Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is...

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Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.

A. 1520

B. 1630

C. 1670

D. 1730

Answer: Option D

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