A decorator compares two wall paints using life cycle assessments. One litre of paint F covers a larger area of wall than one litre of paint G. The life cycle data are given for 1 litre of each paint.
Which statement about using these data to compare the paints is correct?
The data for 1 litre give a fair comparison because the volumes are equal.
Paint F has the lower impact because it covers more wall per litre.
The area of wall covered is a value judgement, so it cannot be included.
The data should be scaled to the volumes needed to cover the same area.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.