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The shells are generally made of?(a) Copper(b) Iron(c) Wood(d) CeramicsI have been asked this question during an online interview.This question is from Packing Types and Objectives in section Packing Design and Operation of Distillation Design

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Right choice is (d) Ceramics

To explain: The CERAMIC SHELLS are generally used that to having a bell and spigot joint are used in highly CORROSIVE services, such as HNO3 by DISTILLATION.



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