Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?
Correct answer: C. Pyrex
- A. Flint
- B. Soda
- C. Pyrex
- D. Potash
Explanation
Pyrex is borosilicate glass, whose low thermal expansion reduces cracking during temperature changes and whose composition gives good chemical resistance. Flint and soda glasses are less suitable for high-quality laboratory ware.
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