In arches, stratified stones are placed so that their planes are
Parallel
Perpendicular
Radial
None of these
Correct Answer :
C. Radial
Related Questions
Seasoning of timber is done
To make it water proof
To paint its surface
To increase its temperature
To remove water
The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
1
2
3
4
Bitumen paints offer
Pleasing surface
Hard surface
Smooth surface
Protective surface
Pick up the correct statement from the following:
Solder material is an alloy which melts at a temperature above 400°C
Brazing is done at temperature above 600°C to 1100°C
Brazing joint is stronger than the solder joint
All the above
The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to
Grey cast iron
White cast iron
Mottled cast iron
Toughed cast iron
The base material for distemper, is
Chalk
Lime
Lime putty
Cement wash
Minimum of 40% of iron, is available in
Magnetite
Red haematite
Limonite
Black band
A pug mill is used for
Softening brick earth
Moulding brick earth
Tempering brick earth
Providing brick earth
The moisture content in a well seasoned timber is
4 % to 6 %
10 % to 12 %
15 % to 20 %
100 %
Pick up the metal refractory from the following:
Molybdenum
Tungsten
Zirconium
All of these
Pick up the correct statement from the following:
Hornblende mineral is brittle
Muscovite is also known as white mica and potash mica
Biotite is also known as black-mica
All the above
The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called
Cementation process
Crucible process
Bessemer process
Open hearth process
The slenderness ratio for masonry walls should not be more than
10
20
30
40
Stainless steel resists corrosion due to
Carbon
Sulphur
Vanadium
Chromium
Bullet proof glass is made of thick glass sheet sandwiched by a layer of
Steel
Stainless steel
High test plastic
Chromium plate
Lime mortar is generally made with
Quick lime
Fat lime
Hydraulic lime
Plain lime
Stucco paints are suitable for
Stone masonry
Brick walls
Both (A) and (B)
Neither (A) nor (B)
Le-Chatelier's device is used for determining the
Setting time of cement
Soundness of cement
Tensile strength of cement
Compressive strength of cement
Water paint is a
White wash
Colour wash
Whiting
All the above
A rock contains only one mineral. It is called
Homogeneous
Non-homogeneous
Monomineralic
Polymineralic
Pick up the correct statement from the following:
Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
Cupola furnace is used for the manufacture of cast iron
Red short iron is of no value for welding purpose
All the above
Which one of the following is acid resistant asbestos?
Actinolite asbestos
Amosite asbestos
Anthophylite asbestos
All the above
Iron ore may contain
Carbon
Silicon
Phosphorus and manganese
All the above
Galvanising means covering iron with a thin coat of
Tin
Zinc
Glaze
Coal tar
The type of steel used for precision levelling staff, is
Titanium steel
Carbon steel
Invar
Stainless steel
The ultimate tensile strength of structural mild steel is about
160 N/mm²
260 N/mm²
420 N/mm²
520 N/mm²
Pick up the correct statement from the following:
Rusting is caused due to combined action of air, moisture and carbon dioxide
During rusting, first ferrous bicarbonates are formed
On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
All the above
The main constituent which imparts hydraulicity to hydraulic lime is
Calcium oxide
Silica
Clay
Water
For preparing porcelains, the clay should be
Sufficiently pure
Of high degree of tenacity
Of good plasticity
All the above
Quick lime is (i) Slow in setting (ii) Rapid in slacking (iii) Good in strength The correct answer is
Only (i)
Only (ii)
Both (i) and (ii)
Both (ii) and (iii)