?

£Sv & III / PART - III
SÔ¨¦ : GøÁ÷¯Ý® I¢-x Â-ÚõU-P-ÐUS Âøh¯-ÎU-P-Ä®. ÂÚõ Gs 35 &US
Pmhõ¯©õP Âøh-¯-ÎUP ÷Ás-k®. 5x5=25
Note : Answer any five questions. Question No. 35 is compulsory.

29. ©m-hU-SÔ Gß-£x ¯õx ? £À-÷ÁÖ ÁøP-¯õÚ ©m-hU-S-Ô-PøÍ Á›-ø\¨-£-kz-xP.
What is a benchmark ? List out the different types of benchmark.

30. Lö£-÷µõ]ö©sm Gß-ÓõÀ GßÚ ? Auß uß-ø©-PÒ ¯õøÁ ?
What is Ferrocement ? What are its properties ?

31. -|À» Si-}º £QºÄ •øÓU-PõÚ ÷uøÁ-PÒ ¯õøÁ ?
What are the requirements of a good water distribution system ?

32. ]ö©sm Põß-Q-Ÿm \õ-ø»-°ß |ß-ø©-PÒ ©Ø-Ö® wø©-PøÍ £m-i-¯-¼-kP.
List the merits and demerits of Cement Concrete road.

33. §P®-£® Gß-ÓõÀ GßÚ ? Ax HØ-£h Põ-µ-n[-PøÍ GÊ-x-P.
What is an earthquake ? Write its causes.

34. ö£º-÷Úõ-¼-°ß ÷uØ-Ó® AÀ-»x BØ-ÓÀ \©ß-£õmøh _¸U-P-©õP ÂÍU-SP.
Explain briefly about the Bernoulli’s Theorem or Energy equation.

35. |a-_z-uøh öuõm-i-°ß £h® Áøµ¢x £õ-P[-PøÍ SÔU-P-Ä®.
Draw neat sketch of Septic Tank and label its parts.

7 8379

£Sv & IV / PART - IV
SÔ¨¦ : A- ø Úz- x ÂÚõU- P - Ð U- S ® Âøh¯- Î U- P - Ä ®. ÷uøÁ- ¯ õÚ Ch[- P - Î À
£h® Áøµ-P. 2x10=20
Note : Answer all the questions. Draw neat sketches wherever required.

36. (A) uÛ-|-£ºz ÷uøÁ-ø¯ £õ-vU-S® Põ-µ-o-PøÍ ÂÁ-›U-P-Ä®.
AÀ»x
(B) ©mh AÍUøP P¸- Â - ° ß Eu- Â - ² - h ß öuõ- h ºa- ] - ¯ õP GkU- P ¨- £ mh ©mh
AÍUøP ÷PõÀ AÍ- Ä - P Ò R÷Ç öPõ- k U- P ¨- £ m- k ÒÍÚ. ©m- h U- P - ¸ Â
2, 5 ©Ø-Ö® 8 Áx AÍ-Ä-P-ÐUS ¤ß Ch-©õØ-Ó® ö\´-¯¨-£m-hx. ¦Ò-Î-PøÍ
Am-h-Á-øn¨-£-kzv H÷u-Ý® J¸ •øÓ-°À SøÓU-P¨-£mh ©m-hzøu PõsP.
PnU-R-k-PøÍ \›-£õºU-P-Ä®.
0.675, 1.230, 0.750, 2.565, 2.225, 1.935, 1.835, 3.220, 3.115 ©Ø- Ö ® 2.875
©m-hU-S-Ô-°ß SøÓU-P¨-£mh ©m-h® 100.000 «.
(a) Explain the factors affecting Per Capita Demand.
OR
(b) The following staff readings were observed successively with a level, the instrument
having been moved after the second, fifth and eighth readings.
0.675, 1.230, 0.750, 2.565, 2.225, 1.935, 1.835, 3.220, 3.115 and 2.875. The RL of BM
is 100.000 m.
Obtain the reduced levels of each point by any one method and apply usual check.

37. (A) öÁÒͨ- ö£-¸U-Qß ÷£õ-x® Auß ¤ß-Ú-¸® ö\´-¯-÷Ás-i¯ •ß-öÚa-\-›UøP
|h-Á-iU-øP-PøÍ £ØÔ Â›-ÁõP GÊ-xP.
AÀ»x
(B) 150 ª.« Âm-h-•® 400 «m-hº }Í-•® öPõsh J¸ S-Çõ-°À ÂÚõ-iUS
2.5 «m-hº vø\-÷Á-Pz-vÀ }º KiU-öPõs-i-¸U-Q-Óx. ö\ê ©õ-Ô¼ (c) I 40
GÚU öPõsk SÇõ-°À HØ-£-k® BØ-ÓÀ CǨ-¤-øÚU PõsP.
(a) Write in detail about the precautions to be taken during and after flood.
OR
(b) Water flows through a pipe line 150 mm diameter and 400 m long. The velocity of flow
of water in the pipe is 2.5 m/s. Find out the loss of head in the pipe by taking Chezy’s
Constant (c) as 40.

-oOo-

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Study Materials
Notes

Model Papers Class 6 Notes

Sample Papers Class 7 Notes
Half Yearly Sample Papers Class 8 Notes

Class 9 Notes
Important Resources
Class 10 Notes
Periodic Table
Class 11 Notes
Writing Skills / Formats

Maps of India / World Class 12 Notes

Books and Solutions

NCERT Books
NCERT Book Solutions
HC Verma Chapter Wise Solutions
RD Sharma Solutions
CGBSE Solutions