NEET 2004 Chemistry question

Not in JEE Main or NEET syllabus

Which one of the following statements about the zeolites is false :-

(1)They have open structure which enables them to take up small molecules
(2)Zeolites are aluminosilicates having three dimensional network
(3)Some of units are replaced by and ions in zeolitesCorrect
(4)They are used as cation exchangers.

Answer: (3)

Solution

Zeolites are three-dimensional aluminosilicate frameworks with an open (porous) structure that can adsorb small molecules, and the exchangeable cations (, ) in the pores make them cation exchangers (used e.g. for softening hard

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Question ID VK-089424