Which of the following statement(s) is/are correct? (i) Zeolites are good shape selective cataly...

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Which of the following statement(s) is/are correct?
(i) Zeolites are good shape selective catalysts because of their honeycomb-like structures.
(ii) All zeolites are naturally occurring substance.
(iii) An important zeolite catalyst used in the petroleum industry in ZSM-5.
(a) (i) only
(b) (ii) only
(c) (i) and (iii)
(d) (ii) and (iii)
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