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Which type of glass is used in the manufacture of artificial gems, bulbs, lenses, etc?(a) Soda-lime glass(b) Special glass(c) Potash-lead glass(d) Common glass |
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Answer» Correct answer is (c) Potash-lead glass Best explanation: Potash-lead glass is a mixture of potassium silicate and lead silicate. It possesses a bright lustre and has a great refractive power, hence it is used in the manufacture of artificial gems, bulbs, lenses, etc. |
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