1306Chemical EngineeringMedium
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of________?
AMuffles for muffle furnaces
BSegar cones
CInsulating bricks
DCrucibles used for melting of high purity metals
Correct answer
D. Crucibles used for melting of high purity metals
Explanation
The correct answer is Crucibles used for melting of high purity metals.