Q. Pipes for bi-cycle frames are made of __________ steel.

  • (A) Hot rolled
  • (B) Chrome carbon
  • (C) Cold rolled
  • (D) Stainless
πŸ’¬ Discuss
βœ… Correct Answer: (C) Cold rolled

Q. Nickel and copper are the basic constituents of

  • (A) Hastelloy
  • (B) Monel metal
  • (C) German silver
  • (D) Inconel
πŸ’¬ Discuss
βœ… Correct Answer: (B) Monel metal

Q. Nickel and molybdenum are the basic constituents of

  • (A) Hastealloy
  • (B) German silver
  • (C) Inconel
  • (D) Solder
πŸ’¬ Discuss
βœ… Correct Answer: (A) Hastealloy

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

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

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

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

Q. High speed steel tools retain their hardness upto a temperature of __________ Β°C.

  • (A) 500
  • (B) 750
  • (C) 900
  • (D) 1100
πŸ’¬ Discuss
βœ… Correct Answer: (C) 900

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

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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