The percentage of water for normal consistency, is
5% to 15%
10% to 25%
15% to 25%
20% to 30%
Correct Answer :
C. 15% to 25%
Related Questions
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
Quick lime is
Calcium carbonate
Calcium oxide
Calcium hydroxide
None of the above
Sewer pipes are made of
Earthen ware
Stone ware
Refractory clay
All the above
Distemper is
A paint consisting of powdered chalk, pigments and water
A water proofing agent
A paint consisting of coloured cement and water
A drying agent
Mastic asphalt is generally used for
Damp proof course
Water proof layer
Partition walls
Both (A) and (B)
The base material for distemper, is
Chalk
Lime
Lime putty
Cement wash
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
Calcination of iron ores is done
To remove moisture
To remove carbonic acid
By roasting in heaps
All the above
Initial setting of cement is caused due to
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
A first class brick when immersed in cold water for 24 hours should not absorb water more than
15 %
20 %
22 %
25 %
Good quality sand is never obtained from
River
Lake
Sea
Gravel powder
Duco paints are
Plastic paints
Cellulose paints
Emulsion paints
Oil paints
Iron ore may contain
Carbon
Silicon
Phosphorus and manganese
All the above
For preparing porcelains, the clay should be
Sufficiently pure
Of high degree of tenacity
Of good plasticity
All the above
Knots in timber are
Defects caused by crushing fibres
Splits radiating from the centre
Speckled strains
Signs of branches cut off
Pick up the compound responsible for early strength of cement from the following:
Tetra-calcium alumino-ferrite
Tri-calcium silicate
Tri-calcium aluminate
Di-calcium silicate
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
Trowel
Square
Bolster
Scutch
A mortar joint in masonry which is normal to the face of wall is known as
Bed joint
Wall joint
Cross joint
Bonded joint
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
Which of the following timbers is suitable for making sports goods?
Mulberry
Mahogany
Sal
Deodar
Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product
For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
80 : 13 : 7
70 : 20 : 10
60 : 35 : 5
None of these
A stone is rejected if it absorbs water more than
5 %
10 %
15 %
20 %
Pick up the correct statement from the following:
Slaked lime contains calcium hydroxide
Quick lime contains calcium oxide
Slaked lime may be obtained from quick lime
All the above
Lime putty
Is made from hydraulic lime
Is made by adding lime to water
Can be used only upto three days
All of above
The size of modular bricks, is
10 × 10 × 9 cm
19 × 9 × 9 cm
22.5 × 10 × 8.5 cm
22.5 × 8.0 × 9 cm
Oil varnish generally consists of
Synthetic resin and spirit
Oil, wax and resin
Resin, oil and turpentine
Spirit, oil and wax
A good quality stone absorbs water less than
5 %
10 %
15 %
25 %
The variety of pig iron used for manufacture of wrought iron, is
Bessemer pig
Grey or foundry pig
White forge pig
Mottled pig
For light and ornamental casting, the most unsuitable pig iron, is
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig