JEE Main 2022ChemistryGeneral Principles and Processes of Isolation of MetalsMediumMCQ

JEE Main 2022 — General Principles and Processes of Isolation of Metals Question with Solution

JEE Main 2022 (26 Jun Shift 1)

Question

Given below are two statements :

Statement I : According to the Ellingham diagram, any metal oxide with higher ΔG° is more stable than the one with lower ΔG°.

Statement II : The metal involved in the formation of oxide placed lower in the Ellingham diagram can reduce the oxide of a metal placed higher in the diagram.

In the light of the above statements, choose the most appropriate answer from the options given below

Choose an option

Show full solutionCorrect option: D
Correct answer
DStatement I is incorrect but Statement II is correct.

Step-by-step explanation

Any metal will reduce the oxide of other metals which lie above it in the Ellingham diagram because the free energy will become more negative by an amount equal to the difference between the two graphs at that particular temperature. So, statement II is correct. 

According to the Ellingham diagram, any metal oxide with higher ΔG° is less stable than the one with lower ΔG°. So, statement I is incorrect.

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About this question

This is a previous-year question from JEE Main 2022, covering the General Principles and Processes of Isolation of Metals chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.