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MCQs

Total Questions : 1977 | Page 11 of 198 pages
Question 101. Ceramic recuperators are generally made of
  1.    Silicon carbide
  2.    Calcium carbide
  3.    Fireclay bricks
  4.    High alumina bricks
 Discuss Question
Answer: Option A. -> Silicon carbide
Question 102. Perspex is nothing but
  1.    Acrylic sheet
  2.    An elastomer
  3.    An alloy of lead and tin
  4.    Aluminium foil clad with bakelite
 Discuss Question
Answer: Option A. -> Acrylic sheet
Question 103. 'Hypersil' is a __________ steel.
  1.    High speed
  2.    Silicon
  3.    Molybdenum
  4.    Tungsten
 Discuss Question
Answer: Option B. -> Silicon
Question 104. Pick out the wrong statement.
  1.    Alloys are harder than their component elements
  2.    Presence of silicon in steel decreases its electrical resistance
  3.    Karbate is an acid resistant material of construction
  4.    Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100°C
 Discuss Question
Answer: Option B. -> Presence of silicon in steel decreases its electrical resistance
Question 105. Phenol is not shipped in
  1.    Nickel lined steel tank cars
  2.    Galvanised or tin lined drums
  3.    Boxed glass carboys
  4.    Cast iron containers
 Discuss Question
Answer: Option D. -> Cast iron containers
Question 106. Plastics are
  1.    Used in very high temperature applications
  2.    Non-biodegradable
  3.    Not suitable for drainage pipe manufacture
  4.    All of the above
 Discuss Question
Answer: Option B. -> Non-biodegradable
Question 107. Invar used in thermocouples is an alloy of nickel and
  1.    Iron
  2.    Copper
  3.    Chromium
  4.    Lead
 Discuss Question
Answer: Option A. -> Iron
Question 108. Liquid ammonia is shipped in __________ containers.
  1.    Steel
  2.    Aluminium
  3.    Glass
  4.    Lead lined
 Discuss Question
Answer: Option C. -> Glass
Question 109. Which of the following is not a copper based alloy with nickel?
  1.    German silver
  2.    Monel metal
  3.    Inconel
  4.    Constantan
 Discuss Question
Answer: Option C. -> Inconel
Question 110. The presence of impurities in iron
  1.    Increases its melting point
  2.    Does not affect its melting point
  3.    Decreases its melting point
  4.    Makes it malleable
 Discuss Question
Answer: Option C. -> Decreases its melting point

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