JEE Main 2020ChemistryGeneral Principles and Processes of Isolation of MetalsEasyMCQ

JEE Main 2020 — General Principles and Processes of Isolation of Metals Question with Solution

JEE Main 2020 (05 Sep Shift 1)

Question

An Ellingham diagram provides information about:

Choose an option

Show full solutionCorrect option: B
Correct answer
Bthe temperature dependence of the standard Gibbs energies of formation of some metal oxides.

Step-by-step explanation

Ellingham diagram is graph of ΔG° vs T of any metal/element oxide. since

ΔG°=ΔH°-TΔS°

for most metal oxide formation metal (s) + oxygen (g) →metal oxide (s)

ΔH°=-ve

ΔS°=-ve

so graph will be a straight line with - ve y-intracept & + ve slope.

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About this question

This is a previous-year question from JEE Main 2020, 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.