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5533. The main component of pyrex glass is

September 7, 2025 by Admin

Zinc

Lead

Boron

Celenium

✅ The correct answer is option B.

Categories Chemical Engineering, Chemical Process MCQs, Engineering Tags Chemical Engineering MCQs, Chemical Process MCQs, Engineering MCQs

5569. Main constituents of cotton fiber is

5535. Silicone is a/an

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