Cast iron is used for
Structural works in beams
Small sized water pipes
Columns and struts
None to these
Correct Answer :
C. Columns and struts
Related Questions
Which one of the following polymers is obtained from condensation polymerization?
Phenol formaldehyde
Carbamide
Melamine-formaldehyde
All of these
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
The low voltage porcelain is mainly used for
Switch block
Insulating tubes
Lamp sockets
All of these
The normal consistency of ordinary Portland cement is about
10 %
20 %
30 %
40 %
Pick up the correct statement from the following:
The low voltage porcelain is prepared by wet process
The high voltage porcelain is prepared by dry process
The low voltage porcelain is prepared by dry process
None of the above
Bitumen emulsion is
A liquid containing bitumen in suspension
A paint
Used as anti-corrosive paint
All the above
Excess of silica in brick earth results in
Cracking and warping of bricks
Loss of cohesion
Enhancing the impermeability of bricks
None of the above
Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
The filler used in plastic bitumen, is
Shale powder
Talc powder
Asbestos powder
Plastic powder
Seasoning of timber is done for
Increasing moisture content
Decreasing moisture content
Increasing strength of timber
None to these
Plaster of Paris is obtained by calcining
Bauxite
Gypsum
Lime stone
None of these
The most fire resistant paints are:
Enamel paints
Aluminium paints
Asbestos paints
Cement paints
Vanadium steel is generally used for
Railway switches and crossing
Bearing balls
Magnets
Axles and springs
For obtaining vinyl chloride acetate, the method used, is
Addition polymerization
Condensation polymerization
Co-polymerization
None of these
The main function of alumina in brick earth is
To impart plasticity
To make the brick durable
To prevent shrinkage
To make the brick impermeable
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
The initial setting time of hydraulic lime, is
30 minutes
60 minutes
90 minutes
120 minutes
The most important constituent of an oil paint, is
Thinner
Vehicle
Pigment
All the above
The main constituent of fly-ash, is
Aluminium oxide
Silica
Ferrous oxide
All of these
Pick up the plutonic rock from the following:
Granite
Dolerite
Basalt
All the above
Gneiss is obtained from
Igneous rocks
Metamorphic rocks
Sedimentary rocks
Sedimentary metamorphic rocks
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
A heavy stone is suitable for
Arches
Rubble masonry
Roads
Retaining walls
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
Good quality cement contains higher percentage of
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Which of the following has more fire resisting characteristics?
Marble
Lime stone
Compact sand stone
Granite
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
Granite is not suitable for ordinary building purpose because
It cannot be polished
It is not a fire proof material
It is costly
It has less crushing strength
Good quality stones must
Be durable
Be free from clay
Resist action of acids
All the above
Which of the following cements is suitable for use in massive concrete structures such as large dams?
Ordinary Portland cement
Low heat cement
Rapid hardening cement
Sulphate resisting cement