PVC stands for
Plastic very compact
Polythene vinyl chloride
Polythene vinyl carbon
Polythene vanadium carbide
Correct Answer :
B. Polythene vinyl chloride
Related Questions
Pick up the correct statement from the following:
The lime in excess makes the cement unsound and causes the cement to expand and disintegrate
The silica in excess makes the cement stronger but its setting time also increases
The excess amount of alumina weakens the cement
All the above
Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
Quick setting cement
Rapid hardening cement
White cement
Low heat Portland cement
The steel used for rails under heavy traffic and on sharp curves, is
Nickel steel
Chrome steel
Manganese steel
Vanadium steel
The coefficient of hardness of stones used in road work should be greater than
10
12
15
17
Pick up the correct statement from the following:
The phenol is carbolic acid
The phenol is either extracted from coal-tar or prepared from benzene
Phenol reacts with formaldehyde, to form phenol formaldehyde resin
All the above
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
10 %
15 %
20 %
25 %
Advantage of a clamp compared to a kiln for burning bricks is that
It takes less time for burning
It gives more output of first class bricks
It has less initial cost
It is suitable when bricks are required in large numbers
Sewer pipes are made of
Earthen ware
Stone ware
Refractory clay
All the above
Specific gravity for most of the building stones lies between
1.5 to 2.0
2.0 to 2.5
2.5 to 3.0
3.0 to 3.5
The low voltage porcelain is mainly used for
Switch block
Insulating tubes
Lamp sockets
All of these
Cement paints usually
Contain hydrated lime
Contain 5% to 10% colour pigments
Contain 5% sodium chloride
All the above
The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
15, 75, 10
75, 10, 15
10, 15, 75
10, 75, 15
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
Crushing strength of a good building stone should be more than
50 MPa
100 MPa
150 MPa
200 MPa
Pug mill is used for
Preparation of clay
Moulding of clay
Drying of bricks
Burning of bricks
A prime coat is given to steel work with
An oxide of iron paint
A mixture of white lead and lead paint
A special paint
Cement paint
The tendency of a stone is, to split along:
Texture
Fracture
Cleavage
Structure
The pressure acting on the stones in stone masonry construction should be
Along the direction of bedding planes
At 45° to the direction of bedding planes
At 60° to the direction of bedding planes
Perpendicular to the direction of bedding planes
A good brick earth should contain:
About 20% to 30% of alumina
About 50% to 60% of silica
Not more than 5% of lime
All the above
The ultimate tensile strength of structural mild steel is about
160 N/mm²
260 N/mm²
420 N/mm²
520 N/mm²
Which of the following has more fire resisting characteristics?
Marble
Lime stone
Compact sand stone
Granite
The fire clay contains pure
Lime
Oxide of iron
Hydrated aluminium silicate
Magnesium
Formula for quick lime, is
CaCO3
Ca(OH)2
CO3CO2
None to these
Pick up the correct statement regarding low heat cement from the following:
It possesses less compressive strength
Its initial setting time is about one hour
Its final setting time is about 10 hours
All the above
Which of the following is a rock?
Quartz
Mica
Gypsum
None of the above
Which one of the following is used for preparing porcelain?
Clay
Feldspar
Quartz
All of these
Putty is
Made with finely powdered chalk and linseed oil
Used for fixing glass panes
Softened by a solution of pearl ash and quick-lime soaked in water
All the above
Spirit varnish generally consists of
Oil, wax and resin
Alcohol, wax and turpentine
Pigment and synthetic resin
Spirit and shellac
The frog of a brick is normally made on its
Top face
Bottom face
Longer face
Shorter side