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Q.1
The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as
Knots
Rindgalls
Burls
None of these
Q.2
The age of a tree can be known by examining
Cambium layer
Annular rings
Medullary rays
Heart wood
Q.3
In a mortar, the binding material is
Cement
Sand
Surkhi (brick-dust)
Cinder
Q.4
Lime mortar is generally made with
Quick lime
Fat lime
Hydraulic lime
Plain lime
Q.5
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
Q.6
Which one of the following polymers is obtained from condensation polymerization?
Phenol formaldehyde
Carbamide
Melamine-formaldehyde
All of these
Q.7
The rocks in which argil (or clay) predominates, are called
Siliceous rocks
Argillaceous rocks
Calcareous rocks
Igneous rocks
Q.8
The trunk of tree left after cutting all the branches is known as
Log
Batten
Plank
Baulk
Q.9
Pick up the correct statement from the following:
Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38%
The bulking of fine sand is more than that of coarse sand
If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing
All the above
Q.10
Pick up the correct statement from the following:
Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
Cupola furnace is used for the manufacture of cast iron
Red short iron is of no value for welding purpose
All the above
Q.11
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
Q.12
Forge pig may be converted to wrought iron by
Rolling
Pudding
Shingling
Refining
Q.13
If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
Q.14
Which of the following should be used for hearting of thicker walls?
Headers
Stretchers
Brick bats
Queen closer
Q.15
A badly mixed cement concrete results in
Segregation
Bleeding
Honey combing
None of these
Q.16
Minimum thickness of wall where single Flemish bond can be used is
Half brick thick
One brick thick
One and a half bricks thick
Two bricks thick
Q.17
Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
Alumina
Lime
Iron-oxide
Magnesia
Q.18
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
Q.19
Seasoning of timber is done
To make it water proof
To paint its surface
To increase its temperature
To remove water
Q.20
Pick up the correct statement from the following:
Acid test is done to find out the weathering quality of stones
Attrition test is done to find out the rate of wear of stones which are used in road construction
Crushing test is done to find out the compressive strength of the stone
All the above
Q.21
Manganese steels
Are non-magnetic
Possess high electrical resistance
Possess low coefficient of expansion
All the above
Q.22
Mastic asphalt is
Water proof
Fire proof
Elastic
All the above
Q.23
Hydraulic lime is obtained by
Burning of lime stone
Burning of kankar
Adding water to quick lime
Calcination of pure clay
Q.24
The thermosetting plastic
Becomes rigid when moulded at suitable pressure and temperature
At 127°C to 177°C permanently set and further application of heat does not soften it
Chars at 343°C
All the above
Q.25
For slaking of 10 kg of CaO, the theoretical amount of water is
2.2 kg
1.5 kg
3.2 kg
None of these
Q.26
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
Q.27
The most commonly used base for timber painting, is
Red lead
Zinc white
White lead
Titanium white
Q.28
Slacking of lime is affected by
Keeping it exposed to air
Immersing the lime in water
Crushing the lime lumps
None of these
Q.29
Lime stone is not a
Sedimentary rock
Stratified rock
Aqueous rock
Metamorphic rock
Q.30
Soundness of cement is tested by
Vicat's apparatus
Le-chatelier apparatus
Compressive strength testing apparatus
None of these
Q.31
For sanitary pipes and chemical stonewares,
Salt glazing is used
Lead glazing is used
Opaque glazing is used
None of these
Q.32
First class timber has an average life of
Less than one year
1 to 5 years
5 to 10 years
More than 10 years
Q.33
Iron ore may contain
Carbon
Silicon
Phosphorus and manganese
All the above
Q.34
In the method of condensation polymerization,
Low-molecular substances are removed from the high molecular substance
The reaction proceeds with an evolution of ammonia
The reaction proceeds with an evolution of hydrogen chloride
All of the above
Q.35
Lime putty
Is made from hydraulic lime
Is made by adding lime to water
Can be used only upto three days
All of above
Q.36
Kaolin is chemically classified as
Metamorphic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Q.37
Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product
Q.38
Laterite is a/an
Volcanic rock
Argillaceous rock
Calcareous rock
Siliceous rock
Q.39
The fire clay contains pure
Lime
Oxide of iron
Hydrated aluminium silicate
Magnesium
Q.40
Slate is formed by metamorphic action on
Shale
Lime stone
Sand stone
Granite
Q.41
Bitumen is generally obtained from
Organic material
Synthetic material
Petroleum product
Coal
Q.42
Which of the following is a rock?
Quartz
Mica
Gypsum
None of the above
Q.43
The compound of Portland cement which reacts immediately with water and also sets first is
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Q.44
Priming consists of
One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
One part of white lead, 8 parts of chalk and one part of linseed oil
None to these
Q.45
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
Q.46
A well seasoned timber may contain moisture up to
4 to 6 %
6 to 8 %
8 to 10 %
10 to 12 %
Q.47
The ultimate tensile strength of structural mild steel is about
Q.48
Generally wooden moulds are made from
Ply wood
Shishum wood
Deodar wood
Teak wood
Q.49
The commonly used thinner in oil paints, is
Naphtha
Turpentine
Both (a) and (b)
None the these
Q.50
Most commonly used solvent in oil paints, is
Petroleum
Spirit
Coal tar
Turpentine
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