Q. _________ rubber is generally used for making 'O' rings used for vacuum sealings.

(A) Natural
(B) Neoprene
(C) Butadiene
(D) Nitrile

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✅ Correct Answer: (B) Neoprene

Published by Nisha Gupta ⭐ 2.32K Points at 18-May-2023 09:28 pm in Chemical Engineering Basics

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