Which is required in an insulating refractory ?
Correct answer: D. Neither A. nor B.
- A. High thermal conductivity
- B. Low porosity
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
An insulating refractory should have low thermal conductivity and generally high porosity to reduce heat flow. Thus, high thermal conductivity and low porosity are both contrary to the required properties.
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