Building Materials When a brick is immersed in water for 24 hours and then dried, if All listed here No grey or white deposits appear on the surface, the brick is free from soluble salts 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence All listed here No grey or white deposits appear on the surface, the brick is free from soluble salts 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence ANSWER DOWNLOAD EXAMIANS APP
Building Materials A good brick earth should contain: About 50% to 60% of silica About 20% to 30% of alumina All listed here Not more than 5% of lime About 50% to 60% of silica About 20% to 30% of alumina All listed here Not more than 5% of lime ANSWER DOWNLOAD EXAMIANS APP
Building Materials The rocks in which argil (or clay) predominates, are called Calcareous rocks Argillaceous rocks Siliceous rocks Igneous rocks Calcareous rocks Argillaceous rocks Siliceous rocks Igneous rocks ANSWER DOWNLOAD EXAMIANS APP
Building Materials Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a Baulk Strip Deal Cant Baulk Strip Deal Cant ANSWER DOWNLOAD EXAMIANS APP
Building Materials In arches, stratified stones are placed so that their planes are Radial Parallel None of these Perpendicular Radial Parallel None of these Perpendicular ANSWER DOWNLOAD EXAMIANS APP
Building Materials Cast iron Is obtained by purifying pig iron May contain 2 to 5 per cent of carbon with other impurities Is manufactured in required shapes All listed here Is obtained by purifying pig iron May contain 2 to 5 per cent of carbon with other impurities Is manufactured in required shapes All listed here ANSWER DOWNLOAD EXAMIANS APP
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