1000+ Building Materials MCQ for GATE [Solved]

1. The low voltage porcelain is mainly used for
A. Switch block
B. Insulating tubes
C. Lamp sockets
D. All of these
Answer : D

2. Acrylic sheets
A. Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
B. Are generally unaffected by most household detergents
C. Possess the light transmission rate of 93%
D. All the above
Answer : D

3. Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Answer : B

4. The steel which contains fissures and cavities, is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : A

5. The most important tool in brick laying for lifting and spreading mortar and for forming joints is
A. Trowel
B. Square
C. Bolster
D. Scutch
Answer : A

6. Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below:
A. Both A and R is true and, R is the correct explanation of A
B. Both A and R is true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
Answer : A

7. Quartzite, a metamorphic stone is
A. Hard
B. Brittle
C. Crystalline
D. All the above
Answer : D

8. Pick up the compound responsible for early strength of cement from the following:
A. Tetra-calcium alumino-ferrite
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. Di-calcium silicate
Answer : B

9. The ultimate tensile strength of structural mild steel is about
A. 160 N/mm²
B. 260 N/mm²
C. 420 N/mm²
D. 520 N/mm²
Answer : C

10. Which of the following bricks are used for lining of furnaces?
A. Over-burnt bricks
B. Under-burnt bricks
C. Refractory bricks
D. First class bricks
Answer : C

11. Which of the following cements is suitable for use in massive concrete structures such as large dams?
A. Ordinary Portland cement
B. Low heat cement
C. Rapid hardening cement
D. Sulphate resisting cement
Answer : B

12. Chemically, marble is known as
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : C

13. Plastic bitumen is generally used for
A. Road pavements
B. Expansion joints
C. Crack fillings
D. None to these
Answer : C

14. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
A. Alumina
B. Lime
C. Iron-oxide
D. Magnesia
Answer : A

15. Asbestos is
A. Corrugated sheet used for roofing
B. An incombustible fire proof material
C. An organic substance
D. All the above
Answer : D

16. Pick up the polymineralic rock from the following:
A. Quartz sand
B. Pure gypsum
C. Magnesite
D. Granite
Answer : D

17. Pick up the correct statement from the following:
A. The low voltage porcelain is prepared by wet process
B. The high voltage porcelain is prepared by dry process
C. The low voltage porcelain is prepared by dry process
D. None of the above
Answer : C

18. Lime stones are generally known as
A. Aqueous rocks
B. Sedimentary rocks
C. Stratified rocks
D. All the above
Answer : D

19. Quick lime
A. Generates heat when added to water
B. Reacts with carbon dioxide
C. May be used for white-washing
D. All the above
Answer : D

20. Glazing of clay products, is done
A. To improve their appearance
B. To protect them from atmospheric effect
C. To protect them from corrosive action
D. All the above
Answer : D

21. Pick up the correct statement from the following:
A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
B. The edges of a finished wrought iron are rough due to red shortage
C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
D. All the above
Answer : D

22. Asphalt is obtained from
A. Petroleum distillation
B. Bitumen distillation
C. Plastic distillation
D. None of these
Answer : A

23. Durability of building stone is affected by its
A. Chemical composition
B. Texture
C. Resistance to atmosphere
D. All the above
Answer : D

24. 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 : C

25. Which of the following has more fire resisting characteristics?
A. Marble
B. Lime stone
C. Compact sand stone
D. Granite
Answer : C

26. Bulking of sand is caused due to
A. Surface moisture
B. Air voids
C. Viscosity
D. Clay contents
Answer : A

27. Upto a maximum of 72% of iron, is available in
A. Magnetite
B. Limonite
C. Siderite
D. Iron pyrites
Answer : A

28. Which one of the following is an air binding material?
A. Gypsum
B. Acid-resistant cement
C. Quick lime
D. All of these
Answer : D

29. The coefficient of hardness of stones used in road work should be greater than
A. 10
B. 12
C. 15
D. 17
Answer : D

30. A good quality stone absorbs water less than
A. 5 %
B. 10 %
C. 15 %
D. 25 %
Answer : A

31. Cast steel is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : B

32. Bitumen completely dissolves in
A. Carbon bisulphide
B. Chloroform
C. Coal tar
D. All of these
Answer : D

33. Lime concrete is generally used for
A. Wall foundations
B. Flooring at ground level
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : B

34. Pig iron is manufactured from the ores by
A. Dressing
B. Calcination and roasting
C. Smelting
D. All the above
Answer : D

35. Asbestos cement
A. Is brittle
B. Warps due to changes in humidity
C. Strength is lowered when saturated by water
D. All of the above
Answer : D

36. Lacquer is
A. Oil paint
B. Distemper
C. Spirit varnish
D. None to these
Answer : C

37. Based on its dry weight, a freshly felled tree may contain water
A. 25 %
B. 50 %
C. 75 %
D. 100 %
Answer : D

38. Which one of the following polymers is obtained from condensation polymerization?
A. Phenol formaldehyde
B. Carbamide
C. Melamine-formaldehyde
D. All of these
Answer : D

39. Strength of cement concrete primarily depends upon
A. Quality of water
B. Quantity of aggregate
C. Quantity of cement
D. Water-cement ratio
Answer : D

40. Linseed oil is used in paints as
A. Thinner
B. Vehicle
C. Base
D. Drier
Answer : D

41. Pick up the correct statement from the following:
A. Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
B. Cupola furnace is used for the manufacture of cast iron
C. Red short iron is of no value for welding purpose
D. All the above
Answer : D

42. A stone is rejected if it absorbs water more than
A. 5 %
B. 10 %
C. 15 %
D. 20 %
Answer : B

43. 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 : C

44. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they
A. Split easily
B. Are affected by moisture
C. Both (A) and (B)
D. None of these
Answer : C

45. The usual percentages of clay and metal in cermet are:
A. 50%, 50%
B. 60%, 40%
C. 70%, 30%
D. 80%, 20%
Answer : D

46. The plastics prepared from Vinyl resin are
A. Odourless
B. Non-toxic
C. Transparent
D. All of these
Answer : D

47. The commonly used colour pigment in paints, is
A. Ambers
B. Carbon black
C. Iron oxide
D. All the above
Answer : D

48. The weight of 1 m³ of brick earth, is about
A. 1200 kg
B. 1500 kg
C. 1800 kg
D. 2000 kg
Answer : C

49. Bitumen felt is used for
A. Water proofing
B. Damp proofing
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : C

50. Bitumen may be dissolved in
A. Carbondioxide
B. Water
C. Sodium chloride
D. Carbon disulphide
Answer : D