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The chemical formula of Permutit is ____________

(a) SiOAl2O3Na2O

(b) SiO2Al2O3Na2O

(c) SiO2Al2O3NaO

(d) SiO3Al2O3Na2O

I have been asked this question in quiz.

I want to ask this question from Zeolite Process in division Water Softening of Environmental Engineering

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Right choice is (b) SiO2Al2O3Na2O

To explain I would say: The chemical formula of Permutit is SiO2Al2O3Na2O. The increase in the value of SiO2 increases its resistance to aggressive attacks.

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