Chemical Process
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

Poor oxidation stability and high gum forming tendency
Greater tendency of decomposition at elevated temperature
Hydrolysis tendency in presence of water
All of these

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Chemical Process
Zeolite is a/an

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

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