Petroleum Refinery Engineering
Which of the following is the most widely used cracking process in oil refineries?

T.C.C. moving bed process
Dubbs process
Houdry's fixed bed process
Fluidised bed catalytic cracking process

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Petroleum Refinery Engineering
Asphalts are

. Low molecular weight & low boiling point compounds present in petroleum
Desirable in catalytic cracking feedstock, because they produce coke
Readily oxidisable and form carbonaceous sludge
All of these

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