CO2 Process MCQ

Test your knowledge with important CO2 Process MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more CO2 Process MCQs at Bissoy

• Co2 moulding is a kind of sand moulding, but it is not economical than the green sand moulding.
  ক

  True

  খ

  False
• Moisture from the mould can be removed by using of dryer or heater in Co2 moulding.
  ক

  True

  খ

  False
• Co2 moulding process is an ideal process, where speed and flexibility is the prime requirement.
  ক

  True

  খ

  False
• Which of the following additives are added to the sand in Co2 moulding for the improvement in collapsibility of the sand?
  ক

  Copper oxide

  খ

  Wood flour

  গ

  Aluminium oxide

  ঘ

  Oil
• It is very safe to use Co2 in Co2 moulding, so it eliminates the use of any shielding apparatus.
  ক

  True

  খ

  False
• Sometimes over-gassing can cause the sticking of pattern to the mould in Co2 moulding.
  ক

  True

  খ

  False
• Additives can be used for the non-ferrous application to avoid the poor collapsibility of the mould.
  ক

  True

  খ

  False
• How much time (in a minute) is usually required for the passing of Co2 through the mould?
  ক

  One

  খ

  Two

  গ

  Five

  ঘ

  Seven
• Continuous passing of Co2 through the mould can decrease the strength of mould and results in a weak mould.
  ক

  True

  খ

  False
• How much percentage of sodium silicate (Na2SiO3) is added to the sand mixture in Co2 moulding?
  ক

  0 to 2 %

  খ

  2 to 6 %

  গ

  6 to 10 %

  ঘ

  10 to 14 %
• Co2 moulding is mainly used for the increase in strength and hardness of the moulds and cores.
  ক

  True

  খ

  False
• Which of the following moulds or moulding is also known as sodium silicate process.
  ক

  Shell moulding

  খ

  Permanent moulding

  গ

  Slush moulding

  ঘ

  Co2 moulding