Refractory bricks are used for
Retaining walls
Columns
Piers
Combustion chambers
Correct Answer :
D. Combustion chambers
Related Questions
Bitumen felt is used for
Water proofing
Damp proofing
Both (A) and (B)
Neither (A) nor (B)
Fibre boards can be
Distempered
Painted
Painted and distempered
Used for furniture
Percentage of silica in a good brick earth lies between
5 to 10 %
20 to 30 %
50 to 60 %
70 to 80 %
Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product
Quick lime is
Calcium carbonate
Calcium oxide
Calcium hydroxide
None of the above
Acrylic is the name of
Cellulose resin
Alkyd resin
Methyl methacrylate
Cumarone-indene
The most durable varnish is
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
The harmonious mixing of the clay ingredients, is known as
Weathering
Blending
Tempering
None of these
The type of bond provided in brick masonry for carrying heavy loads is
Single Flemish bond
Double Flemish bond
English bond
Zigzag bond
Rapid hardening cement attains early strength due to
Larger proportion of lime grounded finer than normal cement
Lesser proportion of lime grounded coarser than normal cement
Lesser proportion of lime grounded finer than normal cement
Excess percentage of gypsum
The proportions of lime and sand in the mortar normally used in brick construction are
1 : 2
1 : 4
1 : 6
1 : 8
The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
Radial shakes
Heart shakes
Wind cracks
Twisted fibres
Pick up the hypabyssal rock from the following:
Granite
Dolerite
Basalt
All the above
Spalling hammer is used for
Driving wooden headed chisels
Rough dressing of stones
Carving of stones
Breaking small projection of stones
Pick up the metal refractory from the following:
Molybdenum
Tungsten
Zirconium
All of these
Expansion Joints in masonry walls are provided in wall lengths usater than
10 m
20 m
30 m
40 m
The material generally not used as extender in paints, is
Powdered silica
Gypsum
Talc
Zinc white
Durability of building stone is affected by its
Chemical composition
Texture
Resistance to atmosphere
All the above
Pick up the correct statement from the following:
Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
Cracked paints may be cured by removing paint and giving a fresh coat of paint
Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
All the above
If the ore impurities is
Clay, lime stone is used as flux
Lime stone, clay is used as flux
Quartz, lime stone and argillaceous iron ores are used as flux
All the above
Good quality sand is never obtained from
River
Lake
Sea
Gravel powder
The sequence of refractory materials according to increasing melting points is:
Dolomite, Magnesia, Bauxite, Chromites
Bauxite, Chromites, Dolomite, Magnesia
Magnesia, Bauxite, Dolomite, Chromites
None of these
Cement paints usually
Contain hydrated lime
Contain 5% to 10% colour pigments
Contain 5% sodium chloride
All the above
For a 50 kg cement bag water required, is
16.5 litres
18.5 litres
20.5 litres
22.5 litres
The commonly used drying oil for oil paints, is
Olive oil
Linseed oil
Kerosene oil
Acetate of lead
A volatile substance added to a paint to make its application easy and smooth, is known as
Base
Solvent
Vehicle
None to these
The commonly used colour pigment in paints, is
Ambers
Carbon black
Iron oxide
All the above
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
In arches, stratified stones are placed so that their planes are
Parallel
Perpendicular
Radial
None of these
Wrought iron is manufactured from pig iron by
Refining
Pudding
Shingling
All the above