IChem Midterm Quiz 1

Which fuel oil type does NOT require pre-heating before use?

• Heavy Fuel Oil (HFO)

• Marine Diesel Oil (MDO)

• Residual Fuel Oil

• Low Sulfur Fuel Oil (LSFO)

Which alternative fuel produces the lowest CO₂ emissions among fossil fuels?

• Hydrogen

• LNG

• Methanol

• Biofuel

What is the main environmental concern with Heavy Fuel Oil (HFO)?

• High oxygen content

• High sulfur content

• Low viscosity

• Low flashpoint

What does CCAI stand for?

• Carbon Combustion Aromaticity Index

• Calculated Carbon Aromaticity Index

• Chemical Combustion Analysis Index

• Catalytic Carbon Ash Index

Which property of fuel indicates the lowest temperature which fuel ceases to flow?

Which fuel is classified as a distillate fuel oil?

• HFO

• MDO

• Residual oil

• Crude oil

What is the main risk of water content in fuel oil?

• Improved combustion

• Increased flashpoint

• Corrosion and energy loss

• Reduced viscosity

Which of the following is NOT an alternative fuel for ships?

• LNG

• LPG

• Coal

• Hydrogen

What is the purpose of Emission Control Areas (ECAs)?

• To increase fuel consumption

• To reduce SOx and NOx emissions

• To allow unlimited sulfur emissions

• To promote fossil fuel use

Which property measures a fuel's resistance to flow?