Which one of the following statements about the zeolites is false ?

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They are used as cation exchangers.

They have open structure which enables them to take up small molecules.

Zeolites are aluminosilicates having three dimensional network.

None of the above.

answer is D.

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Detailed Solution

Zeolites are 3D-microporous crystalline compounds of aluminosilicates. They have an open pore-like structure containing small cavities whose diameter is nearly the same as all zeolites. Through these cavities, zeolites can exchange or pass small ions or molecules.

Cation exchanges are those materials that can exchange their cations with the cations that are present in the solutions. Zeolites are important inorganic cation exchangers and are used for removing the hardness of water.

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