Building Materials MCQ Solved Paper for SSC JE

1. Expanded metal is
A. Manufactured from steel sheets
B. Used for reinforced concrete in road pavements
C. Measured in term of SWM (short way mesh) and LWM (long way mesh)
D. All the above
Answer : D

2. Pick up the plutonic rock from the following:
A. Granite
B. Dolerite
C. Basalt
D. All the above
Answer : A

3. Advantage of a clamp compared to a kiln for burning bricks is that
A. It takes less time for burning
B. It gives more output of first class bricks
C. It has less initial cost
D. It is suitable when bricks are required in large numbers
Answer : C

4. Blister steel
A. Is obtained by cementation process
B. Is full of fissures and cavities
C. Can be easily welded
D. All the above
Answer : D

5. 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

6. 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 : D

7. The amount of water used for one kg of distemper is
A. 0.2 liter
B. 0.4 liter
C. 0.6 liter
D. 0.8 liter
Answer : C

8. 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

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

10. 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

11. The PVC doors and windows are preferred as they are
A. Rust proof
B. Rot proof
C. Water proof
D. All of these
Answer : D

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

13. Index number expressing the relative sizes of both coarse and fine aggregates, is called
A. Proportioning of aggregates
B. Fineness modulus
C. Grading of aggregates
D. None of these
Answer : B

14. Which of the following stresses is used for identifying the quality of structural steel?
A. Ultimate stress
B. Yield stress
C. Proof stress
D. None of the above
Answer : B

15. Addition of pozzolana to ordinary Portland cement increases
A. Bleeding
B. Shrinkage
C. Permeability
D. Heat of hydration
Answer : B

16. 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

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

18. The constituent of cement which is responsible for all the undesirable properties of cement is
A. Di-calcium silicate
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
Answer : C

19. 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. All the above
Answer : D

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

21. Pick up the correct statement from the following:
A. Corrugated sheet iron is made by passing plain sheets between grooved rollers
B. Strength and stiffness of corrugated sheets are considerably increased
C. Corrugated sheets are generally used on slanting roofs
D. All the above
Answer : D

22. Ground glass
A. Is made by grinding its one side
B. Is made by melting powdered glass paints surface
C. Is used for getting light without transparency
D. All the above
Answer : D

23. 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

24. A bull nose brick is not used for
A. Rounding off sharp corners
B. Pillars
C. Decoration purpose
D. Arches
Answer : D

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

26. The commonly used drying oil for oil paints, is
A. Olive oil
B. Linseed oil
C. Kerosene oil
D. Acetate of lead
Answer : D

27. Invar contains
A. 12% of nickel
B. 24% of nickel
C. 30% to nickel
D. 36% of nickel
Answer : D

28. Mastic asphalt is
A. Acid resisting material
B. Non-corrosive material
C. Corrosive material
D. Heating-resisting material
Answer : B

29. Bitumen is generally obtained from
A. Organic material
B. Synthetic material
C. Petroleum product
D. Coal
Answer : C

30. Pick up the synthetic resin from the following:
A. Urea resin
B. Phenolic resin
C. Resorcinol resin
D. All of these
Answer : D

31. The most commonly used retarder in cement is
A. Gypsum
B. Calcium chloride
C. Calcium carbonate
D. None of the above
Answer : A

32. Pozzolana (or surkhi) is used in lime
A. To impart hydraulicity
B. To prevent shrinkage
C. To decrease the cost of construction
D. To decrease the setting time
Answer : A

33. Percentage content of silica in window glass, is
A. 40 to 45
B. 50 to 55
C. 60 to 65
D. 70 to 75
Answer : D

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

35. A pug mill is used for
A. Softening brick earth
B. Moulding brick earth
C. Tempering brick earth
D. Providing brick earth
Answer : C

36. Dolomite is a lime stone which contains carbonate of magnesia upto
A. 15 %
B. 20 %
C. 25 %
D. 45 %
Answer : D

37. The process of mixing clay, water and other ingredients to make brick is known as
A. Kneading
B. Moulding
C. Pugging
D. Drying
Answer : A

38. 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

39. Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?
A. Lime stone and alumina
B. Silica and alkalies
C. Alumina and iron
D. Alkalies and magnesium
Answer : B

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

41. The foliated structure is very common in
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. None of these
Answer : C

42. The internal size of mould used in brick preparation is
A. Equal to the size of a fully burnt brick
B. Smaller than the size of a fully burnt brick
C. Greater than the size of a fully burnt brick
D. None of the above
Answer : C

43. With increase in moisture content, the bulking of sand
A. Increases
B. Decreases
C. First increases to a certain maximum value and then decreases
D. First decreases to a certain minimum value and then increases
Answer : C

44. Bitumen felt
A. Is used as water proofing material
B. Is used as damp proofing material
C. Is made from bitumen and hessian fibres
D. All the above
Answer : D

45. 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

46. The melting point of silica is:
A. 1570°C
B. 1630°C
C. 1730°C
D. 1850°C
Answer : C

47. Pick up the correct statement from the following:
A. Rusting is caused due to combined action of air, moisture and carbon dioxide
B. During rusting, first ferrous bicarbonates are formed
C. On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
D. All the above
Answer : D

48. 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

49. 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

50. Lime mortar is generally made with
A. Quick lime
B. Fat lime
C. Hydraulic lime
D. Plain lime
Answer : C