Foundry Fluxes and Refractories MCQ

Test your knowledge with important Foundry Fluxes and Refractories MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Foundry Fluxes and Refractories MCQs on Bissoy. Bissoy App

• Refractoriness of a material should always be greater than its application temperatures.
  ক

  True

  খ

  False
• Silicon carbide is widely used as refractory material in the mould making for casting processes.
  ক

  True

  খ

  False
• Refractories are generally inorganic non-metallic materials which can resist very high temperature.
  ক

  True

  খ

  False
• Refractory materials are basically used for strengthening the casting materials used in the casting process.
  ক

  True

  খ

  False
• Which of the following devices is mainly used for thermal analysis of flux?
  ক

  Thermocouple

  খ

  Thermometer

  গ

  Thermo resister

  ঘ

  Spiral optical tube
• The fluxes used in the casting process must have low vapour pressure.
  ক

  True

  খ

  False
• What should be the melting point (in ⁰C) of flux used for mixing with aluminium casting?
  ক

  440⁰C

  খ

  555⁰C

  গ

  606⁰C

  ঘ

  660⁰C
• Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely.
  ক

  True

  খ

  False
• Which of the following materials are commonly used as flux in the casting process to prevent oxidation?
  ক

  Sodium silicate

  খ

  Lead

  গ

  Sodium chloride

  ঘ

  Sodium carbonate
• The mixing of flux in the casting material produces endothermic reaction.
  ক

  True

  খ

  False