500 Best Building Materials MCQ

Q161). Putty is

a).made with finely powdered chalk and linseed oil
b).used for fixing glass panes
c).softened by a solution of pearl ash and quick-lime soaked in water
d).all the above.

Correct Answer:
all the above.
Explanation:



Q162). The initial setting time of hydraulic lime, is

a).30 minutes
b).60 minutes
c).90 minutes
d).120 minutes

Correct Answer:
120 minutes
Explanation:



Q163). PVC stands for

a).plastic very compact
b).polythene vinyl chloride
c).polythene vinyl carbon
d).polythene vanadium carbide.

Correct Answer:
polythene vinyl chloride
Explanation:



Q164). Generally wooden moulds are made from

a).ply wood
b).shisham wood
c).deodar wood
d).teak wood

Correct Answer:
shisham wood
Explanation:



Q165). Cement paints usually

a).contain hydrated lime
b).contain 5% to 10% colour pigments
c).are prepared with white cement
d).all the above.

Correct Answer:
all the above.
Explanation:



Q166). The cement becomes unsound by the presence of excess

a).sulphur
b).magnesia
c).lime
d).All of these.

Correct Answer:
All of these.
Explanation:



Q167). The kiln which may work throughout the year, is

a).Clamp
b).Bull’s kiln
c).Hoffman’s kiln
d).none of these.

Correct Answer:
Hoffman’s kiln
Explanation:



Q168). The minimum compressive strength of 1st class bricks should be

a).75 kg/cm
b).90 kg/cm
c).100 kg/cm
d).120 kg/cm

Correct Answer:
100 kg/cm
Explanation:



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