AIIMS 2019 Chemistry Metallurgy MCQ Question

Option B is correct because ZrI₄ does not sublime at room temperature; it requires a high temperature of 1800 K for the conversion to pure zirconium (Zr). Sublimation refers to the transition of a substance from solid to gas without passing through a liquid phase, and since ZrI₄ does not undergo this process at room temperature, the statement is false. Options A and C are incorrect as they either misinterpret the sublimation behavior of ZrI₄ or fail to provide a definitive answer based on the information given. Option D is irrelevant as it does not apply to the context of the question.