| Date | May 2019 | Marks available | 3 | Reference code | 19M.2.SL.TZ0.3 |
| Level | SL | Paper | 2 | Time zone | no time zone |
| Command term | Explain | Question number | 3 | Adapted from | N/A |
Question
Explain why end-of-pipe technologies may not be the most effective strategy to reduce pollution.
Markscheme
end-of pipe technologies only focus on reducing pollutants at the end of a process ✓
however pollutants may still be released during the production process ✓
strategies (system level solutions) that capture the pollutants earlier in the production process can result in less pollutants being emitted overall ✓
end-of pipe technologies only focus on reducing pollutants at the end of a process ✓
different types of pollutants can be released during the manufacturing process ✓
that may not be addressed/eliminated with one single solution ✓
Award [1] for each of three distinct points in an explanation of why end-of-pipe technologies may not be the most effective strategy to reduce pollution of up to [3 max].
Answer in brackets is not required to award the mark
Do not award marks across clusters
Examiners report
Straightforward question but only a few candidates obtained full marks. Candidates showed a poor depth of understanding of the concept beyond it occurring at the end of a process. The markscheme addressed the end of a manufacturing process, not just any process, which may have caused candidates to perform poorly in this question. That said, a reasonable number still achieved 1-2 marks.
