The rocks having alumina or clay as their major constituents are known as
Siliceous rocks
Argillaceous rocks
Calcareous rocks
Sedimentary rocks
Correct Answer :
B. Argillaceous rocks
Related Questions
The vehicle used in case of enamel paints is usually
Linseed oil
Water
Varnish
None of the above
Minimum of 40% of iron, is available in
Magnetite
Red haematite
Limonite
Black band
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
Pick up the correct statement from the following: Method of sawing timber
Tangentially to annual rings, is known as tangential method
In four quarters such that each board cuts annual rings at angles not less than 45°, is known as quarter sawing method
Cut out of quarter logs, parallel to the medullary rays and perpendicular to annual rings, is known as radial sawing
All the above
For obtaining vinyl chloride acetate, the method used, is
Addition polymerization
Condensation polymerization
Co-polymerization
None of these
The practical limit of moisture content achieved in air drying of timber is
5 %
15 %
25 %
35 %
Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?
Lime stone and alumina
Silica and alkalies
Alumina and iron
Alkalies and magnesium
For melting one tonne of cast iron
700 m3 air is required
20 kg limestone is required
One quintal coke is required
All the above
The material generally not used as extender in paints, is
Powdered silica
Gypsum
Talc
Zinc white
Permanent magnets are made of high carbon steel and
15% of cobalt
20% of cobalt
35% of cobalt
45% of cobalt
The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
Closer
Queen closer
King closer
Prince closer
Pick up the correct statement from the following:
Quick lime is obtained by burning pure lime stone
Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
Poor lime is obtained by burning lime stone containing impurities more than 5%
All the above
Pick up the correct statement from the following:
Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
Cracked paints may be cured by removing paint and giving a fresh coat of paint
Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
All the above
The presence of original rounded surface on the manufactured piece of timber, is called
Wane
Torn grain
Diagonal grain
Chipmark
The initial setting time of lime-pozzolana, is
30 minutes
60 minutes
90 minutes
120 minutes
Pick up the correct statement regarding low heat cement from the following:
It possesses less compressive strength
Its initial setting time is about one hour
Its final setting time is about 10 hours
All the above
Excess of silica in brick earth results in
Cracking and warping of bricks
Loss of cohesion
Enhancing the impermeability of bricks
None of the above
Expanded metal is
Manufactured from steel sheets
Used for reinforced concrete in road pavements
Measured in term of SWM (short way mesh) and LWM (long way mesh)
All the above
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
Minimum required water cement ratio for a workable concrete, is
0.30
0.40
0.50
0.60
Pick up the non-inflammable plastic from the following:
Cellulose acetate plastics
Polyvinyl chloride plastics
Phenol formaldehyde plastic
Urea formaldehyde plastic
Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
The stone suitable for rubble masonry should be.
Hard
Tough
Heavy
Light
The variety of pig iron used for manufacture of wrought iron, is
Bessemer pig
Grey or foundry pig
White forge pig
Mottled pig
Plywood is obtained by gluing wooden sheets at
100 to 150 N/cm2
100 to 130°C
Both (A) and (B)
Neither (A) nor (B)
Quick setting cement is produced by adding
Less amount of gypsum in very fine powdered form
More amount of gypsum in very fine powdered form
Aluminium sulphate in very fine powdered form
Pozzolana in very fine powdered form
To retard the initial setting time of cement, the compound responsible, is
Tri-calcium silicate
Gypsum
Di-calcium silicate
Tri-calcium aluminate
Pick up the correct statement from the following:
Melamine is obtained from calcium carbide
Formaldehyde is prepared synthetically from methane
The melamine when reacted with formaldehyde forms the melamineformaldehyde resin
All the above
Lime stone is not a
Sedimentary rock
Stratified rock
Aqueous rock
Metamorphic rock
Dolomite is a lime stone which contains carbonate of magnesia upto
15 %
20 %
25 %
45 %