O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2019 · Q231 Mark

Three statements about the elements carbon, nitrogen and sulfur are shown. 1 They are in groups next to each other in the Periodic Table. 2 Their neutron to proton ratios are all two to one. 3 They each form an acidic oxide. Which statements are correct?

A1, 2 and 3

B1 and 2 only

C1 and 3 only

D2 and 3 only

✓ Correct answer

C: 1 and 3 only

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 1, question 23.

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