DP Chemistry (last assessment 2024)

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Question 19M.3.sl.TZ1.11c(ii)

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.sl.TZ1.11c(ii)
Level sl Paper 3 Time zone TZ1
Command term List Question number c(ii) Adapted from N/A
c(ii).
[Maximum mark: 1]
19M.3.sl.TZ1.11c(ii)

Natural gas is an energy source composed mainly of methane.

(c(ii))

List the following products, which are also obtained by fractional distillation, according to decreasing volatility: asphalt, diesel, gasoline, lubricating motor oil.

[1]

Markscheme

gasoline > diesel > lubricating motor oil > asphalt  [✔] 

 

Note: Accept products written in this order whether separated by >, comma, or nothing.

Examiners report

Again surprisingly poorly done. Firstly there appeared to be some confusion about the term “volatility” with listing in the reverse order being quite common. Secondly many seemed unaware of the nature of “asphalt” as it was the one most frequently misplaced.

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