Q13. Which of the following are Refractory ceramics?

1. Tantalum carbide

2. Silver Copper Telluride (AgCuTe)

3. Sodium Nitrite

4. Hafnium carbide (HfC)

Which of the statements are correct?

a) Only 1 and 2

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b) Only 1

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c) Only 1 and 4

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d) 1, 2 and 3

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Solution

The correct option is C
c) Only 1 and 4

Tantalum carbide (TaC) and hafnium carbide (HfC) are refractory ceramics, meaning they are extraordinarily resistant to heat.

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