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The insulating materials resist degradation by stability against chemical reaction over ________

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in Engineering Material & Metallurgy by (773k points)
The insulating materials resist degradation by stability against chemical reaction over ________

(a) Temperature and oxygen

(b) Temperature and pressure

(c) Pressure and density

(d) Oxygen and pressure

I had been asked this question in final exam.

Query is from Properties of Insulation topic in portion Magnetic & Insulating Materials of Engineering Material & Metallurgy

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Right option is (a) Temperature and oxygen

To explain: Oxygen and moisture cause degradation in insulating materials. This can be overcome by the resistance to chemical reaction over temperature and with oxygen. Thermal and oxidation stability are two important chemical properties of insulating materials.

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