CBSE Class 12 Construction Technology Question Paper 2019

SET-4
Series BVM H$moS> Z§.
Code No.
321
amob Z§. narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð
Roll No. >na Adí` {bIo§ &
Candidates must write the Code on the
title page of the answer-book.

 H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 8 h¢ &
 àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma -nwpñVH$m Ho$ _wI-n¥ð> na
{bI| &
 H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >35 àíZ h¢ &
 H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| &
 Bg àíZ-nÌ H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ & àíZ-nÌ H$m {dVaU nydm©•
_| 10.15 ~Oo {H$`m OmEJm & 10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo n‹T>|Jo
Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo &
 Please check that this question paper contains 8 printed pages.
 Code number given on the right hand side of the question paper should be
written on the title page of the answer-book by the candidate.
 Please check that this question paper contains 35 questions.
 Please write down the Serial Number of the question before
attempting it.
 15 minute time has been allotted to read this question paper. The question
paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the
students will read the question paper only and will not write any answer on
the answer-book during this period.

{Z_m©U VH$ZrH$s
CONSTRUCTION TECHNOLOGY

{ZYm©[aV g_` : 2 12 KÊQ>o A{YH$V_ A§H$ : 50
1
Time allowed : 2 hours Maximum Marks : 50
2

321 1 P.T.O.

IÊS> A$
SECTION A

~hþ{dH$ënr` àíZ
Multiple Choice Questions

Xg àíZm| _| go {H$Ýht AmR> àíZm| Ho$ CÎma Xr{OE & àË`oH$ àíZ 1 A§H$ H$m h¡ & 18=8
Answer any eight questions out of ten questions. Each question is of 1 mark.

1. EH$ Ztd H$s JhamB© Ed§ Mm¡‹S>mB© H«$_e: 2 _rQ>a Ed§ 3 _rQ>a h¡ & `h hmoJr 1
(H$) {N>N>br (CWbr) Ztd
(I) T>oa O¡gr Ztd
(J) Hw$E± O¡gr Ztd
(K) ~m±Y O¡gr Ztd
The depth and width of a foundation are 2 m and 3 m respectively. This
will be
(a) Shallow foundation
(b) Pile foundation
(c) Well foundation
(d) Pier foundation

2. nËWa H$s {MZmB© dmbr Xrdma H$s Ý`yZV_ _moQ>mB© {ZåZ{b{IV _| go H$_ Zht hmoZr Mm{hE : 1
(H$) 150 {__r
(I) 250 {__r
(J) 350 {__r
(K) 450 {__r
The minimum thickness of a wall in stone masonry should not be less
than
(a) 150 mm
(b) 250 mm
(c) 350 mm
(d) 450 mm

321 2

3. _oham~ H$s Am§V[aH$ gVh H$mo H$hVo h¢ 1
(H$) A§VíMmn
(I) ~{híMmn
(J) S>mQ> nËWa
(K) erf©
The inner surface of an arch is known as
(a) Intrados
(b) Extrados
(c) Voussoir
(d) Crown

4. gr_|Q> H$m amgm`{ZH$ KQ>H$ Omo gr_|Q> Ho$ erK« O_Zo _| _XX H$aVm h¡ : 1
(H$) Am`aZ Am°ŠgmBS>
(I) _¡½Zr{e`_ Am°ŠgmBS>
(J) Ebw{_Zm
(K) bmB_
The chemical ingredient of cement which helps quick setting of the
cement is
(a) Iron oxide
(b) Magnesium oxide
(c) Alumina
(d) Lime

5. dm`w Amamohr H$_©H$ go ~Zr H§$H«$sQ> H$s gm_Ï`© H$_ hmoVr h¡ 1
(H$) 2 go 10%
(I) 10 go 15%
(J) 15 go 25%
(K) 25 go 30%
The strength of concrete using air entraining cement gets reduced by
(a) 2 to 10%
(b) 10 to 15%
(c) 15 to 25%
(d) 25 to 30%

321 3 P.T.O.

6. gyú_ (ewÕ) EJ«rJoQ> Ho$ Ý`yZV_ H$U H$m _mn h¡ 1
(H$) 2·36 {__r
(I) 4·75 {__r
(J) 12 {__r
(K) 20 {__r
The minimum particle size of fine aggregate is
(a) 2·36 mm
(b) 4·75 mm
(c) 12 mm
(d) 20 mm

7. ñbån narjU Ûmam H§$H«$sQ> H$s gwH$m`©Vm _mnVo h¢ 1
(H$) goH$ÊS> _|
(I) {H$bmoJ«m_ _|
(J) {__r _|
(K) {__r à{V goH$ÊS> _|
The workability of concrete by slump test is measured in
(a) second
(b) kilogram
(c) mm
(d) mm per second

8. {H$gr n[a`moOZm _| A§{V_ VH$ZrH$s àm{YH$ma hmoVm h¡ 1
(H$) ghm`H$ A{^`§Vm
(I) A{Yemgr A{^`§Vm
(J) AYrjH$ A{^`§Vm
(K) _w»` A{^`§Vm
For any project, the final technical authority is the
(a) Assistant Engineer
(b) Executive Engineer
(c) Superintending Engineer
(d) Chief Engineer
321 4

9. {H$gr n[a`moOZm H$mo H$aZo hoVw A{^`§Vm H$s J{V{d{Y/J{V{d{Y`m± hmoVr h¡¡/h¢ : 1
(H$) AmH$bZ (AZw_mZ)
(I) gmBQ> ßbmZ H$m AZw_moXZ
(J) {ZarjU
(K) Cn`w©º$ g^r
To carry out any project, the activity/activities of an engineer is/are
(a) Estimation
(b) Approval of site plan
(c) Inspection
(d) All of the above

10. {ZåZ{b{IV _| go H$m¡Z-gm gmBQ> a{OñQ>a Ho$ A§VJ©V Zht AmVm h¡ ? 1
(H$) gr_|Q> a{OñQ>a
(I) EO|Q> a{OñQ>a
(J) ñQ>rb a{OñQ>a
(K) {ZarjU a{OñQ>a
Which of the following does not come under site register ?
(a) Cement register
(b) Agent register
(c) Steel register
(d) Inspection register

IÊS> ~$
SECTION B
A{V bKw CÎmar` àíZ
Very Short Answer Questions

Xg àíZm| _| go {H$Ýht gmV àíZm| Ho$ CÎma Xr{OE & àË`oH$ àíZ 2 A§H$m| H$m h¡ &27=14
Answer any seven questions out of ten questions. Each question is of 2 marks.

11. ñQ>¡´n \$mCÝS>oeZ Š`m h¡ ? 2
What is strap foundation ?

12. B§p½be ~m°ÝS> H$s n[a^mfm Xr{OE & 2
Define English bond.

321 5 P.T.O.

13. gr_§oQ> H$s goqQ>J H$s n[a^mfm Xr{OE & 2
Define setting of cement.

14. _MmZ Š`m h¡ ? 2
What is scaffolding ?

15. {H$Zmam (emo[a¨J) Š`m h¡ ? 2
What is shoring ?

16. ZbgmµOr àUm{b`m| Ho$ àê$nm| H$s g§{já _§o ì`m»`m H$s{OE & 2
Explain the types of plumbing systems in brief.

17. {Z_m©U n[a`moOZm Ho$ g§gmYZm| (òmoVm|) go Amn Š`m g_PVo h¢ ? 2
What do you mean by resources in a construction project ?

18. Ob {dVaU Ho$ {bE à`wŠV {H$Ýht nm±M gmYZm| Ho$ Zm_ {b{IE & 2
Name any five devices used for the distribution of water.

19. {Z_m©U H$m`© H$s XoIaoI Ho$ {bE Om±M gyMr go Amn Š`m g_PVo h¢ ? 2
What do you mean by check list for construction work supervision ?

20. gwajm O_m Š`m h¡ ? 2
What is security deposit ?

IÊS> g$
SECTION C
bKw CÎmar` àíZ
Short Answer Questions

Xg àíZm| _| go {H$Ýht N>: àíZm| Ho$ CÎma Xr{OE & àË`oH$ àíZ 3 A§H$m| H$m h¡ & 36=18
Answer any six questions out of ten questions. Each question is of 3 marks.

21. g§`wº$ Ztd VWm ñQ´>¡n Ztd Ho$ _Ü` Š`m A§Va h¡ ? 3
What is the difference between combined footing and strap footing ?

22. {\«$ŠeZ nmBb VWm EÊS> {~`[a¨J nmBb _| A§Va ñnîQ> H$s{OE & 3
Differentiate between friction piles and end bearing piles.
321 6

23. H§$H«$sQ> H$s _O~yVr VWm {Q>H$mD$nZ go Amn Š`m g_PVo h¢ ? 3
What do you understand by strength and durability of concrete ?

24. H§$H«$sQ> H$s H$R>moaVm H$m Š`m AW© h¡ ? 3
What do you mean by hardening of concrete ?

25. N>Vm| H$m dJuH$aU H$s{OE & 3
Classify roofs.

26. ZrS>b ñH¡$\$mopëS>¨J (gyB© _MmZ) H$s ì`m»`m H$s{OE & 3
Explain needle scaffolding.

27. Ob {ZH$mg àUmbr _| Omb (Q´>¡n) Š`m h¢ ? 3
What are traps in drainage system ?

28. nm±M A{½Zgø nXmW© Ho$ Zm_ Xr{OE & 3
Name five fire resisting materials.

29. Zmn nwpñVH$m H$m Š`m à`moJ h¡ ? 3
What is the use of measurement book ?

30. gr{‹T>`m| Ho$ {Z_m©U hoVw à`wº$ gm_J«r Š`m h¢ ? 3
What are the materials used for the construction of stairs ?

IÊS> X$
SECTION D

XrK© CÎmar` àíZ
Long Answer Type Questions

nm±M àíZm| _| go {H$Ýht Xmo àíZm| Ho$ CÎma Xr{OE & àË`oH$ àíZ 5 A§H$m| H$m h¡ & 52=10
Answer any two questions out of five questions. Each question is of 5 marks.

31. bmo hrQ> nmoQ>©b¢S> gr_|Q> VWm nmoQ>©b¢S> nmoµOmobmZm gr_|Q H$s ì`m»`m H$s{OE &> 5
Explain Low Heat Portland Cement and Portland Pozzolana Cement.

32. H§$H«$sQ> Ho$ {bE à`wº$ EJ«rJoQ> Ho$ Š`m JwU hmoZo Mm{hE ? 5
What are the qualities of aggregates used for concrete ?

321 7 P.T.O.

33. Kam| Ho$ Ob {ZH$mg àUmbr hoVw à`wº$ nmBnm| Ho$ Zm_ (g§Ho$V) Š`m h¢ ? 5
What are the designations of pipes used for a house drainage system ?

34. ^maVr` _mZH$ IS 1641 – 1960 Ho$ AZwgma ^dZm| H$s A{½Z gwajm hoVw Š`m Amdí`H$VmE±
h¢ ? 5
What are the fire safety requirements for buildings as per Indian
Standard IS 1641 – 1960 ?

35. bH$‹S>r Ho$ \o«o$_m| H$mo ~ZmZo hoVw gm_mÝ` {d{ZX}e Š`m h¢ ? 5
What are the general specifications regarding construction of wooden
frames ?

321 8