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Civil Engineering MCQS -Building Materials Section 3
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1. The commonly used drying oil for oil paints, is
accetate of lead.
olive oil
linseed oil
kerosine oil
2. Initial setting of cement is caused due to
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite.
3. The foliated structure is very common in
sedimentary rocks
igneous rocks
metamorphic rocks
none of these.
4. Turpentine oil is used in paints as
thinner
vehicle
base
drier.
5. The hardest rock is
marble
diamond
talc
quartz.
6. The silica is used for preparing
silica bricks
coke oven
lining for glass furnaces
all of these.
7. Wrought iron is manufactured from pig iron by
refining
puddling
shingling
all the above.
8. Pick up the correct statement from the following:
The phenol is carbolic acid
he phenol is either extracted from coal-tar or prepared from benzene
Phenol reacts with formaldehyde, to form phenol formaldehyde resin
all the above.
9. Fibre boards can be
distempered
painted
painted and distempered
used for furniture.
10. Pick up the correct statement from the following:
Catalysts are added to assist and accelerate the hardening of resin,
The fillers are inert materials and they impart strength and hardness
Fibrous fillers increase thermal resistance
All the above.
11. Portland pozzolana cement possesses
higher resistance to chemical attack
lower heat of hydration
lower shrinkage on drying
all the above.
12. Iron ore may contain
carbon
silicon
sulphur
all the above.
13. Wrought iron is used for
structural works in beams
small sized water pipes
columns and struts
none to these.
14. The timber having maximum resistance against white ants, is obtained from
chir
shisham
sal
teak
15. Knots in timber are
defects caused by crushing fibres
splits radiating from the centre
speckled strains
signs of branches cut off.
16. Pick up the correct statement from the following:
Solder material is an alloy which melts at a temperature above 400°C
Brazing is done at temperature above 600°C to 1100°C
Brazing joint is stronger than the solder joint
all the above.
17. Lime concrete is generally used for
wall foundations
flooring at ground level
both (a) and (b)
neither (a) nor (b).
18. Bituminous fells are used for
covering A.C. sheets
covering sloping roofs
D.P.C.
none to these.
19. The minimum compressive strength of Ilnd class bricks should be
75 kg/cm2
100 kg/cm2
120 kg/cm2
150 kg/cm2
20. Stuco paints are suitable for
stone masonry
brick walls
both (a) and (b)
neither (a) nor (b).
21. Pick up the correct statement from the following:
Corrugated sheet iron is made by passing plain sheets between grooved rollers
Strength and stiffness of corrugated sheets are considerably increased
Corrugated sheets are generally gal-venised to protect iron from corrosion by rust
all the above.
22. Quick setting cement is produced by adding
less amount of gypsum in very fine powdered form
more amount of gypsum in very fine powdered form
aluminium sulphate in very fine powdered form
pozzolana in very fine powdered form
23. Duco is one of the patent forms of
emulsion paints
plastic paints
bituminous paints
cellulose paints.
24. Pick up the correct statement from the
The substance which consists of one primary chemical, is known as monomer
The polymer consists of thousands of monomers joined together
The polymer molecule is called macro-molecule
All the above.
25. Bulking of sand is caused due to
surface moisture
air voids
viscosity
clay contents
26. The normal curing period for lime mortar, is:
one day
3 days
7 days
10 days
27. The type of steel used for precision levelling staff, is
Titanium steel
Carbon steel
Invar
Stainless steel.
28. During pudding
molten metal is kept clear of the fuel
molten metal is kept clear of the fuel
silicon forms a slag
all the above.
29. German silver is an alloy of
zinc, lead and nickel
silver, gold and lead
copper, nickel and zinc
copper, brass and zinc
30. Pick up the incorrect statement from the following:
Plastics are chemical resistant
Plastics are durable
Plastics are ductile
Plastics are excellent electric insulators.
31. Pick up correct statement from the following:
Fibre boards are used for thermal and acoustic control
Fibre boards are used for light weight standing members
Fibre boards are obtained by impregnating a resin product on fibres
all the above.
32. Quartzite, a metamorphic stone is
hard
brittle
crystalline
All the above.
33. Pick up the correct statement from the following:
Plastics have generally low melting point
The coefficient of thermal expansion of plastics is about three times than that of steel
The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
All the above.
34. Dextrin is
animal glue
starch glue
albumin glue
rubber based adhesive
35. Dextrin is
animal glue
starch glue
albumin glue
rubber based adhesive
36. For the manufacture of stainless steel, steel is mixed with
chromium
nickel
tungsten
none of these.
37. Stones used for ornamental work must be
soft
hard
light
heavy
38. Pick up the correct statement from the following:
Quick lime is obtained by burning pure lime stone:
Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
Poor lime is obtained by burning lime stone containing impurities more than 5%
All the above.
39. The presence of original rounded surface on the manufactured piece of timber, is called
Wane
Torn grain
Diagonal grain
Chipmark.
40. Smith's test of stones is performed to find out
the presence of soluble matter of stone
the compressive strength of the stone
the hardness of the stone
the toughness of the stone.
41. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
radial shakes
heart shakes
wind cracks
twisted fibres
42. The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called
Cementation process
crucible process
Bessemer process
Open hearth process.
43. In paints, the pigment is responsible for
durability
colour
smoothness
None of these.
44. The operation of removal of impurities or clay adhering to iron ores, is known as
dressing
dressing
roasting
smelting.
45. If water required for 1 bag of cement is 30 litres, the water cement ratio is :
0.4
0.5
0.6
None of these.
46. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
quick setting cement
rapid hardening cement
white cement
low heat Portland cement.
47. Dry rot
cracks the timber
reduces the strength of timber
reduces the timber to powder
shrinks the timber
48. Which one of the following polymers is obtained from condensation polymerization ?
phenol formaldehyde
carbamide
melamine-formaldehyde
all of these.
49. The weight of 1 m3 of brick earth, is about
1200 kg
1500 kg
1800 kg
2000 kg
50. Pozzolana (or surkhi) is used in lime
to impart hydraulicity
to prevent shrinkage
to decrease the cost of construction
to decrease the setting time.
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