Civil Engineering - Building Materials MCQs Part 4

1. Mastic asphalt is normally used for

A.
sound insulation

B.
water proofing

C.
fire proofing

D.
none to these.

 Answer Option B

2. Lime stone is not a

A.
sedimentary rock

B.
stratified rock

C.
aqueous rock

D.
metamorphic rock.

 Answer Option D

3. The size of modular bricks, is

A.
10 x 10 x 9 cm

B.
19 x 9 x 9 cm

C.
22.5 x 10 x 8.5 cm

D.
22.5 x 8.0 x 9 cm.

 Answer Option B

4. A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called

A.
slate

B.
plank

C.
board

D.
strip.

 Answer Option D

5. Pig iron is manufactured from the ores by

A.
dressing

B.
calcination and roasting

C.
smelting

D.
all the above.

 Answer Option D

6. Quick lime

A. generates heat when added to water

B. reacts with carbon dioxide

C. may be used for white-washing

D. when mixed with water forms slaked lime

E. all the above.

 Answer Option E

7. Age of a tree may be ascertained by

A. radius of its stem

B. circumference of its stem

C. number of branches

D. number of annual rings.

 Answer Option D

8. The portion of a brick cut to form angles other than right angles in plan, is known as

A. queen closer

B. king closer

C. closer

D. squint brick.

 Answer Option D

9. Pick up the correct statement from the following:

A. Slaked lime contains calcium hydroxide

B. Quick lime contains calcium oxide

C. Slaked lime may be obtained from quick lime

D. Slaked lime is obtained by adding water to quick lime

E. All the above.

 Answer Option E

10. Plywood is obtained by gluing wooden sheets at

A. 100 to 150 N/cm2

B. 100 to 130°C

C. both (a) and (b)

D. Neither (a) nor (b).

 Answer Option C

11. The low voltage porcelain is mainly used for

A. switch block

B. insulating tubes

C. lamp sockets

D. All of these.

 Answer Option D

12. Putty is

A. made with finely powdered chalk and linseed oil

B. used for fixing glass panes

C. softened by a solution of pearl ash and quick-lime soaked in water

D. all the above.

 Answer Option D

13. The initial setting time of hydraulic lime, is

A. 30 minutes

B. 60 minutes

C. 90 minutes

D. 120 minutes

E. 150 minutes.

 Answer Option D

14. PVC stands for

A. plastic very compact

B. polythene vinyl chloride

C. polythene vinyl carbon

D. polythene vanadium carbide.

 Answer Option B

15. Generally wooden moulds are made from

A. ply wood

B. shisham wood

C. deodar wood

D. teak wood

E. hard wood.

 Answer Option B

16. Cement paints usually

A. contain hydrated lime

B. contain 5% to 10% colour pigments

C. are prepared with white cement

D. contain 5% sodium chloride

E. all the above.

 Answer Option E

17. The cement becomes unsound by the presence of excess

A. sulphur

B. magnesia

C. lime

D. All of these.

 Answer Option D

18. The kiln which may work throughout the year, is

A. Clamp

B. Bull's kiln

C. Hoffman's kiln

D. none of these.

 Answer Option C

19. The minimum compressive strength of 1st class bricks should be

A. 75 kg/cm2

B. 90 kg/cm2

C. 100 kg/cm2

D. 120 kg/cm2

E. 130 kg/cm2.

 Answer Option C

20. A volatile substance added to a paint to make its application easy and smooth, is known as

A. base

B. solvent

C. vehicle

D. none to these.

 Answer Option B

21. The percentage of water for normal consistency, is

A. 5% to 15%

B. 10% to 25%

C. 15% to 25%

D. 20% to 30%

E. 25% to 35%.

 Answer Option E

22. Pick up the correct statement from the following:

A. The plywoods do not split or crack due to changes in atmosphere

B. The commercial plywoods are available upto 150 cm wide and upto 300 cm long

C. The plywoods possess uniform tensile strength in all directions

D. The plywoods are light in weight

E. All the above.

 Answer Option E

23. The main ingredient of a good quality brick earth, is

A. magnesia

B. lime

C. silica

D. alumina.

 Answer Option D

24. Bitumen is generally obtained from

A. organic material

B. synthetic material

C. petroleum product

D. coal.

 Answer Option C

25. For one cubic metre of brick masonry, number of bricks required, is

A. 400

B. 425

C. 450

D. 500

E. 550.

 Answer Option D

26. The steel which contains fissures and cavities, is manufactured by

A. Cementation process

B. Crucible process

C. Bessemer process

D. Open hearth process.

 Answer Option A

27. Pick up the volcanic rock from the following:

A. Granite

B. Dolerite

C. Basalt

D. All the above.

 Answer Option C

28. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is

A. right angles

B. 45°

C. 60°

D. parallel

E. None of these.

 Answer Option A

29. The most durable varnish is

A. water varnish

B. spirit varnish

C. turpentine varnish

D. oil varnish

E. none of these.

 Answer Option D

30. Softer variety of steel may be obtained by

A. Cementation process

B. crucible process

C. Bessemer process

D. Open hearth process.

 Answer Option C

31. Pick up the correct statement from the following:

A. The baked earth is called terra-cotta

B. The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware

C. The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware

D. The articles prepared from fine earthen ware which is white, thin and semi-transparent, are called procelain

E. All the above.

 Answer Option E

32. Calcination of iron ores is done

A. to remove moisture

B. to remove carbonic acid

C. by roasting in heaps

D. after dressing

E. all the above.

 Answer Option E

33. Strength of cement concrete primarily depends upon

A. quality of water

B. quantity of aggregate

C. quantity of cement

D. water-cement ratio.

 Answer Option D

34. Rapid hardening cement contains

A. Tri-calcium silicate

B. Tri-calcium aluminate

C. Tetra-calcium alumino-ferrite

D. Dicalcium silicate.

 Answer Option A

35. Bitumen emulsion is

A. a liquid containing bitumen in suspension

B. a paint

C. used as anti-corrosive paint

D. all the above.

 Answer Option D

36. The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted to

A. grey cast iron

B. white cast iron

C. mottled cast iron

D. toughed cast iron.

 Answer Option C

37. Jhumb bricks are

A. under burnt

B. over burnt

C. kutcha

D. none of these.

 Answer Option B

38. Plastic bitumen is generally used for

A. road pavements

B. expansion joints

C. crack fillings

D. none to these.

 Answer Option C

39. Pick up the correct statement from the following:

A. The heating of a material to redness in contact with air, is known as calcination

B. The property of lime by which it sets or hardens in damp places having no free circulation of air is called setting

C. The product that remains after calcination of limestone, is called lime

D. All the above.

 Answer Option D

40. The commonly used thinner in oil paints, is

A. naptha

B. turpentine

C. both (a) and (b)

D. neither (a) nor (b)

E. none the these.

 Answer Option C

41. Cast iron

A. is obtained by purifying pig iron

B. is manufactured in required shapes

C. may contain 2 to 5 per cent of carbon with other impurities

D. is remelted in a cupola furnace

E. all the above.

 Answer Option E

42. Asbestos is

A. corrugated sheet used for roofing

B. an incombustible fire proof material

C. an organic substance

D. a bad insulator for sound and heat

E. all the above.

 Answer Option E

43. In a rock calcium carbonate predominates. State whether it is :

A. Sillicious rock

B. Argillaceous rock

C. Calcareous rock

D. None of these.

 Answer Option C

44. In order of increasing percentage of silica, the correct sequence is

A. sandy clay, calcareous clay, pure clay

B. calcareous clay, pure clay, sandy clay

C. pure clay, sandy clay, calcareous clay

D. None of these.

 Answer Option B

45. The rocks which are formed due to pouring of magma at the earth's surface are called

A. Plutonic rocks

B. Hypabyssal rocks

C. Volcanic rocks

D. Igneous rocks

 Answer Option C

46. Pick up the correct statement from the following:

A. Steel produced by open hearth process is milder than that obtained by the bessemer process

B. Engineers prefer open hearth steel for structural purpose as it is more homogenous

C. Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel

D. all the above.

 Answer Option D

47. Pick up the correct statement from the following:

A. The distinct plane of division along which a stone can easily be split, is called natural bed of stone

B. The natural bed of sedimentary rocks is along the planes of stratification

C. The natural bed of igneous rocks is not defined

D. All the above.

 Answer Option D

48. Invar contains

A. 12% of nickel

B. 24% of nickel

C. 30% to nickel

D. 36% of nickel.

 Answer Option D

49. Based on flow quality, the sequence of pipes is

A. A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes

B. C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes

C. C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes

D. None of these.

 Answer Option B