Materials and Construction Copper is dissolved from its ore by H₂SO₄ in a percolation tank made of Wood Reinforced concrete lined with lead High silicon iron (14% Si) Stainless steel Wood Reinforced concrete lined with lead High silicon iron (14% Si) Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Hot working of lead is carried out at 150° C 75° C 373° K Room temperature 150° C 75° C 373° K Room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Glass is corroded by Phosphoric acid Fluorine (dry or wet) Sulphuric acid None of these Phosphoric acid Fluorine (dry or wet) Sulphuric acid None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction 'Semi steel' is Stronger than cast iron Neither A nor B Produced by adding 10-20% steel to the cupola charge Both A & B Stronger than cast iron Neither A nor B Produced by adding 10-20% steel to the cupola charge Both A & B ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction To improve the machinability of steel, it is generally subjected to Spheroidising Annealing Normalising Tempering Spheroidising Annealing Normalising Tempering ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Ammonium chloride solution is stored/ treated in __________ vessels/pipes. Stainless steel Plain carbon steel Lead Rubber or durmet-20 lined Stainless steel Plain carbon steel Lead Rubber or durmet-20 lined ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS