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1 markRespiration and Air Pollution

CSEC Integrated Science · 2006 · Paper 2 · Question 1(d)(ii)

The family's previous home was located close to several factories where their children suffered repeatedly from respiratory ailments. Near the beach, these ailments declined markedly.

Suggest what might have been responsible for the decline in frequency of the respiratory ailments.

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Other parts of this question

  1. 1(a)(i)Complete the word equation for the reaction: Aluminium + hydrochloric acid ->[1 mark]
  2. 1(a)(ii)Complete the word equation for the reaction: Iron + water ->[1 mark]
  3. 1(b)(i)Name the chemical process by which rusting takes place.[1 mark]
  4. 1(b)(ii)Write a word equation for the formation of rust.[1 mark]
  5. 1(b)(iii)Explain why rusting of the gate has occurred so rapidly.[2 marks]
  6. 1(c)(i)State which of the three materials is likely to have been used in the windows of the bedroom.[1 mark]
  7. 1(c)(ii)State which of the three materials is likely to have been used in the windows of the kitchen.[1 mark]
  8. 1(c)(iii)Give reasons for your answers in (c)(i) and (c)(ii).[2 marks]
  9. 1(d)(i)Suggest what might have been responsible for the respiratory ailments.[1 mark]
  10. 1(e)(i)Using the experimental results in Table 1, write the metals in order of increasing activity.[1 mark]
  11. 1(e)(ii)Y is non-reactive in hydrochloric acid. Suggest the name of ONE metal which is non-reactive in hydrochloric acid.[1 mark]
  12. 1(e)(iii)Why was the same volume (5 cm³) of hydrochloric acid added to EACH of the three metals?[1 mark]

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