The filler used in plastic bitumen, is
Shale powder
Talc powder
Asbestos powder
Plastic powder
Correct Answer :
C. Asbestos powder
Related Questions
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)
The most important constituent of varnish, is
Drier
Solvent
Resin
All the above
Bituminous fells are used for
Covering A.C. sheets
Covering sloping roofs
D.P.C.
None to these
Bitumen is generally obtained from
Organic material
Synthetic material
Petroleum product
Coal
Plastic asphalt is
Used as a water proofing layer over roof
A mixture of cement and asphalt
A natural asphalt
A refinery product
Softer variety of steel may be obtained by
Cementation process
Crucible process
Bessemer process
Open hearth process
The percentage of alumina and silica in good fire clay vary respectively is
25, 75
30, 70
35, 65
All of these
The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
20
15
5
0
In order of increasing percentage of silica, the correct sequence is
Sandy clay, calcareous clay, pure clay
Calcareous clay, pure clay, sandy clay
Pure clay, sandy clay, calcareous clay
None of these
The standard size of masonry bricks, is
18 cm × 8 cm × 8 cm
19 cm × 9 cm × 9 cm
20 cm × 10 cm × 10 cm
21 cm × 11 cm × 11 cm
A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called
Slate
Plank
Board
Strip
Quartzite, a metamorphic stone is
Hard
Brittle
Crystalline
All the above
Teak wood is suitable for
Sports articles
Furnitures
Railway sleepers
All the above
Number of bricks required for one cubic metre of brick masonry is
400
450
500
550
The main ingredients of Portland cement are
Lime and silica
Lime and alumina
Silica and alumina
Lime and iron
The most important constituent of an oil paint, is
Thinner
Vehicle
Pigment
All the above
The coefficient of hardness of stones used in road work should be greater than
10
12
15
17
Elastomers can extend upto
Five times their original dimensions
Seven times their original dimensions
Ten times their original dimensions
Three times their original dimensions
The steel used for the manufacture of rails, is
Bessemer steel
Mild steel
Cast steel
Stainless steel
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
Gypsum consists of
H₂S and CO₂
CaSO4 and H₂O
Lime and H₂O
CO₂ and calcium
The colour of statuary marble used for sculptor's work, is
Red
Blue
White
Green
Stones used for the construction of retaining walls must be
Soft
Hard
Light
Heavy
The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
The monsoon
The winter
The summer
None of these
Which of the following metamorphic rocks has the most weather resisting characteristics?
Marble
Quartzite
Slate
Lime stone
Pick up the correct characteristic of Pyroxene from the following:
It forms octagonal crystals
It converts to chlorine by hydration
Its density is 2.3 to 3.6 g/cm2
All the above
Dorry's testing machine is used for
Crushing test of stone
Hardness test of stone
Impact test of stone
Water absorption test
Granite mainly composed of quartz and feldspar particles, is obtained from
Sedimentary rocks
Metamorphic rocks
Igneous rocks
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
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