AIPMT 2004 Physics and Chemistry Paper

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Question : 90 of 100

Marks: +1, -0

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

They have open structure which enables them to take up small molecules
Zeolites are aluminosilicates having three dimensional network
Some of the SiO44− units are replaced by AlO45− and AlO69− ions in zeolites
They are used as cation exchangers.

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