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JEE Main 202528 JanuaryMorning Shift
Exam
JEE Main
Year
2025
Date
28 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Redox Reactions

JEE Main 2025 · 28 January · Morning Shift · Chemistry · Redox Reactions

Given below are two statements: Statement I: In the oxalic acid vs...

Given below are two statements: Statement I: In the oxalic acid vs KMnO4\mathrm{KMnO}_4 (in the presence of dil H2SO4\mathrm{H}_2 \mathrm{SO}_4 ) titration the solution needs to be heated initially to 60∘C60^{\circ} \mathrm{C}, but no heating is required in Ferrous ammonium sulphate (FAS) vs KMnO4\mathrm{KMnO}_4 titration (in the presence of dil H2SO4\mathrm{H}_2 \mathrm{SO}_4 ) Statement II: In oxalic acid vs KMnO4\mathrm{KMnO}_4 titration, the initial formation of MnSO4\mathrm{MnSO}_4 takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs KMnO4\mathrm{KMnO}_4, heating oxidizes Fe2+\mathrm{Fe}^{2+} into Fe3+\mathrm{Fe}^{3+} by oxygen of air and error may be introduced in the experiment. In the light of the above statements, choose the correct answer from the options given below

Options

  1. ABoth Statement I and Statement II are false
  2. BBoth Statement I and Statement II are true
  3. CStatement I is false but Statement II is true
  4. DStatement I is true but Statement II is false

Correct answer

B. Both Statement I and Statement II are true

Step-by-step solution

Heating is required in oxalic acid filtration due to High activation energy. Heating is not required in FAS vs KMnO4\mathrm{KMnO}_4 titration because Fe2+\mathrm{Fe}^{2+} will get converted into Fe3+\mathrm{Fe}^{3+} by oxygen of air and error may be introduced in the experiment. Both Statement-I and Statement-II are correct.
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