Bitumen felt
Is used as water proofing material
Is used as damp proofing material
Is made from bitumen and hessian fibres
All the above
Correct Answer :
D. All the above
Related Questions
Which one of the following is acid resistant asbestos?
Actinolite asbestos
Amosite asbestos
Anthophylite asbestos
All the above
The normal curing period for lime mortar, is:
1 day
3 days
7 days
10 days
Red short iron cracks when bent due to the presence of
Sulphur
Carbon
Phosphorus
Silicon
Portland pozzolana cement possesses
Higher resistance to chemical attack
Lower heat of hydration
Lower shrinkage on drying
All the above
The lime which contains high percentage of calcium oxide, is generally called
Fat lime
Rich lime
White lime
None of these
Pick up the incorrect statement from the following:
Hydraulic lime is generally obtained by burning kankar
Hydraulic lime sets slowly as compared to fat lime
Hydraulic lime is generally used in lime mortar
None of these
The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as
Quarrying of stones
Blasting of stones
Seasoning of stones
Dressing of stones
For high grade instruments the steel preferred to, is
Cast steel
Bessemer steel
Mild steel
Whitworth compressed steel
The compound of Portland cement which contributes to the strength after two to three years is
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra-calcium alumino ferrite
Acrylic sheets
Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
Are generally unaffected by most household detergents
Possess the light transmission rate of 93%
All the above
Minimum of 40% of iron, is available in
Magnetite
Red haematite
Limonite
Black band
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
Crushing strength of a first class brick should not be less than
3.5 N/mm²
7.0 N/mm²
10.5 N/mm²
14.0 N/mm²
The most durable varnish is
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
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
Chlorite, a green colour mineral is mainly derived from the decomposition of
Augite
Biotite
Hornblende
All of these
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber
PVC stands for
Plastic very compact
Polythene vinyl chloride
Polythene vinyl carbon
Polythene vanadium carbide
Lime concrete is generally used for
Wall foundations
Flooring at ground level
Both (A) and (B)
Neither (A) nor (B)
Cast iron is used for
Structural works in beams
Small sized water pipes
Columns and struts
None to these
Lacquer is
Oil paint
Distemper
Spirit varnish
None to these
In paints, the pigment is responsible for
Durability
Colour
Smoothness
Glassy face
The coefficient of hardness of stones used in road work should be greater than
10
12
15
17
Mild steel is used for
Structural works in beams, joints and girders
Small sized water pipes
Columns and struts
None of these
Upto a maximum of 72% of iron, is available in
Magnetite
Limonite
Siderite
Iron pyrites
The sequence of refractory materials according to increasing melting points is:
Dolomite, Magnesia, Bauxite, Chromites
Bauxite, Chromites, Dolomite, Magnesia
Magnesia, Bauxite, Dolomite, Chromites
None of these
For light and ornamental casting, the most unsuitable pig iron, is
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
For lime concrete,
Slump is 50 to 75 mm
Flexural strength at 90 days is 0.2 N/mm2
Compressive strength at 90 days is 1.5 N/mm2
All the above
The most commonly used base for timber painting, is
Red lead
Zinc white
White lead
Titanium white
Pick up the rock which is not a sedimentary rock from the following:
Gravel
Sand stone
Gypsum
Dolerite