MHT CET 2025 Chemistry question

Which from following is nonconductor of electricity?

(A)Solid sodium chlorideCorrect
(B)Aqueous potassium chloride
(C)Graphtie (s)
(D)Copper metal (s)

Answer: (A)

Solution

Electrical conduction needs mobile charge carriers. Solid NaCl is an ionic crystal in which and ions are fixed in the lattice and there are no free electrons, so it does not conduct, option (A); it conducts only when molten or

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Question ID VK-102370