Question 1

What is crude oil?

Accepted Answer

Unprocessed oil

Answer

Refined oil

Answer

Synthetic fuel

Answer

Natural gas

Question 2

Why is crude oil an exceptionally valuable resource?

Accepted Answer

It provides us with organic compounds used as fuels and chemicals

Answer

It is used for making plastics

Answer

It is easy to extract from the ground

Answer

It is a renewable resource

Question 3

What is the main purpose of fractional distillation?

Accepted Answer

To separate the different fractions of hydrocarbons in crude oil

Answer

To convert crude oil into plastic

Answer

To extract natural gas from crude oil

Answer

To refine crude oil into gasoline

Question 4

What determines the boiling point of a molecule in crude oil?

Accepted Answer

The length of the molecule's carbon chain

Answer

The density of the molecule

Answer

The color of the molecule

Answer

The temperature of the environment

Question 5

Where in the fractionating column are long chain molecules with high boiling points collected?

Accepted Answer

At the bottom

Answer

At the top

Answer

They are not collected

Answer

In the middle

Question 6

What is the purpose of the bubble caps in the fractionating column?

Accepted Answer

To slow down the rate of rising vapour

Answer

To collect the vapours

Answer

To increase the temperature

Answer

To prevent condensation

Question 7

Where are hydrocarbons with similar boiling points collected in the fractionating column?

Accepted Answer

In the same tray

Answer

At the top of the column

Answer

In separate trays

Answer

At the bottom of the column

Question 8

What is one important use of petrol, a fraction obtained through fractional distillation?

Accepted Answer

As a fuel for cars

Answer

As an aircraft fuel

Answer

To lay roads and on roofs

Answer

In the manufacture of chemicals

Question 9

What is the purpose of fractional distillation in relation to crude oil?

Accepted Answer

To separate crude oil into useful fractions with similar boiling points

Answer

To remove impurities from crude oil

Answer

To convert crude oil into natural gas

Answer

To refine crude oil into a single compound

Question 10

Where are small chain molecules collected in the fractionating column?

Accepted Answer

At the top

Answer

In the middle

Answer

At the bottom

Answer

They are not collected

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