Quelpr
1 markWater and Land Pollution

CAPE Environmental Science Unit 2 · 2018 · Paper 2 · Question 6(b)(i)

A student conducted an experiment to test whether heavy metals leach from incinerator ash used in road paving. 100 mL of distilled water was poured over 100 g of incinerator ash (Bottle A) and 100 g of clean sand (Bottle B), and the filtrate was analysed (Table 4).

What is the hypothesis of this experiment?

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 6(a)(i)Explain the method of waste minimization demonstrated by Process A in Figure 4.[3 marks]
  2. 6(a)(ii)Discuss TWO advantages and TWO disadvantages of implementing the waste minimization method demonstrated by Process A.[8 marks]
  3. 6(b)(ii)Why is Bottle B included in the experiment?[2 marks]
  4. 6(b)(iii)What conclusion should be drawn from the results of this experiment? Justify your answer.[3 marks]
  5. 6(c)List THREE heavy metal pollutants, other than arsenic, cadmium and chromium.[3 marks]

More practice: the rest of this paper · more Water and Land Pollution questions · all CAPE Environmental Science Unit 2 past papers