Mastic asphalt is
Acid resisting material
Non-corrosive material
Corrosive material
Heating-resisting material
Correct Answer :
B. Non-corrosive material
Related Questions
The main constituent of fly-ash, is
Aluminium oxide
Silica
Ferrous oxide
All of these
The PVC doors and windows are preferred as they are
Rust proof
Rot proof
Water proof
All of these
With increase in moisture content, the bulking of sand
Increases
Decreases
First increases to a certain maximum value and then decreases
First decreases to a certain minimum value and then increases
The frog of a brick is normally made on its
Top face
Bottom face
Longer face
Shorter side
Plywood is normally available
1 mm thick
2 mm thick
2 to 3 mm thick
3 mm to 4 mm thick
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
Mastic asphalt is normally used for
Sound insulation
Water proofing
Fire proofing
None to these
Pick up the correct statement from the following:
The low voltage porcelain is prepared by wet process
The high voltage porcelain is prepared by dry process
The low voltage porcelain is prepared by dry process
None of the above
The lime which contains high percentage of calcium oxide, is generally called
Fat lime
Rich lime
White lime
None of these
The steel used for rails under heavy traffic and on sharp curves, is
Nickel steel
Chrome steel
Manganese steel
Vanadium steel
A bull nose brick is not used for
Rounding off sharp corners
Pillars
Decoration purpose
Arches
In the method of condensation polymerization,
Low-molecular substances are removed from the high molecular substance
The reaction proceeds with an evolution of ammonia
The reaction proceeds with an evolution of hydrogen chloride
All of the above
Rapid hardening cement contains
Tri-calcium silicate
Tri-calcium aluminate
Tetra-calcium alumino-ferrite
Di-calcium silicate
Which one of the following is an air binding material?
Gypsum
Acid-resistant cement
Quick lime
All of these
The most fire resistant paints are:
Enamel paints
Aluminium paints
Asbestos paints
Cement paints
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber
The rock generally used for roofing, is
Granite
Basalt
Slate
Pumice
A mortar joint in masonry which is normal to the face of wall is known as
Bed joint
Wall joint
Cross joint
Bonded joint
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
Bitumen felt
Is used as water proofing material
Is used as damp proofing material
Is made from bitumen and hessian fibres
All the above
Granite is not suitable for ordinary building purpose because
It cannot be polished
It is not a fire proof material
It is costly
It has less crushing strength
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
Pick up the correct statement from the following:
Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
Cracked paints may be cured by removing paint and giving a fresh coat of paint
Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
All the above
Expanded metal is
Manufactured from steel sheets
Used for reinforced concrete in road pavements
Measured in term of SWM (short way mesh) and LWM (long way mesh)
All the above
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
A heavy stone is suitable for
Arches
Rubble masonry
Roads
Retaining walls
Asphalt is obtained from
Petroleum distillation
Bitumen distillation
Plastic distillation
None of these
Percentage of silica in a good brick earth lies between
5 to 10 %
20 to 30 %
50 to 60 %
70 to 80 %
Which one of the following polymers is obtained from condensation polymerization?
Phenol formaldehyde
Carbamide
Melamine-formaldehyde
All of these