Polymerization helps to improve the property of
Strength
Rigidity
Elasticity
All of these
Correct Answer :
D. All of these
Related Questions
Soundness of cement is tested by
Vicat's apparatus
Le-chatelier apparatus
Compressive strength testing apparatus
None of these
In a rock calcium carbonate predominates. State whether it is:
Siliceous rock
Argillaceous rock
Calcareous rock
None of these
During smelting process, the combination of fuel in the furnace
Forms carbon dioxide
Carbon dioxide with carbon forms carbon mono-oxide
Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
All the above
The commonly used base for iron and steel work, is
Red lead
Zinc white
White lead
Titanium white
Generally wooden moulds are made from
Ply wood
Shishum wood
Deodar wood
Teak wood
For high grade instruments the steel preferred to, is
Cast steel
Bessemer steel
Mild steel
Whitworth compressed steel
Rocks formed due to alteration of original structure due to heat and excessive pressure are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
The PVC doors and windows are preferred as they are
Rust proof
Rot proof
Water proof
All of these
Wrought iron contains carbon about
1.5% to 5.5%
0.5% to 1.75%
0.1% to 0.25%
None to these
Pick up the polymineralic rock from the following:
Quartz sand
Pure gypsum
Magnesite
Granite
With increase in moisture content, the bulking of sand
Increases
Decreases
First increases to a certain maximum value and then decreases
First decreases to a certain minimum value and then increases
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
Soundness test of cement determines
Quality of free lime
Ultimate strength
Durability
Initial setting
The main function of alumina in brick earth is
To impart plasticity
To make the brick durable
To prevent shrinkage
To make the brick impermeable
Stones used for rubble masonry must be
Soft
Hard
Light
Heavy
Bitumen felt
Is used as water proofing material
Is used as damp proofing material
Is made from bitumen and hessian fibres
All the above
Portland pozzolana cement possesses
Higher resistance to chemical attack
Lower heat of hydration
Lower shrinkage on drying
All the above
Softer variety of steel may be obtained by
Cementation process
Crucible process
Bessemer process
Open hearth process
For one cubic metre of brick masonry, number of bricks required, is
400
425
450
500
Pick up the correct statement from the following:
Steel produced by open hearth process is milder than that obtained by the Bessemer process
Engineers prefer open hearth steel for structural purpose as it is more homogenous
Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel
All the above
Which of the following sedimentary rocks changes into quartzite by metamorphic action?
Sand stone
Lime stone
Shale
Gypsum
For the manufacture of stainless steel, steel is mixed with
Chromium
Nickel
Tungsten
None of these
Clay and silt content in a good brick earth must be at least
50 %
40 %
30 %
25 %
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
French polish is
Oil paint
Distemper
Spirit varnish
None to these
Acrylic is the name of
Cellulose resin
Alkyd resin
Methyl methacrylate
Cumarone-indene
Mastic asphalt is
Water proof
Fire proof
Elastic
All the above
The standard size of masonry bricks, is
18 cm × 8 cm × 8 cm
19 cm × 9 cm × 9 cm
20 cm × 10 cm × 10 cm
21 cm × 11 cm × 11 cm
Duco is one of the patent forms of
Emulsion paints
Plastic paints
Bituminous paints
Cellulose paints
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber