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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceOtherMediumData or graph

JEE Main 30 July 2022, Shift 2, Chemistry Q33

Question 33 of 90 in this shift, Chemistry question 3 of 30, Section A.

Which of the following is the plot of Gibb's free energy (G) vs temperature (T), at constant pressure, for a pure substance?

The figure, in words

Four small G vs T graphs given as options A-D, no values labelled; axis labels G and T only.
  1. (1)[figure: axes G (vertical) and T (horizontal); a straight line sloping downward to the right from near the top of the G axis]Official answer
  2. (2)[figure: axes G (vertical) and T (horizontal); a line rising to the right (slightly curved) starting from a point on the G axis above the T axis]
  3. (3)[figure: axes G (vertical) and T (horizontal); a line rising to the right (slightly curved) starting at the origin]
  4. (4)[figure: axes G (vertical) and T (horizontal); a horizontal line starting at the G axis, parallel to the T axis]

Official answer

Option 1

NTA final key.

Chapter
Thermodynamics (Chemistry)
Topic
Gibbs Free Energy
Idea tested
Gibbs Energy vs Temperature Graph

Same idea in other shifts

Asked 2× in all
  1. 2 Apr 2025, Shift 2 · Q54Which of the following graphs correctly represents the variation of thermodynamic properties of Haber's process ?HardDiagram basedHas a figure

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.