XAT - Building Materials 1000+ MCQ [Solved] PDF Download

1. If water required for 1 bag of cement is 30 litres, the water cement ratio is:
A. 0.40
B. 0.50
C. 0.60
D. None of these
Answer : C

2. The most durable varnish is
A. Water varnish
B. Spirit varnish
C. Turpentine varnish
D. Oil varnish
Answer : D

3. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
A. 1
B. 2
C. 3
D. 4
Answer : B

4. Plastic asphalt is
A. Used as a water proofing layer over roof
B. A mixture of cement and asphalt
C. A natural asphalt
D. A refinery product
Answer : B

5. 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. All the above
Answer : D

6. In a mortar, the binding material is
A. Cement
B. Sand
C. Surkhi
D. Cinder
Answer : A

7. The colour of statuary marble used for sculptor's work, is
A. Red
B. Blue
C. White
D. Green
Answer : C

8. Shingle is
A. Decomposed laterite
B. Crushed granite
C. Water bound pebbles
D. Air weathered rock
Answer : A

9. Acrylic is the name of
A. Cellulose resin
B. Alkyd resin
C. Methyl methacrylate
D. Cumarone-indene
Answer : C

10. The percentage of alumina in a good brick earth lies between
A. 5 to 10 %
B. 20 to 30 %
C. 50 to 60 %
D. 70 to 80 %
Answer : B

11. Elastomers can extend upto
A. Five times their original dimensions
B. Seven times their original dimensions
C. Ten times their original dimensions
D. Three times their original dimensions
Answer : C

12. Pick up correct statement from the following:
A. Fibre boards are used for thermal and acoustic control
B. Fibre boards are used for light weight standing members
C. Fibre boards are obtained by impregnating a resin product on fibres
D. All the above
Answer : D

13. 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 : D

14. During pudding
A. Molten metal is kept clear of the fuel
B. Carbon is converted into carbonic acid gas
C. Silicon forms a slag
D. All the above
Answer : D

15. Which of the following cements contains maximum percentage of dicalcium silicate?
A. Ordinary Portland cement
B. Low heat cement
C. Rapid hardening cement
D. Sulphate resisting cement
Answer : B

16. To retard the initial setting time of cement, the compound responsible, is
A. Tri-calcium silicate
B. Gypsum
C. Di-calcium silicate
D. Tri-calcium aluminate
Answer : B

17. The fire clay contains pure
A. Lime
B. Oxide of iron
C. Hydrated aluminium silicate
D. Magnesium
Answer : C

18. The most commonly used synthetic abrasive is
A. Aluminium carbide
B. Boric acid
C. Silicon
D. All of these
Answer : D

19. For a 50 kg cement bag water required, is
A. 16.5 litres
B. 18.5 litres
C. 20.5 litres
D. 22.5 litres
Answer : D

20. German silver is an alloy of
A. Zinc, lead and nickel
B. Silver, gold and lead
C. Copper, nickel and zinc
D. Copper, brass and zinc
Answer : C

21. Which of the following sedimentary rocks changes into quartzite by metamorphic action?
A. Sand stone
B. Lime stone
C. Shale
D. Gypsum
Answer : A

22. Pick up the non-inflammable plastic from the following:
A. Cellulose acetate plastics
B. Polyvinyl chloride plastics
C. Phenol formaldehyde plastic
D. Urea formaldehyde plastic
Answer : B

23. Pick up the correct statement from the following:
A. The phenol is carbolic acid
B. The phenol is either extracted from coal-tar or prepared from benzene
C. Phenol reacts with formaldehyde, to form phenol formaldehyde resin
D. All the above
Answer : D

24. Which of the following should be used for hearting of thicker walls?
A. Headers
B. Stretchers
C. Brick bats
D. Queen closer
Answer : A

25. Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing The correct answer is
A. (i) and (ii)
B. (i) and (iv)
C. (ii) and (iii)
D. (iii) and (iv)
Answer : A

26. Seasoning of timber is done for
A. Increasing moisture content
B. Decreasing moisture content
C. Increasing strength of timber
D. None to these
Answer : B

27. The most common admixture which is used to accelerate the initial set of concrete is
A. Gypsum
B. Calcium chloride
C. Calcium carbonate
D. None of the above
Answer : B

28. 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 : A

29. Pick up the rock which is not a sedimentary rock from the following:
A. Gravel
B. Sand stone
C. Gypsum
D. Dolerite
Answer : D

30. French polish is
A. Oil paint
B. Distemper
C. Spirit varnish
D. None to these
Answer : C

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

32. The steel used in R.C.C. work is
A. Stainless steel
B. Mild steel
C. High carbon steel
D. Wrought iron
Answer : B

33. The presence of sand in brick earth prevents:
A. Cracking of bricks
B. Shrinkage of bricks
C. Warping of bricks
D. None of these
Answer : C

34. The initial setting time for ordinary Portland cement as per IS specifications should not be less than
A. 10 minutes
B. 30 minutes
C. 60 minutes
D. 600 minute
Answer : B

35. 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 : C

36. Duco paints are
A. Plastic paints
B. Cellulose paints
C. Emulsion paints
D. Oil paints
Answer : D

37. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
A. Quick setting cement
B. Rapid hardening cement
C. White cement
D. Low heat Portland cement
Answer : C

38. The tendency of a stone is, to split along:
A. Texture
B. Fracture
C. Cleavage
D. Structure
Answer : C

39. The thermosetting plastic
A. Becomes rigid when moulded at suitable pressure and temperature
B. At 127°C to 177°C permanently set and further application of heat does not soften it
C. Chars at 343°C
D. All the above
Answer : D

40. 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. All the above
Answer : D

41. Which of the following timbers is suitable for making sports goods?
A. Mulberry
B. Mahogany
C. Sal
D. Deodar
Answer : A

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

43. Percentage of silica in a good brick earth lies between
A. 5 to 10 %
B. 20 to 30 %
C. 50 to 60 %
D. 70 to 80 %
Answer : C

44. Granite is not suitable for ordinary building purpose because
A. It cannot be polished
B. It is not a fire proof material
C. It is costly
D. It has less crushing strength
Answer : C

45. Clay and silt content in a good brick earth must be at least
A. 50 %
B. 40 %
C. 30 %
D. 25 %
Answer : A

46. Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below:
A. Both A and R is true and R is correct explanation of A
B. Both A and R is true and R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
Answer : A

47. Quick lime is
A. Calcium carbonate
B. Calcium oxide
C. Calcium hydroxide
D. None of the above
Answer : B

48. 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

49. The stones obtained by blasting are used as
A. Ballast in railways
B. Aggregates for concrete
C. Road metal
D. All the above
Answer : D

50. Stucco paints are suitable for
A. Stone masonry
B. Brick walls
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : C