Building Materials For the manufacture of Portland cement, the proportions of raw materials used, are Silica 40% ; lime 40% ; other ingredients 20% Silica 70% ; lime 20% ; other ingredients 10% Lime 63% ; silica 22% ; other ingredients 15% Lime 22% ; silica 63% ; other ingredients 15% Silica 40% ; lime 40% ; other ingredients 20% Silica 70% ; lime 20% ; other ingredients 10% Lime 63% ; silica 22% ; other ingredients 15% Lime 22% ; silica 63% ; other ingredients 15% ANSWER DOWNLOAD EXAMIANS APP
Building Materials Pig iron is manufactured from the ores by Calcination and roasting Smelting Dressing All of these Calcination and roasting Smelting Dressing All of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials When a brick is immersed in water for 24 hours and then dried, if All listed here 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 No grey or white deposits appear on the surface, the brick is free from soluble salts All listed here 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 No grey or white deposits appear on the surface, the brick is free from soluble salts ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following represents a metamorphic rock?(i) Slate(ii) Shale(iii) Quartzite All (i), (ii) and (iii) Only (iii) Both (ii) and (iii) Both (i) and (iii) All (i), (ii) and (iii) Only (iii) Both (ii) and (iii) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Geologically, marble is known as Stratified rock Metamorphic rock Igneous rock Sedimentary rock Stratified rock Metamorphic rock Igneous rock Sedimentary rock ANSWER DOWNLOAD EXAMIANS APP
Building Materials The commonly used lime in white washing, is Quick lime Hydraulic lime Fat lime White lime Quick lime Hydraulic lime Fat lime White lime ANSWER DOWNLOAD EXAMIANS APP
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