Q.1
In an iron thermit, how many moles of aluminium reacts with three moles of iron oxide to give nine moles of iron?
  • a) 6
  • b) 7
  • c) 8
  • d) 9
Q.2
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers2.jpg
  • a) Sand plug
  • b) Crucible
  • c) Wax pattern
  • d) Slag basin
Q.3
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers3.jpg
  • a) Sand plug
  • b) Crucible
  • c) Wax pattern
  • d) Slag basin
Q.4
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers4.jpg
  • a) Riser
  • b) Workpiece
  • c) Runner
  • d) Wax pattern
Q.5
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers5.jpg
  • a) Riser
  • b) Workpiece
  • c) Runner
  • d) Wax pattern
Q.6
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers6.jpg
  • a) Riser
  • b) Workpiece
  • c) Runner
  • d) Wax pattern
Q.7
In the given figure of thermit welding apparatus, what does the question mark represents which part?
Questioncasting-forming-welding-ii-questions-answers7.jpg
  • a) Riser
  • b) Runner
  • c) Sand plug
  • d) Preheating
Q.8
After the achievement of welding temperature, electrical connections are established to complete the weld.
  • a) True
  • b) False
Q.9
What is the magnitude of temperature produced in a thermit reaction?
  • a) 2500°C
  • b) 3000°C
  • c) 3500°C
  • d) 4000°C
Q.10
Thermit welding is used for making rail tracks.
  • a) True
  • b) False
0 h : 0 m : 1 s