A-LevelChemistryElectrochemistryOct/Nov 2017Paper 1 Q81 Mark
Which statement is always correct for an oxidation reaction?
AIt involves the gain of oxygen by an element.
BFor one reactant to be oxidised a different reactant must be reduced.
CThe element or ion being oxidised will gain electrons.
DThe oxidation number of the element being oxidised will increase.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of electrochemistry within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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