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Which chemical composition of fiberglass is used when chemical resistance is not essential?

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Which chemical composition of fiberglass is used when chemical resistance is not essential?

(a) Fused quartz steel

(b) Borosilicate

(c) Alumina

(d) Soda lime

I have been asked this question in homework.

Query is from Teflon and Fiber Glass topic in division Miscellaneous Materials of Engineering Material & Metallurgy

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The correct option is (d) Soda lime

For explanation: Depending on the ease of melting and chemical durability, several chemical compositions are compared and chosen to make fiberglass. Fused quartz steel and borosilicate compositions provide the necessary resistance. However, when chemical resistance is not a key requirement, ordinary soda lime is used.

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