O-LevelChemistryBonding & Structure5070/11 · May/June 2022 · Q171 Mark

Compound X is sodium iodide, NaI. Compound Y is methyl methanoate, HCO2CH3. At room temperature and pressure, ......1...... solid. In aqueous solution, ......2...... electricity. Which words correctly complete gaps 1 and 2?

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Aboth X and Y are; both X and Y conduct

Bboth X and Y are; only X conducts

Conly X is; both X and Y conduct

Donly X is; only X conducts

✓ Correct answer

D: only X is; only X conducts

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 1, question 17.

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