Bitumen emulsion is
A liquid containing bitumen in suspension
A paint
Used as anti-corrosive paint
All the above
Correct Answer :
D. All the above
Related Questions
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
Which of the following has more fire resisting characteristics?
Marble
Lime stone
Compact sand stone
Granite
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
Plywood is normally available
1 mm thick
2 mm thick
2 to 3 mm thick
3 mm to 4 mm thick
In paints, the pigment is responsible for
Durability
Colour
Smoothness
Glassy face
Soundness test of cement determines
Quality of free lime
Ultimate strength
Durability
Initial setting
In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
Right angles
45°
60°
Parallel
The wedging is adopted for quarrying costly stratified rock such as
Laterite
Marble
Limestone
All the above
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
The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called
Plutonic rocks
Hypabyssal rocks
Volcanic rocks
Igneous rocks
Pick up the correct statement from the following:
Soft stones are required for carving
Light stones are required for arches
Hard stones are required to stand high pressure
All the above
During smelting process, the combination of fuel in the furnace
Forms carbon dioxide
Carbon dioxide with carbon forms carbon mono-oxide
Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
All the above
Pick up the polymineralic rock from the following:
Quartz sand
Pure gypsum
Magnesite
Granite
Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)
Hydraulic lime is obtained by
Burning of lime stone
Burning of kankar
Adding water to quick lime
Calcination of pure clay
Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing The correct answer is
(i) and (ii)
(i) and (iv)
(ii) and (iii)
(iii) and (iv)
Cross cut saw is used for
Cutting soft stones
Cutting hard stones
Cutting large blocks of stones
Dressing stones
The presence of sand in brick earth prevents:
Cracking of bricks
Shrinkage of bricks
Warping of bricks
None of these
For the manufacture of Portland cement, the proportions of raw materials used, are
Lime 63% ; silica 22% ; other ingredients 15%
Lime 22% ; silica 63% ; other ingredients 15%
Silica 40% ; lime 40% ; other ingredients 20%
Silica 70% ; lime 20% ; other ingredients 10%
The main constituent which imparts hydraulicity to hydraulic lime is
Calcium oxide
Silica
Clay
Water
Pick up the correct statement from the following:
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
For thin structures which remain continuously under water, the watercement ratio by weight should be 0.55
All the above
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
A well seasoned timber may contain moisture up to
4 to 6 %
6 to 8 %
8 to 10 %
10 to 12 %
Which of the following ingredients of the brick earth enables the brick to retain its shape?
Alumina
Silica
Iron
Magnesia
In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
English bond
Double Flemish bond
Zigzag bond
Single Flemish bond
Pick up the correct statement from the following:
Corrugated sheet iron is made by passing plain sheets between grooved rollers
Strength and stiffness of corrugated sheets are considerably increased
Corrugated sheets are generally used on slanting roofs
All the above
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
Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
Absence of sun light
Dampness
Presence of sap
All the above
Knots in timber are
Defects caused by crushing fibres
Splits radiating from the centre
Speckled strains
Signs of branches cut off
Galvanising means covering iron with a thin coat of
Tin
Zinc
Glaze
Coal tar