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MCQs

Total Questions : 1977 | Page 26 of 198 pages
Question 251. Carbon percentage in medium carbon steel is around
  1.    0.1 to 0.35
  2.    0.35 to 0.5
  3.    0.8 to 1.4
  4.    1 to 1. 5
 Discuss Question
Answer: Option B. -> 0.35 to 0.5
Question 252. Addition of nickel to copper improves its
  1.    Machinability
  2.    Ductility
  3.    Strength
  4.    Hardness
 Discuss Question
Answer: Option D. -> Hardness
Question 253. __________ is not a case hardening process.
  1.    Carburising
  2.    Nitriding
  3.    Cyaniding
  4.    Annealing
 Discuss Question
Answer: Option D. -> Annealing
Question 254. Gunmetal and bronze are not corroded by the action of
  1.    Wet chlorine
  2.    Synthetic detergent solution
  3.    Hydrochloric acid (10%)
  4.    Nitric acid (< 25%)
 Discuss Question
Answer: Option B. -> Synthetic detergent solution
Question 255. Glass lined vessels are not used for handling/storing
  1.    Dilute H₂SO₄
  2.    Dilute HNO₃
  3.    Dilute HCl
  4.    Hydroflouric acid
 Discuss Question
Answer: Option D. -> Hydroflouric acid
Question 256. Pick the odd man out of the following.
  1.    Calorising
  2.    Pack carburising
  3.    Nitriding
  4.    Cyaniding
 Discuss Question
Answer: Option A. -> Calorising
Question 257. For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is
  1.    Stainless steel
  2.    Cast iron
  3.    Aluminium
  4.    Nickel
 Discuss Question
Answer: Option B. -> Cast iron
Question 258. Percentage of silver in German silver is
  1.    5
  2.    10
  3.    20
  4.    0
 Discuss Question
Answer: Option D. -> 0
Question 259. __________ iron is produced, when molten pig iron is chilled suddenly.
  1.    White cast
  2.    Grey cast
  3.    Wrought
  4.    None of these
 Discuss Question
Answer: Option A. -> White cast
Question 260. Sulphuric acid pickling tanks are lined with
  1.    Nickel
  2.    Rubber
  3.    Aluminium
  4.    Glass
 Discuss Question
Answer: Option B. -> Rubber

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