Casting Foundry Fluxes Refractories Online Exam Quiz
Casting Foundry Fluxes Refractories GK Quiz. Question and Answers related to Casting Foundry Fluxes Refractories. MCQ (Multiple Choice Questions with answers about Casting Foundry Fluxes Refractories
What should be the melting point (in ?C) of flux used for mixing with aluminium casting?
Options
A : 440?C
B : 555?C
C : 606?C
D : 660?C
Which of the following materials are commonly used as flux in the casting process to prevent oxidation?
Options
A : Sodium silicate
B : Lead
C : Sodium chloride
D : Sodium carbonate
Which of the following devices is mainly used for thermal analysis of flux?
Options
A : Thermocouple
B : Thermometer
C : Thermo resister
D : Spiral optical tube
Refractories are generally inorganic non-metallic materials which can resist very high temperature.
Options
A : True
B : False
C :
D :
Refractoriness of a material should always be greater than its application temperatures.
Options
A : True
B : False
C :
D :
The fluxes used in the casting process must have low vapour pressure.
Options
A : True
B : False
C :
D :
Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely.
Options
A : True
B : False
C :
D :
Refractory materials are basically used for strengthening the casting materials used in the casting process.
Options
A : True
B : False
C :
D :
Silicon carbide is widely used as refractory material in the mould making for casting processes.
Options
A : True
B : False
C :
D :
The mixing of flux in the casting material produces endothermic reaction.
Options
A : True
B : False
C :
D :
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