Question

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: (d).either (b) or (c)

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Q. Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an

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