Chemical Process
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like

High cost
Easy poisoning tendency
All of these
Fragile nature

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Chemical Process
Zeolite is a/an

Catalyst used in shift conversion
Abrasive material
Naturally occuring clay which is capable of exchanging cations
None of these

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Chemical Process
Fusel oil is a/an

Essential oil
Extract from medicinal herbs
Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)
None of these

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