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.

Thor

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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