Q.
Which statement about zeolite is false ?
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a
They are used as cation exchanger
b
They have open structure which enables them to take up small molecules
c
Zeolites are alumino silicates having three dimensional networks
d
Some of the SiO44- units are replaced by AlO45- and AlO89- ions in zeolites
answer is D.
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Detailed Solution
1, 2 and 3 are characteristics of zeolites.If ‘Al’ atoms replace few silicon atoms in three dimensional network of SiO2 over all structure known as alumino silicate (Zeolite)
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