CAIE A-Level Chemistry AS 14.1.4 Suggest How Cracking Can Be Used to Obtain Questions

Practise explaining why heavy crude-oil fractions are cracked, identifying suitable products and conditions, and linking lower-relative-mass alkanes and alkenes to useful applications in CAIE 9701 questions.

Exam points

explain that cracking breaks heavier crude-oil hydrocarbons into shorter-chain alkanes and alkenes with greater usefulness or demand
select plausible cracking products and conditions, using carbon and hydrogen conservation for lower-relative-mass products
connect produced alkenes with polymer manufacture and produced alkanes with fuel uses when interpreting cracking outcomes

[Maximum number: 1]

The hydrocarbon $\mathrm{C}_{17} \mathrm{H}_{36}$ can be cracked.
Which compound is the least likely to be produced in this reaction?

$\mathrm{C}_{3} \mathrm{H}_{8}$

$\mathrm{C}_{4} \mathrm{H}_{8}$

$\mathrm{C}_{8} \mathrm{H}_{16}$

$\mathrm{C}_{16} \mathrm{H}_{34}$

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CAIE A-Level Chemistry AS 14.1.4 Suggest How Cracking Can Be Used to Obtain Questions question 1