Materials and Construction Copper is dissolved from its ore by H₂SO₄ in a percolation tank made of Wood High silicon iron (14% Si) Reinforced concrete lined with lead Stainless steel Wood High silicon iron (14% Si) Reinforced concrete lined with lead Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A chemical change takes place when iron Melts Rusts Is heated None of these Melts Rusts Is heated None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction High degree of toughness is a must for None of these Cold work tool steel Shock resisting steel High speed steel None of these Cold work tool steel Shock resisting steel High speed steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Cold work tool steel should have All of these High toughness Poor hardenability High wear resistance All of these High toughness Poor hardenability High wear resistance ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines? Chromium steel None of these Silicon steel Molybdenum steel Chromium steel None of these Silicon steel Molybdenum steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction In a plate type heat exchanger, heat transfer plates are never made of Hastealloy C Stainless steel Cast iron Titanium Hastealloy C Stainless steel Cast iron Titanium ANSWER DOWNLOAD EXAMIANS APP
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