AIIMS 2018 Chemistry Temperature Effects Assertion Reason Question

The assertion is true because the conductivity of metals decreases with increasing temperature due to increased lattice vibrations that hinder electron flow, while the conductivity of electrolytic solutions increases as higher temperatures enhance ion mobility. However, the reason is false; electrons in metals are not tightly held but are part of a "sea of electrons" that allows for conductivity. Options A and B are incorrect because they assert that the reason correctly explains the assertion, which it does not, and option D is incorrect as both statements are not false.