Building Materials Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth? Alumina and iron Silica and alkalies Alkalies and magnesium Lime stone and alumina Alumina and iron Silica and alkalies Alkalies and magnesium Lime stone and alumina ANSWER DOWNLOAD EXAMIANS APP
Building Materials Resins are Left behind on evaporation of oil Soluble in spirit Not soluble in water Used in varnishes Left behind on evaporation of oil Soluble in spirit Not soluble in water Used in varnishes ANSWER DOWNLOAD EXAMIANS APP
Building Materials If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called Bessemer pig Mottled pig White or forge pig Grey or foundry pig Bessemer pig Mottled pig White or forge pig Grey or foundry pig ANSWER DOWNLOAD EXAMIANS APP
Building Materials Asbestos Contains iron oxide and alumina Is a natural fibrous mineral substance All of these Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Contains iron oxide and alumina Is a natural fibrous mineral substance All of these Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Brittleness of cold is due to an excess of Sulphur Carbon Silicon Phosphorus Sulphur Carbon Silicon Phosphorus ANSWER DOWNLOAD EXAMIANS APP
Building Materials The hardest rock is Diamond Quartz Talc Marble Diamond Quartz Talc Marble ANSWER DOWNLOAD EXAMIANS APP
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