πŸ“Š Materials And Construction
Q. Nickel as a material of construction
  • (A) Is used as an alloying element for both ferrous & non-ferrous alloys
  • (B) Is paramagnetic below 415Β°C (its Curie temperature)
  • (C) Dimagnetic
  • (D) Has a body centred cubic (bcc) crystal lattice structure
πŸ’¬ Discuss
βœ… Correct Answer: (A) Is used as an alloying element for both ferrous & non-ferrous alloys
πŸ“Š Materials And Construction
Q. The increase in hardness of metal due to its cold working is termed as the __________ hardening.
  • (A) Flame
  • (B) Induction
  • (C) Age
  • (D) Work
πŸ’¬ Discuss
βœ… Correct Answer: (D) Work
πŸ“Š Materials And Construction
Q. Lead alone is not used in storing equipment, because it
  • (A) Is very costly
  • (B) Corrodes easily
  • (C) Is having low creep strength
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (C) Is having low creep strength
πŸ“Š Materials And Construction
Q. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of
  • (A) Copper
  • (B) Nickel
  • (C) Brass
  • (D) Stainless steel
πŸ’¬ Discuss
βœ… Correct Answer: (A) Copper
πŸ“Š Materials And Construction
Q. The material of construction of pressure mills used for squeezing out the juice from sugar cane is
  • (A) Stainless steel
  • (B) Cast iron
  • (C) Mild steel
  • (D) Monel
πŸ’¬ Discuss
βœ… Correct Answer: (B) Cast iron
πŸ“Š Materials And Construction
Q. Which of the following has the least carbon percentage?
  • (A) Low carbon steel
  • (B) Mild steel
  • (C) Wrought iron
  • (D) White cast iron
πŸ’¬ Discuss
βœ… Correct Answer: (C) Wrought iron

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