Calcination of iron ores is done
Invar contains
The kiln which may work throughout the year, is
The commonly used thinner in oil paints, is
The main ingredient of a good quality brick earth, is
Generally wooden moulds are made from
Lime stone is not a
Second class bricks
The sequence of refractory materials according to increasing melting points is :
Seasoning of timber is essential to remove
The melting point of silica is :
The portion of a brick cut to form angles other than right angles in plan, is known as
In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
In a rock calcium carbonate predominates. State whether it is :
Strength of cement concrete primarily depends upon
Based on flow quality, the sequence of pipes is
The minimum compressive strength of 1st class bricks should be
Bitumen is generally obtained from
Wrought iron contains carbon about
The size of modular bricks, is
A piece of timber whose thickness and width are respectively 5 cm andcm is called
Pick up the correct statement from the following:
Veneering means
Plywood is obtained by gluing wooden sheets at
The most durable varnish is
In order of increasing percentage of silica, the correct sequence is
Rapid hardening cement contains
Bitumen emulsion is
A volatile substance added to a paint to make its application easy and smooth, is known as
For one cubic metre of brick masonry, number of bricks required, is
Gniess is obtained from
Ultimate strength to cement is provided by
The commonly used colour pigment in paints, is
The initial setting time of lime-pozzolana, is
The main constituent of fly-ash, is
Bitumen in
Pig iron is manufactured from the ores by
Softer variety of steel may be obtained by
The rocks which are formed due to pouring of magma at the earth's surface are called
For filling cracks in masonry structures, the type of bitumen used, is
Sand stone is
Good quality stones must
Which one of the following is acid resistant asbestos:
The rocks formed by gradual deposition, are called
Elastomers can extend upto
Varnish is a transparent or semi-transparent solution of resinuous substances in
The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
The plastics made from cellulose resin
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