Building Materials 1000+ MCQ with answer for CTET

1. 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

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

3. Pick up the correct statement from the following:
A. Plastics have generally low melting point
B. The coefficient of thermal expansion of plastics is about three times than that of steel
C. The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
D. All the above
Answer : D

4. Pick up the correct statement from the following:
A. In basic Bessemer process, the steel heats the converter
B. In open-hearth process, the furnace heats the steel
C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
D. All the above
Answer : D

5. 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. All the above
Answer : D

6. Plaster of Paris is obtained by calcining
A. Bauxite
B. Gypsum
C. Lime stone
D. None of these
Answer : B

7. 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
Answer : D

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

9. Snowcrete is one of the patent forms of
A. Distempers
B. Water proof cement paints
C. Enamel paints
D. Cellulose paints
Answer : B

10. 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 : D

11. The property by virtue of which lime sets under water, is known as
A. Slacking
B. Setting
C. Hydraulicity
D. Calcining
Answer : C

12. Soundness test of cement determines
A. Quality of free lime
B. Ultimate strength
C. Durability
D. Initial setting
Answer : A

13. Refractory bricks are used for
A. Retaining walls
B. Columns
C. Piers
D. Combustion chambers
Answer : D

14. The main constituent of fly-ash, is
A. Aluminium oxide
B. Silica
C. Ferrous oxide
D. All of these
Answer : D

15. Specific gravity for most of the building stones lies between
A. 1.5 to 2.0
B. 2.0 to 2.5
C. 2.5 to 3.0
D. 3.0 to 3.5
Answer : C

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

17. The softest rock is
A. Marble
B. Diamond
C. Talc
D. Quartz
Answer : C

18. In the cement the compound quickest to react with water, is
A. Tri-calcium aluminate
B. Tetra-calcium alumino-ferrite
C. Tri-calcium silicate
D. Di-calcium silicate
Answer : A

19. According to IS 399-1963, the weight of the timber is specified at
A. 8% moisture content
B. 10% moisture content
C. 12% moisture content
D. 14% moisture content
Answer : C

20. The type of bond provided in brick masonry for carrying heavy loads is
A. Single Flemish bond
B. Double Flemish bond
C. English bond
D. Zigzag bond
Answer : C

21. Pick up the correct statement from the following:
A. The free quartz suddenly expands at a temperature lower than 600°C
B. The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
C. The sand stone with silicates resist a fire in a better way
D. All the above
Answer : D

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

23. The main ingredients of Portland cement are
A. Lime and silica
B. Lime and alumina
C. Silica and alumina
D. Lime and iron
Answer : A

24. Assertion A : Normally turpentine oil is recommended as thinnr for indoor painting. Reason R : Turpentine oil is costlier than other thinners. 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 : B

25. Fibre glass
A. Retains heat-longer
B. Has a higher strength to weight ratio
C. Is shock proof and fire retardant
D. All the above
Answer : D

26. Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
A. Absence of sun light
B. Dampness
C. Presence of sap
D. All the above
Answer : D

27. The frog of the brick in a brick masonry is generally kept on
A. Bottom face
B. Top face
C. Shorter side
D. Longer side
Answer : B

28. Steel contains carbon approximately
A. 1.50% to 5.6%
B. 0.05% to 1.75%
C. 0.25 %
D. None to these
Answer : B

29. A good building stone should not absorb water more than
A. 5 %
B. 10 %
C. 15 %
D. 20 %
Answer : A

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

31. A prime coat is given to steel work with
A. An oxide of iron paint
B. A mixture of white lead and lead paint
C. A special paint
D. Cement paint
Answer : B

32. 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

33. The plastics made from cellulose resin
A. Are as clear as glass
B. Are tough and strong
C. Possess excellent electrical properties
D. All the above
Answer : D

34. Pick up the correct statement from the following:
A. Roasting is not necessary if iron ore is an oxide
B. Impurities float on the molten iron as slag
C. The slag contains lime about 45%
D. All the above
Answer : D

35. The cracks which extend from bark towards the sap wood in the cross section of a tree, are called
A. Radial shakes
B. Star shakes
C. Heart shakes
D. Cup shakes
Answer : B

36. The wedging is adopted for quarrying costly stratified rock such as
A. Laterite
B. Marble
C. Limestone
D. All the above
Answer : D

37. The moisture content in a well seasoned timber is
A. 4 % to 6 %
B. 10 % to 12 %
C. 15 % to 20 %
D. 100 %
Answer : B

38. 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

39. Crushing strength of a first class brick should not be less than
A. 3.5 N/mm²
B. 7.0 N/mm²
C. 10.5 N/mm²
D. 14.0 N/mm²
Answer : C

40. 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

41. Expansion Joints in masonry walls are provided in wall lengths usater than
A. 10 m
B. 20 m
C. 30 m
D. 40 m
Answer : D

42. The base material for distemper, is
A. Chalk
B. Lime
C. Lime putty
D. Cement wash
Answer : A

43. Cast iron is used for
A. Structural works in beams
B. Small sized water pipes
C. Columns and struts
D. None to these
Answer : C

44. Soundness of cement is tested by
A. Vicat's apparatus
B. Le-chatelier apparatus
C. Compressive strength testing apparatus
D. None of these
Answer : B

45. Lacquer paints
A. Are generally applied on structural steel
B. Are less durable as compared to enamel paints
C. Consist of resin and nitro-cellulose
D. All the above
Answer : D

46. The timber having maximum resistance against white ants, is obtained from
A. Chir
B. Shishum
C. Sal
D. Teak
Answer : B

47. Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is
A. (i) and (iv)
B. (ii) and (iii)
C. (i) and (ii)
D. (iii) and (iv)
Answer : B

48. Non acid-resistant asbestos is:
A. Tremolite asbestos
B. Chrysotile asbestos
C. Amosite asbestos
D. None of these
Answer : B

49. Bituminous fells are used for
A. Covering A.C. sheets
B. Covering sloping roofs
C. D.P.C.
D. None to these
Answer : A

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