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 Calcination of iron ores is done All listed here To remove moisture By roasting in heaps To remove carbonic acid All listed here To remove moisture By roasting in heaps To remove carbonic acid ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which one of the following is an air binding material? Quick lime Gypsum Acid-resistant cement All of these Quick lime Gypsum Acid-resistant cement All of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials Asbestos cement All of these Is brittle Strength is lowered when saturated by water Warps due to changes in humidity All of these Is brittle Strength is lowered when saturated by water Warps due to changes in humidity ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following trees yields hard wood? Shishum Pine Deodar Chir Shishum Pine Deodar Chir ANSWER DOWNLOAD EXAMIANS APP
Building Materials Sandstone is a(i) Sedimentary rock(ii) Aqueous rock(iii) Siliceous rock Only (i) All (i), (ii) and (iii) Both (i) and (iii) Both (i) and (ii) Only (i) All (i), (ii) and (iii) Both (i) and (iii) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
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