Paints with white lead base are suitable for painting of
Wood work
Iron work
Both wood work and iron work
None of the above
Correct Answer :
A. Wood work
Related Questions
Polymerization helps to improve the property of
Strength
Rigidity
Elasticity
All of these
A pug mill is used for
Softening brick earth
Moulding brick earth
Tempering brick earth
Providing brick earth
Most commonly used solvent in oil paints, is
Petroleum
Spirit
Coal tar
Turpentine
Initial setting time of cement for asbestos cement products should be not less than
30 minutes
50 minutes
75 minutes
90 minutes
Pick up the correct statement from the following:
The average crushing strength of hand moulded bricks is 6000 t/m2
The average tensile strength of hand moulded brick is 200 t/m2
The average shearing strength of hand moulded brick is 600 t/m2
All the above
The slag which floats on the surface of the molten iron generally contains
Lime (CaO) 45%
Silica (SiO2) 35%
Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%
All the above
Asbestos cement
Is brittle
Warps due to changes in humidity
Strength is lowered when saturated by water
All of the above
Pick up the correct statement from the following:
Solder material is an alloy which melts at a temperature above 400°C
Brazing is done at temperature above 600°C to 1100°C
Brazing joint is stronger than the solder joint
All the above
Distemper is
A paint consisting of powdered chalk, pigments and water
A water proofing agent
A paint consisting of coloured cement and water
A drying agent
Asbestos
Is a natural fibrous mineral substance
Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
Contains iron oxide and alumina
All the above
Rocks formed due to alteration of original structure due to heat and excessive pressure are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Mastic asphalt is normally used for
Sound insulation
Water proofing
Fire proofing
None to these
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
Inner part of a timber log surrounding the pitch, is called
Sapwood
Cambium layer
Heart wood
None to these
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 commonly used lime in white washing, is
White lime
Fat lime
Hydraulic lime
Quick lime
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)
Wrought iron contains carbon about
1.5% to 5.5%
0.5% to 1.75%
0.1% to 0.25%
None to these
Which of the following ingredients of the brick earth enables the brick to retain its shape?
Alumina
Silica
Iron
Magnesia
The main ingredient of a good quality brick earth, is
Magnesia
Lime
Silica
Alumina
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
Seasoning is
A process of removing sap
Creosoting
Painting with sodium silicate
Coating with tar
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
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
1 : 2
1 : 3
1 : 4
1 : 6
The amount of water used for one kg of distemper is
0.2 liter
0.4 liter
0.6 liter
0.8 liter
Red short iron cracks when bent due to the presence of
Sulphur
Carbon
Phosphorus
Silicon
A good building stone should not absorb water more than
5 %
10 %
15 %
20 %
The property by virtue of which lime sets under water, is known as
Slacking
Setting
Hydraulicity
Calcining
The plastics made from cellulose resin
Are as clear as glass
Are tough and strong
Possess excellent electrical properties
All the above
Resins are
Not soluble in water
Soluble in spirit
Used in varnishes
Left behind on evaporation of oil