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MCQs

Total Questions : 1977 | Page 196 of 198 pages
Question 1951. White metal is an alloy of
  1.    Copper, tin and zinc
  2.    Lead, tin and cadmium
  3.    None of these
  4.    Copper and lead
 Discuss Question
Answer: Option C. -> None of these
Question 1952. When iron is rusted, it is
  1.    Reduced
  2.    None of these
  3.    Oxidised
  4.    Converted to a fine powder
 Discuss Question
Answer: Option C. -> Oxidised
Question 1953. White cast iron is not
  1.    Strong and hard
  2.    Brittle
  3.    Whitish in color
  4.    Malleable
 Discuss Question
Answer: Option D. -> Malleable
Question 1954. Post weld heat treatment is done by
  1.    Solution annealing
  2.    Tempering
  3.    Normalising
  4.    Stress relieving
 Discuss Question
Answer: Option D. -> Stress relieving
Question 1955. Which of the following is the hardest material?
  1.    Quartz
  2.    Flourite
  3.    Topaz
  4.    Corrundum
 Discuss Question
Answer: Option D. -> Corrundum
Question 1956. Work hardening of a material
  1.    Increases its ductility
  2.    Does not affect its ductility
  3.    Decreases its tensile strength
  4.    Decreases its ductility
 Discuss Question
Answer: Option D. -> Decreases its ductility
Question 1957. Which of the following is the softest material?
  1.    Flourite
  2.    Quartz
  3.    Calcite
  4.    Corrundum
 Discuss Question
Answer: Option C. -> Calcite
Question 1958. Wrought iron is
  1.    An alloy of iron, chromium & carbon
  2.    High carbon iron
  3.    Highly resistance to acid corrosion
  4.    Malleable & ductile; and hence is used for chain links, hooks & couplings
 Discuss Question
Answer: Option D. -> Malleable & ductile; and hence is used for chain links, hooks & couplings
Question 1959. Wood is corroded by
  1.    Chlorine (dry or wet)
  2.    SO₂ (dry or wet)
  3.    All of these
  4.    Hydrochloric acid
 Discuss Question
Answer: Option C. -> All of these
Question 1960. Creep is not exhibited at low temperature by
  1.    Plastics
  2.    Rubber
  3.    Lead
  4.    Acrylics
 Discuss Question
Answer: Option C. -> Lead

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