Building Materials Asbestos Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Is a natural fibrous mineral substance All of these Contains iron oxide and alumina Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Is a natural fibrous mineral substance All of these Contains iron oxide and alumina ANSWER DOWNLOAD EXAMIANS APP
Building Materials Calcination of iron ores is done By roasting in heaps To remove moisture All listed here To remove carbonic acid By roasting in heaps To remove moisture All listed here To remove carbonic acid ANSWER DOWNLOAD EXAMIANS APP
Building Materials Ultimate strength to cement is provided by Tri-calcium silicate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium aluminate Tri-calcium silicate Di-calcium silicate Tetra calcium alumino ferrite Tri-calcium aluminate ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following is a mineral? Quartz Basalt Granite Syenite Quartz Basalt Granite Syenite ANSWER DOWNLOAD EXAMIANS APP
Building Materials Plaster of Paris is obtained by calcining Gypsum Bauxite Lime stone None of these Gypsum Bauxite Lime stone None of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials The basic purpose of a retarder in concrete is To render the concrete more water tight To decrease the initial setting time of cement paste in concrete To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete To render the concrete more water tight To decrease the initial setting time of cement paste in concrete To improve the workability of concrete mix To increase the initial setting time of cement paste in concrete ANSWER DOWNLOAD EXAMIANS APP
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