JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which one of the following statements about the zeolites is false? [Manipal 2007]

(A)They are used as cation exchangers.
(B)They have open structure which enables them to take up small molecules.
(C)Zeolites are aluminosilicates having three dimensional network.
(D)Some of the units are replaced by and ions in zeolites.Correct

Answer: (D)

Solution

Zeolites are genuinely used as cation exchangers (A), have an open 3-D cage/channel structure enabling small-molecule uptake (B), and are indeed three-dimensional aluminosilicate frameworks (C) — all true. However, in zeolites it is (not

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Question ID VK-138283