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Building Materials

Building Materials
Jumper is a tool used for

Quarrying of stones
Testing of stones
None of these
Dressing of stones

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Building Materials
The percentage of alumina and silica in good fire clay vary respectively is

30, 70
25, 75
35, 65
All of these

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Building Materials
Bulking of sand is caused due to

Clay contents
Viscosity
Air voids
Surface moisture

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Building Materials
Commonly used thinner in

Cellulose paints is ethyl acetate
All listed here
Oil paints, is naphtha
Lacquer paints, is alcohol

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Building Materials
Plastics are compounds of carbon with element

Oxygen
Nitrogen
Hydrogen
All of these

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Building Materials
Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:

Magnesia
Lime
Alumina
Iron-oxide

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