The fire clay contains pure
Lime
Oxide of iron
Hydrated aluminium silicate
Magnesium
Correct Answer :
C. Hydrated aluminium silicate
Related Questions
The percentage of water for normal consistency, is
5% to 15%
10% to 25%
15% to 25%
20% to 30%
Which of the following gradients exerts maximum influence on properties of steel?
Iron
Carbon
Manganese
Sulphur
The silica is used for preparing
Silica bricks
Coke oven
Lining for glass furnaces
All of these
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
Mild steel is used for
Structural works in beams, joints and girders
Small sized water pipes
Columns and struts
None of these
Cement is said to be of good quality if
Its colour is not greenish grey
One feels cool by thrusting one's hand in the cement bag
A handful of cement thrown into a bucket of water does not float
None of these
A heavy stone is suitable for
Arches
Rubble masonry
Roads
Retaining walls
A good brick earth should contain:
About 20% to 30% of alumina
About 50% to 60% of silica
Not more than 5% of lime
All the above
The most valuable timber may be obtained from
Chir
Shishum
Sal
Teak
The softest rock is
Marble
Diamond
Talc
Quartz
The pigment used in paints for corrosive resistance, is
White lead
Ferrous oxide
Zinc white
Red lead
Bitumen paints offer
Pleasing surface
Hard surface
Smooth surface
Protective surface
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
Jumper is a tool used for
Testing of stones
Quarrying of stones
Dressing of stones
None of the above
Chemically, marble is known as
Metamorphic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Pick up the correct statement from the following:
Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite
Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite
Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic
All the above
The process of mixing clay, water and other ingredients to make brick is known as
Kneading
Moulding
Pugging
Drying
Pick up the correct statement from the following:
The distinct plane of division along which a stone can easily be split, is called natural bed of stone
The natural bed of sedimentary rocks is along the planes of stratification
The natural bed of igneous rocks is not defined
All the above
The rocks which are formed due to pouring of magma at the earth's surface are called
Plutonic rocks
Hypabyssal rocks
Volcanic rocks
Igneous rocks
Dry rot
Cracks the timber
Reduces the strength of timber
Reduces the timber to powder
Spoils the appearance of timber
The kiln which may work throughout the year, is
Clamp
Bull's kiln
Hoffman's kiln
None of these
A pug mill is used for
Softening brick earth
Moulding brick earth
Tempering brick earth
Providing brick earth
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 timber having maximum resistance against white ants, is obtained from
Chir
Shishum
Sal
Teak
The fire clay contains pure
Lime
Oxide of iron
Hydrated aluminium silicate
Magnesium
Ultimate strength to cement is provided by
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Oil varnish generally consists of
Synthetic resin and spirit
Oil, wax and resin
Resin, oil and turpentine
Spirit, oil and wax
The commonly used lime in white washing, is
White lime
Fat lime
Hydraulic lime
Quick lime
Pick up the correct statement from the following:
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
For thin structures which remain continuously under water, the watercement ratio by weight should be 0.55
All the above
Percentage content of silica in window glass, is
40 to 45
50 to 55
60 to 65
70 to 75