Q
Thoria__________________?
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A
A. Has high fusion temperature (> 3000Β°c) but poor resistance to thermal shock
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B
B. Has high resistance to basic slags
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C
C. Which is expensive & radioactive, is used in crucibles for melting high purity metals
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D
D. All a., b. and c.
Correct Answer:
D. D. All a., b. and c.