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5455. Helium is produced on commercial scale from

September 7, 2025 by Admin

Air

Natural gas

Coke oven gas

None of these

✅ The correct answer is option B.

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

5452. Type of glass used in optical work is the __________ glass.

5419. Fat splitting catalyst is

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