The commonly used thinner in oil paints, is
Naphtha
Turpentine
Both (a) and (b)
None the these
Correct Answer :
C. Both (a) and (b)
Related Questions
Ground glass
Is made by grinding its one side
Is made by melting powdered glass paints surface
Is used for getting light without transparency
All the above
According to ISI, bitumen is classified into
2 grades
4 grades
8 grades
10 grades
Pick up the correct statement from the following:
The plywoods do not split or crack due to changes in atmosphere
The commercial plywoods are available upto 150 cm wide and upto 300 cm long
The plywoods possess uniform tensile strength in all directions
All the above
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 maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
1
2
3
4
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 rocks formed by gradual deposition, are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
The practical limit of moisture content achieved in air drying of timber is
5 %
15 %
25 %
35 %
Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below:
Both A and R is true and, R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
The rocks formed from molten magma, are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Quick lime
Generates heat when added to water
Reacts with carbon dioxide
May be used for white-washing
All the above
The moisture content in a well seasoned timber is
4 % to 6 %
10 % to 12 %
15 % to 20 %
100 %
Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a
Cant
Deal
Baulk
Strip
Linseed oil is used in paints as
Thinner
Vehicle
Base
Drier
Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?
Lime stone and alumina
Silica and alkalies
Alumina and iron
Alkalies and magnesium
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
Quick lime (or caustic lime)
Is obtained by the calcination of pure lime stone
Has great affinity to moisture
Is amorphous
All the above
Plastic
Is an organic substance
Consists of natural or synthetic binders
Finished products are rigid and stable at normal temperature
All the above
Bitumen is generally obtained from
Organic material
Synthetic material
Petroleum product
Coal
The vehicle used in case of enamel paints is usually
Linseed oil
Water
Varnish
None of the above
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
Jhumb bricks are
Under burnt
Over burnt
Kutcha
None of these
Cast iron is used for
Structural works in beams
Small sized water pipes
Columns and struts
None to these
In a mortar, the binding material is
Cement
Sand
Surkhi
Cinder
A heavy stone is suitable for
Arches
Rubble masonry
Roads
Retaining walls
Slacking of lime is affected by
Keeping it exposed to air
Immersing the lime in water
Crushing the lime lumps
None of these
Cast steel is manufactured by
Cementation process
Crucible process
Bessemer process
Open hearth process
Good quality sand is never obtained from
River
Lake
Sea
Gravel powder
Le-Chatelier's device is used for determining the
Setting time of cement
Soundness of cement
Tensile strength of cement
Compressive strength of cement
The rock generally used for roofing, is
Granite
Basalt
Slate
Pumice