Temperature of molten pig iron (1450 C) and molten slag (1500 C) flowi – McqOptions

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1.	Temperature of molten pig iron (1450 C) and molten slag (1500 C) flowing out of a blast furnace is measured by a/an
A.	chromel-alumel thermocouple
B.	optical pyrometer
C.	radiation pyrometer
D.	either (b) or (c)
Answer» E.

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