The plastics made from cellulose resin
Are as clear as glass
Are tough and strong
Possess excellent electrical properties
All the above
Correct Answer :
D. All the above
Related Questions
The operation of removal of impurities or clay adhering to iron ores, is known as
Dressing
Calcination
Roasting
Smelting
The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
Less than 1
Equal to 1
Greater than 1
Less than 1 in beams but greater than 1 in channels
Bitumen may be dissolved in
Carbondioxide
Water
Sodium chloride
Carbon disulphide
Softer variety of steel may be obtained by
Cementation process
Crucible process
Bessemer process
Open hearth process
Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. 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
The softest rock is
Marble
Diamond
Talc
Quartz
Pick up the metal refractory from the following:
Molybdenum
Tungsten
Zirconium
All of these
Expansion Joints in masonry walls are provided in wall lengths usater than
10 m
20 m
30 m
40 m
Pick up the correct statement from the following:
The plywoods do not split or crack due to changes in atmosphere
The commercial plywoods are available upto 150 cm wide and upto 300 cm long
The plywoods possess uniform tensile strength in all directions
All the above
Pick up the correct statement from the following:
The percentage of absorption for firebricks varies from 5 to 10
The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
All the above
The minimum compressive strength of 2nd class bricks should be
75 kg/cm2
90 kg/cm2
100 kg/cm2
120 kg/cm2
Plaster of Paris is obtained by calcining
Bauxite
Gypsum
Lime stone
None of these
A volatile substance added to a paint to make its application easy and smooth, is known as
Base
Solvent
Vehicle
None to these
Pick up the plutonic rock from the following:
Granite
Dolerite
Basalt
All the above
Fibre glass
Retains heat-longer
Has a higher strength to weight ratio
Is shock proof and fire retardant
All the above
Varnish is a transparent or semi-transparent solution of resinous substances in
Alcohol
Linseed
Turpentine
All the above
Duco paints are
Plastic paints
Cellulose paints
Emulsion paints
Oil paints
The most important constituent of varnish, is
Drier
Solvent
Resin
All the above
The size of mould for bricks, is generally kept
A little large to specified size
A little small to specified size
Equal to specified size
10% larger than specified size
Fibre boards can be
Distempered
Painted
Painted and distempered
Used for furniture
Which of the following is the purest form of iron?
Cast iron
Wrought iron
Mild steel
High carbon steel
Bitumen felt is used for
Water proofing
Damp proofing
Both (A) and (B)
Neither (A) nor (B)
Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
The type of steel used for precision levelling staff, is
Titanium steel
Carbon steel
Invar
Stainless steel
Which one of the following is acid resistant asbestos?
Actinolite asbestos
Amosite asbestos
Anthophylite asbestos
All the above
Lime mortar is generally made with
Quick lime
Fat lime
Hydraulic lime
Plain lime
Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
5 kg/mm2
9 kg/mm2
13 kg/mm2
15 kg/mm2
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
The rocks formed by gradual deposition, are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Slacking of lime is affected by
Keeping it exposed to air
Immersing the lime in water
Crushing the lime lumps
None of these