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MCQs

Total Questions : 1977 | Page 29 of 198 pages
Question 281. Common house hold glass (i.e., soda-lime glass) is a/an __________ material.
  1.    Fully crystalline
  2.    Partly crystalline
  3.    Amorphous
  4.    None of these
 Discuss Question
Answer: Option B. -> Partly crystalline
Question 282. In SO₃ absorber (Contact Process), packing material used is of
  1.    Cast iron
  2.    Chemical stoneware
  3.    Karbate
  4.    Mild steel
 Discuss Question
Answer: Option B. -> Chemical stoneware
Question 283. To improve the machinability of steel, it is generally subjected to
  1.    Spheroidising
  2.    Tempering
  3.    Normalising
  4.    Annealing
 Discuss Question
Answer: Option A. -> Spheroidising
Question 284. A magnetic material becomes __________ above the Curie temperature.
  1.    Ferromagnetic
  2.    Diamagnetic
  3.    Paramagnetic
  4.    None of these
 Discuss Question
Answer: Option C. -> Paramagnetic
Question 285. In hot wire aneomometer used for gas flow measurement, the wire is normally made of
  1.    Copper
  2.    Platinum
  3.    Constantan
  4.    Chromium
 Discuss Question
Answer: Option B. -> Platinum
Question 286. Hydrochloric acid is __________ corrosive to common metals.
  1.    Least
  2.    Not
  3.    Mildly
  4.    Highly
 Discuss Question
Answer: Option D. -> Highly
Question 287. Nickel base alloys with __________ are known as monel metal.
  1.    Zinc
  2.    Tin
  3.    Copper
  4.    Molybdenum
 Discuss Question
Answer: Option C. -> Copper
Question 288. The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.
  1.    Brass for low
  2.    Nickel alloys for high
  3.    Both A & B
  4.    Aluminium for all
 Discuss Question
Answer: Option C. -> Both A & B
Question 289. The process of heating the cold pressed metallic powder is called __________ in powder metallurgy.
  1.    Precipitation
  2.    Fusion
  3.    Sintering
  4.    Agglomeration
 Discuss Question
Answer: Option C. -> Sintering
Question 290. A metallic alloy in which one of the constituent metal is __________ , is called an amalgam.
  1.    Zinc
  2.    Mercury
  3.    Lead
  4.    Tin
 Discuss Question
Answer: Option B. -> Mercury

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