Learn

Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 4 April 2026, Shift 2, Chemistry Q54

Question 54 of 75 in this shift, Chemistry question 4 of 25, Section A.

At 27 ∘^\circC, 0.1 M, 1 L K4[Fe(CN)6]\mathrm{K_4[Fe(CN)_6]} aqueous solution and 0.1 M, 1 L FeCl3\mathrm{FeCl_3} aqueous solution are placed in a container separated by a semi permeable membrane AB. Assume complete dissociation of both the solutes. Which of the following statement is correct?

The figure, in words

Container divided by a vertical semi-permeable membrane AB. Left side 'x': 0.1 M, 1 L K4[Fe(CN)6]; right side 'y': 0.1 M, 1 L FeCl3.
  1. (1)Blue color is formed on both sides.
  2. (2)Ionic solutes in aqueous solution can pass through semi-permeable membrane.
  3. (3)Solution on side 'y' is hypotonic.Official answer
  4. (4)To cause the reverse flow of solvent during osmosis, external pressure (any value) should be applied to side 'x'.

Official answer

Option 3

NTA final key.

Chapter
Solutions
Topic
Colligative Properties
Idea tested
Hypertonic and Hypotonic Solutions

Same idea in other shifts

Asked 2× in all
  1. 9 Apr 2024, Shift 1 · Q630.05M CuSO40.05\mathrm{M}\ \mathrm{CuSO_4} when treated with 0.01M K2Cr2O70.01\mathrm{M}\ \mathrm{K_2Cr_2O_7} gives green colour solution of…MediumSingle correctHas 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 42 of the 174 JEE Main shifts held from 2017 to 2026.