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MCQs

Total Questions : 1977 | Page 23 of 198 pages
Question 221. Pipes for bi-cycle frames are made of __________ steel.
  1.    Hot rolled
  2.    Chrome carbon
  3.    Cold rolled
  4.    Stainless
 Discuss Question
Answer: Option C. -> Cold rolled
Question 222. Nickel and copper are the basic constituents of
  1.    Hastelloy
  2.    Monel metal
  3.    German silver
  4.    Inconel
 Discuss Question
Answer: Option B. -> Monel metal
Question 223. Nickel and molybdenum are the basic constituents of
  1.    Hastealloy
  2.    German silver
  3.    Inconel
  4.    Solder
 Discuss Question
Answer: Option A. -> Hastealloy
Question 224. Nickel as a material of construction
  1.    Is used as an alloying element for both ferrous & non-ferrous alloys
  2.    Is paramagnetic below 415° C (its Curie temperature)
  3.    Dimagnetic
  4.    Has a body centred cubic (bcc) crystal lattice structure
 Discuss Question
Answer: Option A. -> Is used as an alloying element for both ferrous & non-ferrous alloys
Question 225. The increase in hardness of metal due to its cold working is termed as the __________ hardening.
  1.    Work
  2.    Age
  3.    Induction
  4.    Flame
 Discuss Question
Answer: Option A. -> Work
Question 226. Balls in a ball mill are usually made of
  1.    Steel
  2.    Cast iron
  3.    Stainless steel
  4.    Bronze
 Discuss Question
Answer: Option A. -> Steel
Question 227. Concentrated HCl at 30°C can be stored in a vessel made of
  1.    PTFE and porcelain
  2.    Cast iron and aluminium
  3.    Stainless steel and high silicon cast iron
  4.    None of these
 Discuss Question
Answer: Option A. -> PTFE and porcelain
Question 228. White cast iron as compared to grey cast iron is
  1.    More durable
  2.    Very brittle
  3.    Very hard
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 229. Brine (15% concentration) can be stored in a vessel made of
  1.    Monel
  2.    Karbate
  3.    Cast iron
  4.    None of these
 Discuss Question
Answer: Option A. -> Monel
Question 230. A bearing metal should not have
  1.    Enough plasticity
  2.    Low thermal conductivity
  3.    Low co-efficient of friction
  4.    High toughness
 Discuss Question
Answer: Option B. -> Low thermal conductivity

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