Materials and Construction Copper is dissolved from its ore by H₂SO₄ in a percolation tank made of High silicon iron (14% Si) Stainless steel Reinforced concrete lined with lead Wood High silicon iron (14% Si) Stainless steel Reinforced concrete lined with lead Wood ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Spark plugs are made of Carborundum Metallic carbides High alumina ceramic Corundum Carborundum Metallic carbides High alumina ceramic Corundum ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is not used as the ceramic material in 'cermets'? Oxides Nitrides Silicides Carbides Oxides Nitrides Silicides Carbides ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Galvanised iron is Harder Alumina coated iron Protected from rusting None of these Harder Alumina coated iron Protected from rusting None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain Increases in proportion to stress Increases very quickly Decreases in proportion to stress Decreases very quickly Increases in proportion to stress Increases very quickly Decreases in proportion to stress Decreases very quickly ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Super conductors are those substances, which Offer no resistance to current flow Conduct electricity at high temperature Conduct electricity at low temperature Offer high resistance to current flow Offer no resistance to current flow Conduct electricity at high temperature Conduct electricity at low temperature Offer high resistance to current flow ANSWER DOWNLOAD EXAMIANS APP
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