Civil Engineering - Building Materials MCQs Part 2

1. The rocks in which argil (or clay) predominates, are called

A.
sillicious rocks

B.
argillaceous rocks

C.
calcareous rocks

D.
igneous rocks.

 Answer Option B

2. A badly mixed cement concrete results in

A.
segregation

B.
bleeding

C.
honey combing

D.
none to these.

 Answer Option C

3. Pick up the correct statement regarding low heat cement from the following:

A.
It possesses less compressive strength

B.
Its initial setting time is about one hour

C.
Its final setting time is about 10 hours

D.
Its mainly used for mass concrete work

E.
All the above.

 Answer Option E

4. Chemically, marble is known as

A.
metamorphic rock

B.
argillaceous rock

C.
calcareous rock

D.
silicious rock.

 Answer Option C

5. Inner part of a timber log surrounding the pith, is called

A.
sapwood

B.
cambium layer

C.
heart wood

D.
none to these.

 Answer Option C

6. The filler used in plastic bitumen, is

A. shale powder

B. talc powder

C. asbestos powder

D. plastic powder

E. none of these.

 Answer Option C

7. Resins are

A. not soluble in water

B. soluble in spirit

C. used in varnishes

D. left behind on evaporation of oil

E. all the above.

 Answer Option E

8. Refractory bricks are used for

A. retaining walls

B. columns

C. piers

D. combustion chambers.

 Answer Option D

9. Expanded metal is

A. manufactured from steel sheets

B. used for reinforced concrete in road pavements

C. measured in term of SWM (shortway mesh) and LWM (long way mesh)

D. all the above.

 Answer Option D

10. The rock generally used for roofing, is

A. granite

B. basalt

C. slate

D. pumice.

 Answer Option C

11. Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a

A. cant

B. deal

C. baulk

D. strip.

 Answer Option C

12. Quick lime (or caustic lime)

A. is obtained by the calcination of pure lime stone

B. has great affinity to moisture

C. is amorphous

D. All the above.

 Answer Option D

13. Pick up the correct statement from the following:

A. soft stones are required for carving

B. light stones are required for arches

C. hard stones are required to stand high pressure

D. All the above.

 Answer Option D

14. Name the type of cement from the following for canal linings :

A. sulphate resisting cement

B. rapid hardening cement

C. quick setting cement

D. pozzuolana cement.

 Answer Option A

15. Mastic asphalt is generally used for

A. damp proof course

B. water proof layer

C. partition walls

D. both (a) and (b).

 Answer Option D

16. Black marble is generally found in the district of

A. Jodhpur

B. Jaipur

C. Jabalpur

D. Jaisalmer

E. Pune.

 Answer Option B

17. The most fire resistant paints are :

A. enamel paints

B. aluminium paints

C. asbestos paints

D. cement paints.

 Answer Option C

18. If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is

A. 0.70 P

B. 0.75 P

C. 0.80 P

D. 0.85 P

E. 0.90 P.

 Answer Option D

19. A pug mill is used for

A. softening brick earth

B. moulding brick earth

C. tempering brick earth

D. providing brick earth

E. all the above.

 Answer Option C

20. A good brick earth should contain :

A. about 20% to 30% of alumina

B. about 50% to 60% of silica

C. not more than 5% of lime

D. about 5 to 6% of oxide of lime

E. All the above.

 Answer Option E

21. The commonly used lime in white washing, is

A. white lime

B. fat lime

C. hydraulic lime

D. lime

E. quick lime.

 Answer Option B

22. Shingle is

A. decomposed laterite

B. crushed granite

C. water bound pebbles

D. air weathered rock.

 Answer Option C

23. Pick up the plutonic rock from the following:

A. Granite

B. Dolerite

C. Basalt

D. All the above.

 Answer Option A

24. The lime which contains mainly calcium oxide and slacks with water, is

A. fat lime

B. quick lime

C. hydraulic lime

D. poor lime

E. none of these.

 Answer Option B

25. Seasoning is

A. a process of removing sap

B. creosoting

C. painting with sodium silicate

D. coating with tar.

 Answer Option A

26. Inhaling of fly-ash over a long period causes

A. silicosis

B. fibrosis of lungs

C. bronchitis

D. pneumonitis

E. All of these.

 Answer Option E

27. Minimum required water cement ratio for a workable concrete, is

A. 0.30

B. 0.40

C. 0.50

D. 0.60

E. 1.0.

 Answer Option B

28. Rocks formed due to alteration of original structure due to heat and excessive pressure are called

A. sedimentary rocks

B. igneous rocks

C. metamorphic rocks

D. none of these.

 Answer Option C

29. The compound of Portland cement which contributes to the strength after two to three years is

A. Tricalcium silicate

B. Di-calcium silicate

C. Tricalcium aluminate

D. Tetracalcium alumino ferrite.

 Answer Option B

30. For slaking of 10 kg of CaO, the theoretical amount of water is

A. 2.2 kg

B. 1.5 kg

C. 3.2 kg

D. None of these.

 Answer Option C

31. Pick up the correct statement from the following: Method of sawing timber

A. tangentially to annual rings, is known as tangential method.

B. in four quarters such that each board cuts annual rings at angles not less than 45°, is known as quarter sawing method.

C. cut out of quarter logs, parallel to the medullary rays and perpendicular to annual rings, is known as radial sawing.

D. all the above.

 Answer Option D

32. Clay and silt content in a good brick earth must be at least

A. 50%

B. 40%

C. 30%

D. 25%

E. 20%.

 Answer Option A

33. Bessemer process is used for the manufacture of

A. Pig iron

B. cast iron

C. Wrought iron

D. Steel.

 Answer Option D

34. The portion of the brick without a triangular corner equal to half the width and half the length, is called

A. closer

B. queen closer

C. king closer

D. squint brick.

 Answer Option C

35. The standard size of masonry bricks, is

A. 18 cm x 8 cm x 8 cm

B. 19 cm x 9 cm x 9 cm

C. 20 cm x 10 cm x 10 cm

D. 21 cm x 11 cm x 11 cm

E. none of these.

 Answer Option B

36. Which one of the following is an air binding material ?

A. Gypsum

B. Acid-resistant cement

C. Quick lime

D. All of these.

 Answer Option D

37. A good quality stone absorbs water less than

A. 5%

B. 10%

C. 15%

D. 20%

E. 25%.

 Answer Option A

38. Pick up the correct statement from the following:

A. Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite

B. Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite

C. Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic

D. All the above.

 Answer Option D

39. Plywood is made from

A. common timber

B. bamboo fibre

C. teak wood only

D. asbestos sheets.

 Answer Option C

40. Soundness test of cement determines

A. quality of free lime

B. ultimate strength

C. durability

D. initial setting

E. all the above.

 Answer Option A

41. The slag which floats on the surface of the molten iron generally contains

A. Lime (CaO) 45%

B. Silica (SiO2) 35%

C. Alumina (Al2O3) 12%

D. MgO, CaSO4, KMnO2 and FeO 8%

E. all the above.

 Answer Option E

42. Minimum of 40% of iron, is available in

A. Magnetite

B. Red haemetite

C. Limonite

D. Siderite

E. Black band.

 Answer Option E

43. If the iron ore contains clay as an impurity, the flux added during calcination, is

A. clay

B. lime stone

C. argillaceous iron ore

D. all the above.

 Answer Option B

44. Cement is said to be of good quality if

A. its colour is not greenish grey

B. one feels cool by thrusting one's hand in the cement bag

C. it is not smooth when rubbed in between fingers

D. a handful of cement thrown into a bucket of water does not float

E. none of these.

 Answer Option E

45. Cast steel is manufactured by

A. Cementation process

B. Crucible process

C. Bessemer process

D. Open hearth process.

 Answer Option B

46. For the manufacture of plywood, veneers are placed so that grains of adjacent veneers

A. run at right angles

B. parallel

C. inclined at 45°

D. inclined at 60°.

 Answer Option A

47. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than

A. 10%

B. 15%

C. 20%

D. 25%

E. 5%.

 Answer Option C

48. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:

A. 15, 75, 10

B. 75, 10, 15

C. 10, 15, 75

D. 10, 75, 15.

 Answer Option A

49. Geologically, marble is known as

A. sedimentary rock

B. igneous rock

C. metamorphic rock

D. stratified rock.

 Answer Option C