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JEE Main Chemistry question

ChemistryElectrochemistryJEE Main

How many of the following species conduct electricity? Fused NaCl, (solid), aqueous HCl solution, aqueous urea solution, diamond, graphite, , aqueous glucose solution, NaCl (solid), Ag metal

Answer: 4

Solution

Fused NaCl (mobile ions), aqueous HCl solution (strong electrolyte), graphite (delocalised electrons between layers) and Ag metal (free electrons)

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Question ID VK-144179