The timber having maximum resistance against white ants, is obtained from
Chir
Shishum
Sal
Teak
Correct Answer :
B. Shishum
Related Questions
In arches, stratified stones are placed so that their planes are
Parallel
Perpendicular
Radial
None of these
First class timber has an average life of
Less than one year
1 to 5 years
5 to 10 years
More than 10 years
Water paint is a
White wash
Colour wash
Whiting
All the above
Hydraulic lime is obtained by
Burning of lime stone
Burning of kankar
Adding water to quick lime
Calcination of pure clay
In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they
Split easily
Are affected by moisture
Both (A) and (B)
None of these
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
Sewer pipes are made of
Earthen ware
Stone ware
Refractory clay
All the above
Cast iron contains carbon approximately
1.5% to 5.5%
0.05% to 1.75%
0.250 %
None to these
Bitumen paints offer
Pleasing surface
Hard surface
Smooth surface
Protective surface
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber
The vehicle used in case of enamel paints is usually
Linseed oil
Water
Varnish
None of the above
The normal consistency of ordinary Portland cement is about
10 %
20 %
30 %
40 %
If the iron ore contains clay as an impurity, the flux added during calcination, is
Clay
Lime stone
Argillaceous iron ore
All the above
German silver is an alloy of
Zinc, lead and nickel
Silver, gold and lead
Copper, nickel and zinc
Copper, brass and zinc
Percentage of carbon content in mild steel is
Less than 0.25
Between 0.25 and 0.7
Between 0.7 and 1.5
Greater than 1.5
Strength of cement concrete primarily depends upon
Quality of water
Quantity of aggregate
Quantity of cement
Water-cement ratio
The portion of a brick cut to form angles other than right angles in plan, is known as
Queen closer
King closer
Closer
Squint brick
Galvanising means covering iron with a thin coat of
Tin
Zinc
Glaze
Coal tar
Fibre glass
Retains heat-longer
Has a higher strength to weight ratio
Is shock proof and fire retardant
All the above
Turpentine oil is used in paints as
Thinner
Vehicle
Base
Drier
According to IS 399-1963, the weight of the timber is specified at
8% moisture content
10% moisture content
12% moisture content
14% moisture content
Mastic asphalt is normally used for
Sound insulation
Water proofing
Fire proofing
None to these
Pick up the non-inflammable plastic from the following:
Cellulose acetate plastics
Polyvinyl chloride plastics
Phenol formaldehyde plastic
Urea formaldehyde plastic
Le-Chatelier's device is used for determining the
Setting time of cement
Soundness of cement
Tensile strength of cement
Compressive strength of cement
Wrought iron contains carbon about
1.5% to 5.5%
0.5% to 1.75%
0.1% to 0.25%
None to these
Durability of building stone is affected by its
Chemical composition
Texture
Resistance to atmosphere
All the above
Asbestos is
Corrugated sheet used for roofing
An incombustible fire proof material
An organic substance
All the above
During pudding
Molten metal is kept clear of the fuel
Carbon is converted into carbonic acid gas
Silicon forms a slag
All the above
Stones used for ornamental work must be
Soft
Hard
Light
Heavy
Pick up the correct statement from the following:
The average crushing strength of hand moulded bricks is 6000 t/m2
The average tensile strength of hand moulded brick is 200 t/m2
The average shearing strength of hand moulded brick is 600 t/m2
All the above