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Civil Engineering MCQS -Building Materials Section 4
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1. Mastic asphalt is normally used for
sound insulation
water proofing
fire proofing
none to these.
2. Lime stone is not a
sedimentary rock
stratified rock
aqueous rock
metamorphic rock.
3. The size of modular bricks, is
10 x 10 x 9 cm
19 x 9 x 9 cm
22.5 x 10 x 8.5 cm
22.5 x 8.0 x 9 cm.
4. A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called
slate
plank
board
strip.
5. Pig iron is manufactured from the ores by
dressing
calcination and roasting
smelting
all the above.
6. Quick lime
generates heat when added to water
reacts with carbon dioxide
may be used for white-washing
all the above.
7. Age of a tree may be ascertained by
radius of its stem
radius of its stem
number of branches
number of annual rings.
8. The portion of a brick cut to form angles other than right angles in plan, is known as
queen closer
king closer
closer
squint brick.
9. Pick up the correct statement from the following:
Slaked lime contains calcium hydroxide
Quick lime contains calcium oxide
Slaked lime may be obtained from quick lime
All the above.
10. Plywood is obtained by gluing wooden sheets at
100 to 150 N/cm2
100 to 130°C
both (a) and (b)
Neither (a) nor (b).
11. The low voltage porcelain is mainly used for
switch block
insulating tubes
lamp sockets
All of these.
12. Putty is
made with finely powdered chalk and linseed oil
used for fixing glass panes
softened by a solution of pearl ash and quick-lime soaked in water
all of these.
13. The initial setting time of hydraulic lime, is
30 minutes
60 minutes
90 minutes
120 minutes
14. PVC stands for
plastic very compact
polythene vinyl chloride
polythene vinyl carbon
polythene vanadium carbide.
15. Generally wooden moulds are made from
ply wood
shisham wood
deodar wood
teak wood
16. Cement paints usually
contain hydrated lime
contain 5% to 10% colour pigments
are prepared with white cement
contain 5% sodium chloride
17. The cement becomes unsound by the presence of excess
sulphur
magnesia
lime
All of these.
18. The kiln which may work throughout the year, is
Clamp
Bull's kiln
Hoffman's kiln
none of these.
19. The minimum compressive strength of 1st class bricks should be
75 kg/cm2
90 kg/cm2
100 kg/cm2
120 kg/cm2
20. A volatile substance added to a paint to make its application easy and smooth, is known as
base
solvent
vehicle
none to these.
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