Chemistry 0620 · IGCSE · Alkanes

Alkanes — practice question

Gasoline acts as fuel for cars, and it is made up of a mixture of hydrocarbons.
(a)[1]

State the raw material from which gasoline is derived.

(b(i))[3]

What does the term saturated hydrocarbon mean?

(b(ii))[1]

Which homologous series does heptane belong to?

(b(iii))[2]

State two characteristics of a homologous series.

(b(iv))[2]

Complete the equation for the complete combustion of heptane. $\text{C}_7\text{H}_{16} + \ldots\ldots\text{O}_2 \rightarrow \ldots\ldots + \ldots\ldots$

(c(i))[1]

Name one environmental problem caused by oxides of nitrogen released into the air.

(c(ii))[3]

Explain how carbon monoxide and oxides of nitrogen are produced in car engines.

(c(iii))[1]

State one harmful effect of carbon monoxide on human health.

(c(iv))[3]

Describe and explain how catalytic converters remove oxides of nitrogen from car engine exhaust gases. A chemical equation may be included in your response.

(d(i))[1]

State the name of isomer A.

(d(ii))[2]

What does the term structural isomers mean?

(d(iii))[3]

Give the conditions needed for the reaction and draw the structures of two possible products, one organic and one inorganic.

Worked solution & mark scheme

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