500 Best Building Materials MCQ
Q321). Dolomite is a lime stone which contains carbonate of magnesia upto
a).0.15
b).0.2
c).0.25
d).0.45
Correct Answer:
0.45
Explanation:
Q322). Priming consists of
a).one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
b).8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
c).one part of white lead, 8 parts of chalk and one part of linseed oil
d).none to these.
Correct Answer:
one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
Explanation:
Q323). The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
a).closer
b).queen closer
c).king closer
d).prince closer
Correct Answer:
queen closer
Explanation:
Q324). Seasoning of timber is done for
a).increasing moisture content
b).decreasing moisture content
c).increasing strength of timber
d).none to these.
Correct Answer:
decreasing moisture content
Explanation:
Q325). Bitumen felt is used for
a).water proofing
b).damp proofing
c).both (a) and (b)
d).neither (a) nor (b).
Correct Answer:
both (a) and (b)
Explanation:
Q326). According to ISI, bitumen is classified into
a).2 grades
b).4 grades
c).6 grades
d).10 grades.
Correct Answer:
10 grades.
Explanation:
Q327). Lime putty
a).is made from hydraulic lime
b).is made by adding lime to water
c).can be used only upto three days
d).All of the above.
Correct Answer:
All of the above.
Explanation:
Q328). The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
a).20
b).15
c).10
d).0
Correct Answer:
0
Explanation: