Petroleum Refining and Petrochemicals MCQs 2026

Hydrotreating removes

1. A only sodium chloride from drinking water ✓
2. B only CO2 from flue gas post-combustion only here ✓
3. C only sand from river ✓
4. D sulfur, nitrogen and metals using H2 ✓

Catalytic cracking (FCC) increases

1. A asphalt only without conversion ✓
2. B coke zero always ✓
3. C methane only ✓
4. D gasoline yield from heavy gas oil ✓

API gravity of crude oil is

1. A higher for heavier crude always ✓
2. B independent of composition ✓
3. C higher for lighter crude ✓
4. D equal to viscosity ✓

Reforming improves

1. A pour point of wax only ✓
2. B octane number of naphtha via isomerization and dehydrogenation ✓
3. C ash in coal ✓
4. D concrete strength ✓

Atmospheric distillation column top product is typically

1. A vacuum residue only ✓
2. B light naphtha and gases ✓
3. C coke only ✓
4. D lubricating oil only ✓