Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of Options: A . &nbspSegar cones B . &nbspMuffles for muffle furnaces C . &nbspInsulating bricks D . &nbspCrucibles used for melting of high purity metals

Thoria is an expensive refractory material and is radioactive in nature. Thorium

Question

Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of

Options:

A . Segar cones

B . Muffles for muffle furnaces

C . Insulating bricks

D . Crucibles used for melting of high purity metals

Answer: Option D

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Question 10. __________ is not a single oxiderefractory.....

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