Building Materials When a brick is immersed in water for 24 hours and then dried, if 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence All listed here No grey or white deposits appear on the surface, the brick is free from soluble salts 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence All listed here No grey or white deposits appear on the surface, the brick is free from soluble salts 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence ANSWER DOWNLOAD EXAMIANS APP
Building Materials The compound of Portland cement which reacts immediately with water and also sets first is Tri-calcium silicate Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium silicate Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate ANSWER DOWNLOAD EXAMIANS APP
Building Materials The vehicle used in case of enamel paints is usually Varnish Linseed oil Water None of these Varnish Linseed oil Water None of these ANSWER DOWNLOAD EXAMIANS APP
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: Lime Alumina Magnesia Iron-oxide Lime Alumina Magnesia Iron-oxide ANSWER DOWNLOAD EXAMIANS APP
Building Materials For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is 70 : 20 : 10 60 : 35 : 5 None of these 80 : 13 : 7 70 : 20 : 10 60 : 35 : 5 None of these 80 : 13 : 7 ANSWER DOWNLOAD EXAMIANS APP
Building Materials Cast iron All listed here May contain 2 to 5 per cent of carbon with other impurities Is obtained by purifying pig iron Is manufactured in required shapes All listed here May contain 2 to 5 per cent of carbon with other impurities Is obtained by purifying pig iron Is manufactured in required shapes ANSWER DOWNLOAD EXAMIANS APP
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