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Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceSingle correctHardData or graph

JEE Main 3 April 2025, Shift 2, Chemistry Q55

Question 55 of 75 in this shift, Chemistry question 5 of 25, Section A.

40 mL of a mixture of CH3COOH\mathrm{CH_3COOH} and HCl (aqueous solution) is titrated against 0.1 M NaOH solution conductometrically. Which of the following statement is correct?

The figure, in words

Conductometric titration graph: conductance (mS) on y-axis vs V_NaOH / mL on x-axis. Curve falls steeply from A to B (at 2.0 mL), rises gently from B to C (at 5.0 mL), then rises steeply from C to D. Dashed verticals at 2.0 and 5.0 mL.
  1. (1)CH3COOH\mathrm{CH_3COOH} is neutralised first followed by neutralisation of HCl
  2. (2)The concentration of HCl in the original mixture is 0.005 MOfficial answer
  3. (3)The concentration of CH3COOH\mathrm{CH_3COOH} in the original mixture is 0.005 M
  4. (4)Point 'C' indicates the complete neutralisation of HCl

Official answer

Option 2

NTA final key.

Chapter
Electrochemistry
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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 42 of the 174 JEE Main shifts held from 2017 to 2026.