πŸ“Š Materials And Construction
Q. Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel
  • (A) Rubber
  • (B) Monel
  • (C) Glass
  • (D) Nickel
πŸ’¬ Discuss
βœ… Correct Answer: (C) Glass
πŸ“Š Materials And Construction
Q. Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
  • (A) 1.5-2
  • (B) 3.5-4.5
  • (C) 7-9
  • (D) 12-14
πŸ’¬ Discuss
βœ… Correct Answer: (D) 12-14
πŸ“Š Materials And Construction
Q. Hydrochloric acid is stored in a__vessel.
  • (A) Lead lined steel
  • (B) Rubber lined steel
  • (C) Stainless steel
  • (D) Cast iron
πŸ’¬ Discuss
βœ… Correct Answer: (B) Rubber lined steel
πŸ“Š Materials And Construction
Q. A material is called 'ductile', if it can be
  • (A) Drawn into wires
  • (B) Hammered to a thin sheet
  • (C) Fractured without deformation
  • (D) Made lustrous by heating it
πŸ’¬ Discuss
βœ… Correct Answer: (A) Drawn into wires
πŸ“Š Materials And Construction
Q. Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making
  • (A) Nuts
  • (B) Bolts
  • (C) Chiesels
  • (D) Studs
πŸ’¬ Discuss
βœ… Correct Answer: (C) Chiesels
πŸ“Š Materials And Construction
Q. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of
  • (A) Tungsten, vanadium and chromium
  • (B) Tungsten, chromium and vanadium
  • (C) Vanadium, chromium and tungsten
  • (D) Chromium, tungsten and vanadium
πŸ’¬ Discuss
βœ… Correct Answer: (B) Tungsten, chromium and vanadium

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