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MCQs

Total Questions : 1977 | Page 28 of 198 pages
Question 271. The addition of antimony in tin-based alloys improves its
  1.    Rupture strength and hot hardness
  2.    Impact strength and bonding strength
  3.    Deformation resistance
  4.    Wear resistance
 Discuss Question
Answer: Option C. -> Deformation resistance
Question 272. The heat treatment process applied to cold formed steel parts is
  1.    Normalising
  2.    Tempering
  3.    Artificial ageing
  4.    Solution annealing
 Discuss Question
Answer: Option D. -> Solution annealing
Question 273. The softest material just next to talc in the Mho's scale is
  1.    Quartz
  2.    Gypsum
  3.    Feldspar
  4.    Fluorite
 Discuss Question
Answer: Option B. -> Gypsum
Question 274. Which of the following undergoes granular fracture?
  1.    Wrought iron
  2.    Steel
  3.    Cast iron
  4.    None of these
 Discuss Question
Answer: Option B. -> Steel
Question 275. __________ can replace tungsten in high speed steel,
  1.    Chromium
  2.    Vanadium
  3.    Cobalt
  4.    Molybdenum
 Discuss Question
Answer: Option D. -> Molybdenum
Question 276. Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?
  1.    Silicon steel
  2.    Chromium steel
  3.    Molybdenum steel
  4.    None of these
 Discuss Question
Answer: Option A. -> Silicon steel
Question 277. Steel tower used for the storage of oleum
  1.    Is lined with lead
  2.    Need not be lined
  3.    Is lined with rubber
  4.    Is lined with acid-proof bricks
 Discuss Question
Answer: Option B. -> Need not be lined
Question 278. Iron alloyed with carbon upto 2% is called
  1.    Pig iron
  2.    Wrought iron
  3.    High carbon steel
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 279. A suitable material of construction to use with fuming sulphuric acid is
  1.    Carbon steel
  2.    Stainless steel type 304
  3.    Nickel
  4.    Monel
 Discuss Question
Answer: Option D. -> Monel
Question 280. Gas holder of a gobar (cowdung) gas plant is made of
  1.    Molybdenum stainless steel
  2.    Tin
  3.    Mild steel
  4.    Aluminium
 Discuss Question
Answer: Option C. -> Mild steel

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