A) Iron, chromium and vanadium B) Iron, chromium and molybdenum C) Iron, chromium and nickel D) Iron and nickel. Ans : (C)
A) 0.08 to 0.3% B) 0.5 to 1.49% C) 1.5 to 1.99% D) 2 to 4.5%. Ans : (A)
A) loudspeaker cones B) cutting tools C) transistors D) large machine covers. Ans : (B)
A) ferrimagnetic materials B) diamagnetic materials C) paramagnetic materials D) ferromagnetic materials. Ans : (A)
A) SiO2 B) B2O3 C) A12O3 D) Fe2O3. Ans : (A)
A) Potassium B) Calcium C) Sodium D) Cadmium. Ans : (D)
A) Clad metal B) Bimetal C) Eutectic D) Cold rolled metal. Ans : (B)
A) nichrome B) silicon carbide C) charcoal D) graphite. Ans : (B)
A) under the conditions of high temperature and pressure B) at triple point C) near critical temperature D) near absolute zero temperature. Ans : (C)
A) Nickel iron B) Silicon iron C) Cobalt steel D) All of the above. Ans : (C)