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 Glass is corroded by Fluorine (dry or wet) None of these Sulphuric acid Phosphoric acid Fluorine (dry or wet) None of these Sulphuric acid Phosphoric acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Materials having __________ lattice structure are usually most ductile. Cubic H.c.p. c.c. F.c.c. Cubic H.c.p. c.c. F.c.c. ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is produced by addition polymerisation? Urea-formaldehyde Polybutadiene Phenol formaldehyde Dacron Urea-formaldehyde Polybutadiene Phenol formaldehyde Dacron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction For spinning viscose rayon, the extrusion spinnerettes are made of Platinum or gold alloys Aluminium High carbon steel Nickel Platinum or gold alloys Aluminium High carbon steel Nickel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The heat treatment process to which castings and the steel balls produced by cold heading are subjected is Tempering Normalising Annealing None of these Tempering Normalising Annealing None of these ANSWER DOWNLOAD EXAMIANS APP
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