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Hassan
1.To retard the initial setting time of cement, the compound responsible, is
A. Tricalcium silicate
B. Gypsum
C. Di-calcium silicate
D. Tricalcium silicate
2.Stones used for rubble masonry must be
A. soft
B. hard
C. light
D. soft
3.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. proportioning of aggregates
4.Dolomite is a lime stone which contains carbonate of magnesia upto
A. 15%
B. 20%
C. 25%
D. 15%
5.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. one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
6.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. closer
7.Seasoning of timber is done for
A. increasing moisture content
B. decreasing moisture content
C. increasing strength of timber
D. increasing moisture content
8.Bitumen felt is used for
A. water proofing
B. damp proofing
C. both (a) and (b)
D. water proofing
9.According to ISI, bitumen is classified into
A. 2 grades
B. 4 grades
C. 6 grades
D. 2 grades
10.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. is made from hydraulic lime
11.The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
A. 20
B. 15
C. 10
D. 20
12.For a 50 kg cement bag water required, is
A. 16.5 litres
B. 18.5 litres
C. 20.5 litres
D. 16.5 litres
13.The presence of sand in brick earth prevents:
A. cracking of bricks
B. shrinkage of bricks
C. warping of bricks
D. cracking of bricks
14.The property by virtue of which lime sets under water, is known as
A. slacking
B. setting
C. hydraulicity
D. slacking
15.Percentage content of silica in window glass, is
A. 40 to 45
B. 50 to 55
C. 60 to 65
D. 40 to 45
16.The coefficient of hardness of stones used in road work should be greater than
A. 10
B. 12
C. 15
D. 10
17.Pick up the correct statement from the following:
A. Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
B. Cupola furnace is used for the manufacture of cast iron
C. Red short iron is of no value for welding purpose
D. Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
18.The steel used for the manufacture of rails, is
A. Bessemer steel
B. mild steel
C. cast steel
D. Bessemer steel
19.Slump test for concrete is carried out, to determine
A. strength
B. durability
C. workability
D. strength
20.Basalt is
A. sedimentary rock
B. metamorphic rock
C. extrusive igneous rock
D. sedimentary rock
21.The frog of a brick is normally made on its
A. top face
B. bottom face
C. longer face
D. top face
22.The most important constituent of an oil paint, is
A. thinner
B. vehicle
C. pigment
D. thinner
23.Granite mainly composed of quartz and felsper particles, is obtained from
A. sedimentary rocks
B. metamorphic rocks
C. igneous rocks
D. sedimentary rocks
24.Bullet proof glass is made of thick glass sheet sandwiched by a layer of
A. steel
B. stainless steel
C. high test plastic
D. steel
25.Pig iron obtained from the furnance which is properly provided with fuel at a very high temperature, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Bessemer pig
26.Refractory bricks are
A. neutral refractory bricks
B. acid refractory bricks
C. basic refractory bricks
D. neutral refractory bricks
27.Porcelain is used as :
A. sanitary wares
B. electric insulators
C. storage vessels
D. sanitary wares
28.Durability of building stone is affected by its
A. chemical composition
B. texture
C. resistance to atmosphere
D. chemical composition
29.Magnese steels
A. are non-magnetic
B. possess high electrical resistance
C. possess low coefficient of expansion
D. are non-magnetic
30.Pick up the metal refractory from the following:
A. Molyblendum
B. Tungsten
C. Zicronium
D. Molyblendum
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