O-LevelChemistryBonding & Structure5070/12 · Oct/Nov 2019 · Q81 Mark

Which statement about electrical conductivity is correct?

ACovalent compounds, such as glucose, conduct when molten or dissolved in water.

BDilute acids, such as sulfuric acid, conduct because all the ions are free to move.

CIonic compounds, such as sodium chloride, conduct due to movement of electrons.

DMetals, such as copper, conduct due to movement of positive ions.

✓ Correct answer

B: Dilute acids, such as sulfuric acid, conduct because all the ions are free to move.

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 2, question 8.

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