Question

Which substance is an electrolyte 1) CCl4 2)SiO2 3)C6H12O6 4) H2SO4

Answer 1

Electrolyte is any species which when dissolved in solvent particularly water dissociates into cations and anions. Electrolytes are conductors of electricity. In given options;

CCl₄ (Tetrachloromethane) is a covalent compound. And it doesn't dissociate to any cation or anion. So it is not electrolyte.

SiO₂ (Silicon Dioxide) is also covalent in nature and exist in giant framework. It is not electrolyte.

Glucose (C₆H₁₂O₆) is also covalent compound. And doesn't produced any ion in water, hence it is not electrolyte.

H₂SO₄ (Sulfuric acid) is Electrolyte. When it is dissolved in water it produces H⁺ and SO₄²⁻ ions as follow,

                                 H₂SO₄    →      2 H⁺ ₍aq₎    +   SO₄²⁻ ₍aq₎

Result:
               H₂SO₄ is electrolyte.