Petroleum Refinery Engineering
Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of __________ kcal/kg.

600-750
250-350
1000-1500
2000-2500

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Petroleum Refinery Engineering
Pick out the correct statement pertaining to catalytic cracking.

All of these
With increase in the reactor pressure, octane number of gasoline decreases
With increase in the reactor temperature, gasoline yield decreases for a given conversion
Percentage conversion increases with increase in the catalyst to oil ratio

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