Aqueous solution of sodium chloride conducts electricity due to the presence of free . [1 mark]
A. electrons
B. ions
C. molecules
D. atoms

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Solution

The correct answer is option B. ions.

Electricity can be conducted in metals due to the availability of free electrons. Likewise, aqueous solutions can conduct electricity if there are free ions.

Here, sodium chloride ( $N a C l$ ) ionises completely to yield free ions. Thus, aqueous solution of sodium chloride conducts electricity.

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Aqueous solution of sodium chloride conducts electricity due to the presence of free . [1 mark] A. electrons B. ions C. molecules D. atoms

Aqueous solution of sodium chloride conducts electricity due to the presence of free . [1 mark]
A. electrons
B. ions
C. molecules
D. atoms