Crude oils and fuels

Question 1

Hydrocarbons

Answer 1

Compounds that contain only carbon and hydrogen atoms

Question 2

How would you describe the temperature of an oil fractionating column?

Answer 2

The top of an oil fractionating column is colder than the bottom of the column

Question 3

What happens to a liquid during its separation from a mixture by distillation?

Answer 3

Evaporation followed by condensation

Question 4

In comparison with large hydrocarbons, how would you describe small hydrocarbons?

Answer 4

More volatile

Question 5

What is the general formula for alkanes?

Answer 5

CnH2n+2

Question 6

How can alkanes be described?

Answer 6

Saturated

Question 7

Where are the most viscous hydrocarbons likely to leave the fractionating column at?

Answer 7

The bottom

Question 8

Which gas is not formed by the combustion of hydrocarbons?

Answer 8

Oxygen

Question 9

Which gas is mainly responsible for acid rain?

Answer 9

Sulfur dioxide

Question 10

What are the products of complete combustion of a hydrocarbon?

Answer 10

Carbon dioxide and water

Question 11

What can incomplete combustion produce black particles of?

Answer 11

Carbon

Question 12

What is a biofuel?

Answer 12

It comes from plant material. An example of a biofuel is bioethanol.