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Potash-lead glass is a mixture of ___________

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Potash-lead glass is a mixture of ___________

(a) Calcium silicate and potassium silicate

(b) Lead silicate and calcium silicate

(c) Sodium silicate and potassium silicate

(d) Lead silicate and potassium silicate

I had been asked this question by my college director while I was bunking the class.

Enquiry is from Glass topic in portion Glass, Lime, Clay Products & Bricks of Construction & Building Materials

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Right choice is (d) Lead silicate and potassium silicate

For explanation I would say: Potash-lead glass is a mixture of lead silicate and potassium silicate. It fuses very readily and can be easily attacked by aqueous solutions. The specific gravity of this glass is about 3-3.3.

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