A-LevelChemistryNitrogen and sulfur9701/12 · Oct/Nov 2013 · Q361 Mark

Sulfur dioxide and sulfites are used in food preservation. Why are they used for this purpose? 1. They are reducing agents which slow down the oxidation of food. 2. They inhibit the growth of aerobic bacteria. 3. They react with NO2(g) converting it to NO(g).

A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

B: 1 and 2 only are correct

Oracle Prep sorts past-paper questions by topic, so you can drill Nitrogen and sulfur and see which topics are most likely to come up next.

Topic: Nitrogen and sulfur, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 2, question 36.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content