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 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 All listed here 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence 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 All listed here ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following is a rock? Mica Gypsum Quartz None of these Mica Gypsum Quartz None of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials Addition of pozzolana to ordinary Portland cement increases Permeability Shrinkage Bleeding Heat of hydration Permeability Shrinkage Bleeding Heat of hydration ANSWER DOWNLOAD EXAMIANS APP
Building Materials The most important constituent of varnish, is Drier Solvent Resin All listed here Drier Solvent Resin All listed here ANSWER DOWNLOAD EXAMIANS APP
Building Materials The stone suitable for rubble masonry should be. Hard Heavy Light Tough Hard Heavy Light Tough ANSWER DOWNLOAD EXAMIANS APP
Building Materials The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively: 15, 75, 10 10, 75, 15 10, 15, 75 75, 10, 15 15, 75, 10 10, 75, 15 10, 15, 75 75, 10, 15 ANSWER DOWNLOAD EXAMIANS APP
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