Asbestos is
Corrugated sheet used for roofing
An incombustible fire proof material
An organic substance
All the above
Correct Answer :
D. All the above
Related Questions
Turpentine oil is used in paints as
Thinner
Vehicle
Base
Drier
The compound of Portland cement which reacts immediately with water and also sets first is
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
Right angles
45°
60°
Parallel
The method of addition polymerization is used for obtaining:
Polystyrene
Polypropylene
Polyvinylchloride
All of these
Pick up the correct statement from the following: Method of sawing timber
Tangentially to annual rings, is known as tangential method
In four quarters such that each board cuts annual rings at angles not less than 45°, is known as quarter sawing method
Cut out of quarter logs, parallel to the medullary rays and perpendicular to annual rings, is known as radial sawing
All the above
Stones used for rubble masonry must be
Soft
Hard
Light
Heavy
The term frog means
An apparatus to lift the stone
A depression on a face of brick
Vertical joint in a brick work
Soaking brick in water
In a mortar, the binding material is
Cement
Sand
Surkhi
Cinder
Cast iron
Is obtained by purifying pig iron
Is manufactured in required shapes
May contain 2 to 5 per cent of carbon with other impurities
All the above
Pig iron is manufactured from the ores by
Dressing
Calcination and roasting
Smelting
All the above
Mastic asphalt is
Acid resisting material
Non-corrosive material
Corrosive material
Heating-resisting material
Pozzolana (or surkhi) is used in lime
To impart hydraulicity
To prevent shrinkage
To decrease the cost of construction
To decrease the setting time
Pick up the correct statement from the following:
The baked earth is called terra-cotta
The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware
The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware
All the above
Bullet proof glass is made of thick glass sheet sandwiched by a layer of
Steel
Stainless steel
High test plastic
Chromium plate
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
Pick up the correct statement from the following:
The free quartz suddenly expands at a temperature lower than 600°C
The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
The sand stone with silicates resist a fire in a better way
All the above
The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
The monsoon
The winter
The summer
None of these
Which of the following stresses is used for identifying the quality of structural steel?
Ultimate stress
Yield stress
Proof stress
None of the above
Smith's test of stones is performed to find out
The presence of soluble matter of stone
The compressive strength of the stone
The hardness of the stone
The toughness of the stone
The lime which contains high percentage of calcium oxide, is generally called
Fat lime
Rich lime
White lime
None of these
The pressure acting on the stones in stone masonry construction should be
Along the direction of bedding planes
At 45° to the direction of bedding planes
At 60° to the direction of bedding planes
Perpendicular to the direction of bedding planes
The moisture content in a well seasoned timber is
4 % to 6 %
10 % to 12 %
15 % to 20 %
100 %
A ferrous metal is
Cast iron
Wrought iron
Steel
All the above
The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick
20 %
15 %
10 %
None of these
A good quality stone absorbs water less than
5 %
10 %
15 %
25 %
A bull nose brick is not used for
Rounding off sharp corners
Pillars
Decoration purpose
Arches
For obtaining vinyl chloride acetate, the method used, is
Addition polymerization
Condensation polymerization
Co-polymerization
None of these
Pick up the correct statement from the following:
The phenol is carbolic acid
The phenol is either extracted from coal-tar or prepared from benzene
Phenol reacts with formaldehyde, to form phenol formaldehyde resin
All the above
Stainless steel contains
18% of chromium and 8% nickel
8% of chromium and 18% of nickel
12% of chromium and 36% of nickel
36% of chromium and 12% of nickel
Blister steel
Is obtained by cementation process
Is full of fissures and cavities
Can be easily welded
All the above