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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceTwo statementsMediumConceptual

JEE Main 26 August 2021, Shift 1, Chemistry Q35

Question 35 of 90 in this shift, Chemistry question 5 of 30, Section A.

Given below are two statements. Statement I : The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of ΔG\Delta \mathrm{G} vs temperature. Statement II : The value of ΔS\Delta \mathrm{S} increases from left to right in Ellingham diagram. In the light of the above statements, choose the most appropriate answer from the options given below :
  1. (1)Both Statement I and Statement II are true
  2. (2)Both Statement I and Statement II are false
  3. (3)Statement I is true but Statement II is falseOfficial answer
  4. (4)Statement I is false but Statement II is true

Official answer

Option 3

NTA final key.

Chapter
General Principles and Processes of Isolation of Elements
Topic
Metallurgical Extraction
Idea tested
Ellingham Diagram Basics

Same idea in other shifts

Asked 6× in all
  1. 26 Jun 2022, Shift 1 · Q67Given below are two statements : Statement I : According to the Ellingham diagram, any metal oxide with higher ΔG∘\Delta G^\circ is more…MediumTwo statements
  2. 3 Aug 2021, Shift 1 · Q34Ellingham diagram does not predict theEasySingle correct
  3. 25 Feb 2021, Shift 1 · Q35Ellingham diagram is a graphical representation of :EasySingle correct
  4. 5 Sep 2020, Shift 1 · Q34An Ellingham diagram provides information about :EasySingle correct
  5. 6 Sep 2020, Shift 2 · Q42For a reaction, 4 M(s)+nO2(g)→2M2On(s)4\,\mathrm{M(s)}+n\mathrm{O_2(g)}\rightarrow 2\mathrm{M_2O_n(s)}, the free energy change is plotted as a function of…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.