__________are used as protecting tubes in thermocouples above 2000 F. Options: A . &nbspWrought iron B . &nbsp14% chrome iron C . &nbspNichrome D . &nbspPorcelain

__________are used as protecting tubes in thermocouples above 2000 F.

Question - __________are used as protecting tubes in thermocouples above 2000 F.

Options:

A . Wrought iron

B . 14% chrome iron

C . Nichrome

D . Porcelain

Answer: Option D
Answer: (d).Porcelain

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