Question

The freezing of biotechnology products like vaccines require ________ freezing system.
i) Helium ii) Nitrogen iii) Ammonia iv) Chlorine

TNSCERT Class 10 Physics Ch 15 Laws of Motivation and Gravitation

Answer 1

The freezing of biotechnology products like vaccines require Nitrogen freezing system. Answer.........
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Answer 2

The freezing of biotechnology products like vaccines require Nitrogen freezing system.
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ii) Nitrogen