DP Chemistry (last assessment 2024)

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Question 19M.3.sl.TZ1.c

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

E10 is composed of 10 % ethanol and 90 % normal unleaded fuel.

Biodiesel containing ethanol can be made from renewable resources.

Suggest one environmental disadvantage of producing biodiesel from renewable resources.

[1]

Markscheme

use of «farm» land «for production»
OR
deforestation «for crop production for fuel»
OR
can release more NOx «than normal fuel on combustion»  [✔]

 

Note: Ignore any reference to cost.

Examiners report

Many students did not take into account “production from renewable resources” and answered in terms of the combustion of biodiesel, though about a third correctly identified the area of land biofuel crops require.

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