To give a brilliant finish, the type of varnish used, is
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
Correct Answer :
B. Spirit varnish
Related Questions
The usual percentages of clay and metal in cermet are:
50%, 50%
60%, 40%
70%, 30%
80%, 20%
The initial setting time of hydraulic lime, is
30 minutes
60 minutes
90 minutes
120 minutes
Calcination of iron ores is done
To remove moisture
To remove carbonic acid
By roasting in heaps
All the above
Minimum of 40% of iron, is available in
Magnetite
Red haematite
Limonite
Black band
Which of the following is a mineral?
Basalt
Granite
Quartz
Syenite
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
Pick up the correct statement from the following:
Rusting is caused due to combined action of air, moisture and carbon dioxide
During rusting, first ferrous bicarbonates are formed
On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
All the above
German silver is an alloy of
Zinc, lead and nickel
Silver, gold and lead
Copper, nickel and zinc
Copper, brass and zinc
A good building stone should not absorb water more than
5 %
10 %
15 %
20 %
In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
English bond
Double Flemish bond
Zigzag bond
Single Flemish bond
The plastics made from cellulose resin
Are as clear as glass
Are tough and strong
Possess excellent electrical properties
All the above
Refractory bricks resist
High temperature
Chemical action
Dampness
All the above
Smith's test of stones is performed to find out
The presence of soluble matter of stone
The compressive strength of the stone
The hardness of the stone
The toughness of the stone
Percentage content of silica in window glass, is
40 to 45
50 to 55
60 to 65
70 to 75
For one cubic metre of brick masonry, number of bricks required, is
400
425
450
500
The tendency of a stone is, to split along:
Texture
Fracture
Cleavage
Structure
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
The ultimate tensile strength of structural mild steel is about
160 N/mm²
260 N/mm²
420 N/mm²
520 N/mm²
Bitumen is generally obtained from
Organic material
Synthetic material
Petroleum product
Coal
Oil varnish generally consists of
Synthetic resin and spirit
Oil, wax and resin
Resin, oil and turpentine
Spirit, oil and wax
Pug mill is used for
Preparation of clay
Moulding of clay
Drying of bricks
Burning of bricks
The wedging is adopted for quarrying costly stratified rock such as
Laterite
Marble
Limestone
All the above
The most commonly used synthetic abrasive is
Aluminium carbide
Boric acid
Silicon
All of these
French polish is
Oil paint
Distemper
Spirit varnish
None to these
Bitumen paints offer
Pleasing surface
Hard surface
Smooth surface
Protective surface
For melting one tonne of cast iron
700 m3 air is required
20 kg limestone is required
One quintal coke is required
All the above
Seasoning of timber is done
To make it water proof
To paint its surface
To increase its temperature
To remove water
Excess of alumina in brick earth makes the brick
Impermeable
Brittle and weak
To lose cohesion
To crack and warp on drying
A first class brick when immersed in cold water for 24 hours should not absorb water more than
15 %
20 %
22 %
25 %
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