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MCQs

Total Questions : 1977 | Page 3 of 198 pages
Question 21. __________ does not contain copper as an alloying element,
  1.    Nichrome
  2.    Manganin
  3.    Perminivar
  4.    Monel metal
 Discuss Question
Answer: Option A. -> Nichrome
Question 22. Copper has very low
  1.    Malleability
  2.    Ductility
  3.    Tensile strength
  4.    Thermal & electrical conductivity
 Discuss Question
Answer: Option C. -> Tensile strength
Question 23. Bearings subjected to light load are made of
  1.    White metal
  2.    Phosphorous bronze
  3.    Monel
  4.    Silicon bronze
 Discuss Question
Answer: Option B. -> Phosphorous bronze
Question 24. Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and
  1.    Moving mercury and graphite
  2.    Graphite and moving mercury
  3.    Moving mercury and carbon
  4.    Moving mercury and crimped steel wire
 Discuss Question
Answer: Option B. -> Graphite and moving mercury
Question 25. In the kraft (sulphate) process for the paper manufacture, the digestor is made of
  1.    Cast iron
  2.    Stainless steel
  3.    Karbate carbon
  4.    Wrought iron
 Discuss Question
Answer: Option B. -> Stainless steel
Question 26. Which of the following is produced by addition polymerisation?
  1.    Polybutadiene
  2.    Phenol formaldehyde
  3.    Urea-formaldehyde
  4.    Dacron
 Discuss Question
Answer: Option A. -> Polybutadiene
Question 27. Ammonium chloride solution is stored/ treated in __________ vessels/pipes.
  1.    Plain carbon steel
  2.    Stainless steel
  3.    Rubber or durmet-20 lined
  4.    Lead
 Discuss Question
Answer: Option C. -> Rubber or durmet-20 lined
Question 28. Evaporators used in caustic soda recovery and production plant are made of
  1.    Monel metal
  2.    Gun metal
  3.    Wood metal
  4.    Babbit metal
 Discuss Question
Answer: Option A. -> Monel metal
Question 29. Wood metal is not used for making
  1.    Soft solder
  2.    Casting for dental work
  3.    Storage tank for storing brine and caustic soda
  4.    Fusible safety plug for pressure cooker
 Discuss Question
Answer: Option C. -> Storage tank for storing brine and caustic soda
Question 30. Silicon percentage in acid resistant cast iron is about
  1.    4
  2.    8
  3.    14
  4.    20
 Discuss Question
Answer: Option C. -> 14

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