Pick up the correct statement from the following:
In stone arches, the stones are placed with their natural beds radial
In cornices, the stones are placed with their natural beds as vertical
In stone walls, the stones are placed with their natural beds as horizontal
All the above
Correct Answer :
D. All the above
Related Questions
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
The constituent of cement which is responsible for all the undesirable properties of cement is
Di-calcium silicate
Tri-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Manganese steels
Are non-magnetic
Possess high electrical resistance
Possess low coefficient of expansion
All the above
The slump recommended for mass concrete is about
25 mm to 50 mm
50 mm to 100 mm
100 mm to 125 mm
125 mm to 150 mm
A badly mixed cement concrete results in
Segregation
Bleeding
Honey combing
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
Refractory bricks are used for
Retaining walls
Columns
Piers
Combustion chambers
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
The rocks having alumina or clay as their major constituents are known as
Siliceous rocks
Argillaceous rocks
Calcareous rocks
Sedimentary rocks
The material generally not used as extender in paints, is
Powdered silica
Gypsum
Talc
Zinc white
The softest rock is
Marble
Diamond
Talc
Quartz
A well seasoned timber may contain moisture up to
4 to 6 %
6 to 8 %
8 to 10 %
10 to 12 %
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
Trowel
Square
Bolster
Scutch
Quick lime
Generates heat when added to water
Reacts with carbon dioxide
May be used for white-washing
All the above
A mortar joint in masonry which is normal to the face of wall is known as
Bed joint
Wall joint
Cross joint
Bonded joint
The main ingredient of a good quality brick earth, is
Magnesia
Lime
Silica
Alumina
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
1 : 2
1 : 3
1 : 4
1 : 6
For high grade instruments the steel preferred to, is
Cast steel
Bessemer steel
Mild steel
Whitworth compressed steel
The coefficient of hardness of stones used in road work should be greater than
10
12
15
17
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
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
Cementation process
Crucible process
Bessemer process
Open hearth process
Soundness of cement is tested by
Vicat's apparatus
Le-chatelier apparatus
Compressive strength testing apparatus
None of these
Ultimate strength to cement is provided by
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
The base material for distemper, is
Chalk
Lime
Lime putty
Cement wash
Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below:
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Addition of pozzolana to ordinary Portland cement increases
Bleeding
Shrinkage
Permeability
Heat of hydration
Chlorite, a green colour mineral is mainly derived from the decomposition of
Augite
Biotite
Hornblende
All of these
The minimum compressive strength of 2nd class bricks should be
75 kg/cm2
90 kg/cm2
100 kg/cm2
120 kg/cm2
Commonly used thinner in
Lacquer paints, is alcohol
Cellulose paints is ethyl acetate
Oil paints, is naphtha
All the above
Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product