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Quiz 4
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Q.1
Seasoning is
A process of removing sap
Creosoting
Painting with sodium silicate
Coating with tar
Q.2
The variety of pig iron used for the manufacture of steel by Bessemer process, is
Bessemer pig
Grey pig
White forge pig
Mottled pig
Q.3
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber
Q.4
Which of the following ingredients of the brick earth enables the brick to retain its shape?
Alumina
Silica
Iron
Magnesia
Q.5
Strength of cement concrete primarily depends upon
Quality of water
Quantity of aggregate
Quantity of cement
Water-cement ratio
Q.6
The pressure acting on the stones in stone masonry construction should be
Along the direction of bedding planes
Perpendicular to the direction of bedding planes
Q.7
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
Q.8
Which of the following stresses is used for identifying the quality of structural steel?
Ultimate stress
Yield stress
Proof stress
None of the above
Q.9
Sea sand used in structures causes
Dampness
Efflorescence
Disintegration
All of these
Q.10
The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as
Quarrying of stones
Blasting of stones
Seasoning of stones
Dressing of stones
Q.11
Shingle is
Decomposed laterite
Crushed granite
Water bound pebbles
Air weathered rock
Q.12
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
Q.13
In order of increasing percentage of silica, the correct sequence is
Sandy clay, calcareous clay, pure clay
Calcareous clay, pure clay, sandy clay
Pure clay, sandy clay, calcareous clay
None of these
Q.14
The main ingredients of Portland cement are
Lime and silica
Lime and alumina
Silica and alumina
Lime and iron
Q.15
Jumper is a tool used for
Testing of stones
Quarrying of stones
Dressing of stones
None of the above
Q.16
Durability of building stone is affected by its
Chemical composition
Texture
Resistance to atmosphere
All the above
Q.17
The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
Less than 1
Equal to 1
Greater than 1
Less than 1 in beams but greater than 1 in channels
Q.18
Cross cut saw is used for
Cutting soft stones
Cutting hard stones
Cutting large blocks of stones
Dressing stones
Q.19
Wrought iron contains carbon upto
0.25 %
1.0 %
1.5 %
2.0 %
Q.20
Cast steel is manufactured by
Cementation process
Crucible process
Bessemer process
Open hearth process
Q.21
A good quality stone absorbs water less than
5 %
10 %
15 %
25 %
Q.22
Oil varnish generally consists of
Synthetic resin and spirit
Oil, wax and resin
Resin, oil and turpentine
Spirit, oil and wax
Q.23
Plastics are compounds of carbon with element
Hydrogen
Nitrogen
Oxygen
All of these
Q.24
According to ISI, bitumen is classified into
2 grades
4 grades
8 grades
10 grades
Q.25
A stone is rejected if it absorbs water more than
5 %
10 %
15 %
20 %
Q.26
For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
80 : 13 : 7
70 : 20 : 10
60 : 35 : 5
None of these
Q.27
The most commonly used retarder in cement is
Gypsum
Calcium chloride
Calcium carbonate
None of the above
Q.28
The cement becomes unsound by the presence of excess
Sulphur
Magnesia
Lime
All of these
Q.29
Resins are
Not soluble in water
Soluble in spirit
Used in varnishes
Left behind on evaporation of oil
Q.30
Quick lime
Generates heat when added to water
Reacts with carbon dioxide
May be used for white-washing
All the above
Q.31
Quick lime is
Calcium carbonate
Calcium oxide
Calcium hydroxide
None of the above
Q.32
Glazing of clay products, is done
To improve their appearance
To protect them from atmospheric effect
To protect them from corrosive action
All the above
Q.33
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 the above
Q.34
Sapwood consists of
Innermost annular rings around the pith
Portion of timber between heartwood and cambium layer
Thin layers below the bark
Thin fibre which extends from the pith outwards and holds the annular rings together
Q.35
Sand stone is
Sedimentary rock
Metamorphic rock
Igneous rock
Volcanic rock
Q.36
Which of the following gradients exerts maximum influence on properties of steel?
iron
carbon
manganese
sulphur
Q.37
Sewer pipes are made of
Earthen ware
Stone ware
Refractory clay
All the above
Q.38
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
Q.39
Knots in timber are
Defects caused by crushing fibres
Splits radiating from the centre
Speckled strains
Signs of branches cut off
Q.40
Crushing strength of a good building stone should be more than
50 MPa
100 MPa
150 MPa
200 MPa
Q.41
In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
English bond
double flemish bond
zigzag bond
single flemish bond
Q.42
Specific gravity for most of the building stones lies between
1.5 to 2.0
2.0 to 2.5
2.5 to 3.0
3.0 to 3.5
Q.43
For melting one tonne of cast iron
700 m3 air is required
20 kg limestone is required
One quintal coke is required
All the above
Q.44
A volatile substance added to a paint to make its application easy and smooth, is known as
Base
Solvent
Vehicle
None to these
Q.45
Le-Chatelier's device is used for determining the
Setting time of cement
Soundness of cement
Tensile strength of cement
Compressive strength of cement
Q.46
According to IS 399-1963, the weight of the timber is specified at
8% moisture content
10% moisture content
12% moisture content
14% moisture content
Q.47
Spirit varnish generally consists of
Oil, wax and resin
Alcohol, wax and turpentine
Pigment and synthetic resin
Spirit and shellac
Q.48
Quartzite is a
Metamorphic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Q.49
A queen closer is a
Brick laid with its length parallel to the face or direction of wall
Brick laid with its breadth parallel to the face or direction of wall
Brick having the same length and depth as the other bricks but half the breadth
Brick with half the width at one end and full width at the other
Q.50
Plastic
Is an organic substance
Consists of natural or synthetic binders
Finished products are rigid and stable at normal temperature
All the above
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