According to IS 399-1963, the weight of the timber is specified at
8% moisture content
10% moisture content
12% moisture content
14% moisture content
Correct Answer :
C. 12% moisture content
Related Questions
The steel used for the manufacture of rails, is
Bessemer steel
Mild steel
Cast steel
Stainless steel
Durability of building stone is affected by its
Chemical composition
Texture
Resistance to atmosphere
All the above
The main ingredients of Portland cement are
Lime and silica
Lime and alumina
Silica and alumina
Lime and iron
Age of a tree may be ascertained by
Radius of its stem
Circumference of its stem
Number of branches
Number of annual rings
In arches, stratified stones are placed so that their planes are
Parallel
Perpendicular
Radial
None of these
A badly mixed cement concrete results in
Segregation
Bleeding
Honey combing
None of these
The most fire resistant paints are:
Enamel paints
Aluminium paints
Asbestos paints
Cement paints
The colour of statuary marble used for sculptor's work, is
Red
Blue
White
Green
Which of the following gradients exerts maximum influence on properties of steel?
Iron
Carbon
Manganese
Sulphur
Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
Alumina
Lime
Iron-oxide
Magnesia
Which of the following is a rock?
Quartz
Mica
Gypsum
None of the above
Bituminous fells are used for
Covering A.C. sheets
Covering sloping roofs
D.P.C.
None to these
The low voltage porcelain is mainly used for
Switch block
Insulating tubes
Lamp sockets
All of these
Vanadium steel is generally used for
Railway switches and crossing
Bearing balls
Magnets
Axles and springs
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
Lacquer paints
Are generally applied on structural steel
Are less durable as compared to enamel paints
Consist of resin and nitro-cellulose
All the above
The PVC doors and windows are preferred as they are
Rust proof
Rot proof
Water proof
All of these
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
The rocks formed from molten magma, are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Steel contains carbon approximately
1.50% to 5.6%
0.05% to 1.75%
0.25 %
None to these
Pick up the correct statement from the following:
Melamine is obtained from calcium carbide
Formaldehyde is prepared synthetically from methane
The melamine when reacted with formaldehyde forms the melamineformaldehyde resin
All the above
According to IS 399-1963, the weight of the timber is specified at
8% moisture content
10% moisture content
12% moisture content
14% moisture content
For obtaining vinyl chloride acetate, the method used, is
Addition polymerization
Condensation polymerization
Co-polymerization
None of these
Pick up the non-inflammable plastic from the following:
Cellulose acetate plastics
Polyvinyl chloride plastics
Phenol formaldehyde plastic
Urea formaldehyde plastic
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
Red short iron cracks when bent due to the presence of
Sulphur
Carbon
Phosphorus
Silicon
Refractory bricks are used for
Retaining walls
Columns
Piers
Combustion chambers
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 commonly used thinner in oil paints, is
Naphtha
Turpentine
Both (a) and (b)
None the these
The presence of original rounded surface on the manufactured piece of timber, is called
Wane
Torn grain
Diagonal grain
Chipmark