Crude Oil and Hydrocarbons Quiz

What is crude oil primarily composed of?

• Water and minerals

• Hydrogen and oxygen

• Hydrogen and carbon

• Nitrogen and sulfur

What is the general formula for alkanes?

• CnH2n

• CnH2n+2

• CnH2n-2

• CnH2n+1

Which of the following is NOT one of the first four alkanes?

• Methane

• Ethane

• Propane

• Pentane

What process is used to separate hydrocarbons in crude oil into fractions?

• Filtration

• Distillation

• Fractional distillation

• Evaporation

What is the primary source of crude oil?

• Ancient forests

• Volcanic activity

• Ancient biomass of plankton

• Animal remains

What are some of the fuels produced from crude oil?

• Petrol, diesel oil, kerosene

• Natural gas, coal, wood

• Ethanol, biodiesel, hydrogen

• Solar, wind, hydroelectric

Which industry benefits from the processing of fractions to produce fuels and feedstock?

• Textile industry

• Petrochemical industry

• Food industry

• Automotive industry

How do the properties of hydrocarbons change with increasing molecular size?

• Boiling point decreases, viscosity decreases, flammability increases

• Boiling point increases, viscosity increases, flammability decreases

• Boiling point decreases, viscosity increases, flammability decreases

• Boiling point increases, viscosity decreases, flammability increases

What are the products of the complete combustion of a hydrocarbon?

• Carbon monoxide and water

• Carbon dioxide and water

• Oxygen and hydrogen

• Methane and oxygen

What is the role of carbon atoms in forming natural and synthetic carbon compounds?

• They form isolated compounds

• They form families of similar compounds

• They prevent the formation of compounds

• They dissolve in water