Materials and Construction
The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.

Nickel alloys for high
Both A & B
Aluminium for all
Brass for low

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Materials and Construction
Hastelloy C is a good material of construction in chemical process industry, since it is

Light and resists attack by acids
Corrosion resistant to most alkalis, particularly because of its coper content
Highly corrosion resistant and is readily fabricated
Relatively inexpensive although it can be fabricated with some difficulty

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