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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pb163

Select the correct statement(s) about zeolites.

  1. AThey are microporous aluminosilicates.
  2. BThey can act as shape-selective catalysts.
  3. CThey are dense, non-porous solids.
  4. DTheir exchangeable cations can be replaced by ion exchange.

Answer: A, B, D

Zeolites are microporous aluminosilicates with cages of fixed size, giving shape selectivity (A, B true). They are porous, not dense (C false), and the charge-balancing cations are exchangeable (D true).
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