Highest melting (m.p = 3070°C) oxide refractory is Options: A . &nbspAlumina B . &nbspThoria C . &nbspZirconia D . &nbspMagnesia

Highest melting (m.p = 3070°C) oxide refractory is

Question

Highest melting (m.p = 3070°C) oxide refractory is

Options:

A . Alumina

B . Thoria

C . Zirconia

D . Magnesia

Answer: Option B

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