Quick lime
Generates heat when added to water
Reacts with carbon dioxide
May be used for white-washing
All the above
Correct Answer :
D. All the above
Related Questions
Three basic raw materials which are needed in large quantities for production of steel are
Iron ore, coal and sulphur
Iron ore, carbon and sulphur
Iron ore, coal and lime stone
Iron ore, carbon and lime stone
The foliated structure is very common in
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Pick up the correct statement from the following:
The free quartz suddenly expands at a temperature lower than 600°C
The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
The sand stone with silicates resist a fire in a better way
All the above
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
The operation of removal of impurities or clay adhering to iron ores, is known as
Dressing
Calcination
Roasting
Smelting
Basalt is
Sedimentary rock
Metamorphic rock
Extrusive igneous rock
Intrusive igneous rock
The timber having maximum resistance against white ants, is obtained from
Chir
Shishum
Sal
Teak
Lacquer paints
Are generally applied on structural steel
Are less durable as compared to enamel paints
Consist of resin and nitro-cellulose
All the above
Which of the following is a mineral?
Basalt
Granite
Quartz
Syenite
Plastics are compounds of carbon with element
Hydrogen
Nitrogen
Oxygen
All of these
Pegmatite is a/an
Intrusive igneous rock
Extrusive igneous rock
Sedimentary rock
Metamorphic rock
Pick up the plutonic rock from the following:
Granite
Dolerite
Basalt
All the above
The harmonious mixing of the clay ingredients, is known as
Weathering
Blending
Tempering
None of these
Which of the following bricks are used for lining of furnaces?
Over-burnt bricks
Under-burnt bricks
Refractory bricks
First class bricks
The vehicle used in case of enamel paints is usually
Linseed oil
Water
Varnish
None of the above
Invar contains
12% of nickel
24% of nickel
30% to nickel
36% of nickel
Quartzite is a
Metamorphic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Minimum required water cement ratio for a workable concrete, is
0.30
0.40
0.50
0.60
Dextrin is
Animal glue
Starch glue
Albumin glue
Rubber based adhesive
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
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
Linseed oil is used in paints as
Thinner
Vehicle
Base
Drier
Advantage of a clamp compared to a kiln for burning bricks is that
It takes less time for burning
It gives more output of first class bricks
It has less initial cost
It is suitable when bricks are required in large numbers
Plywood has the advantage of
Greater tensile strength in longer direction
Greater tensile strength in shorter direction
Same tensile strength in all directions
None of the above
The sequence of refractory materials according to increasing melting points is:
Dolomite, Magnesia, Bauxite, Chromites
Bauxite, Chromites, Dolomite, Magnesia
Magnesia, Bauxite, Dolomite, Chromites
None of these
Dry rot
Cracks the timber
Reduces the strength of timber
Reduces the timber to powder
Spoils the appearance of timber
Which of the following should be used for hearting of thicker walls?
Headers
Stretchers
Brick bats
Queen closer
The most important constituent of varnish, is
Drier
Solvent
Resin
All the above
Veneering means
Carving out designs on timber planks
Chemically treating timber planks
Thick layer of superior wood glued to inferior wood
Thin layer of superior wood glued to inferior wood
The most commonly used synthetic abrasive is
Aluminium carbide
Boric acid
Silicon
All of these