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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceOtherMediumCalculation

JEE Main 5 April 2026, Shift 1, Chemistry Q56

Question 56 of 75 in this shift, Chemistry question 6 of 25, Section A.

Arrange the following resultant mixtures in increasing order of their pH values A. 10 mL 0.2 M Ca(OH)2\mathrm{Ca(OH)_2} + 25 mL 0.1 M HCl B. 10 mL 0.01 M H2SO4\mathrm{H_2SO_4} + 10 mL 0.01 M Ca(OH)2\mathrm{Ca(OH)_2} C. 10 mL 0.1 M H2SO4\mathrm{H_2SO_4} + 10 mL 0.1 M KOH Choose the correct answer from the options given below:
  1. (1)B < C < A
  2. (2)C < A < B
  3. (3)C < B < AOfficial answer
  4. (4)A < C < B

Official answer

Option 3

NTA final key.

Chapter
Equilibrium
Topic
pH and Buffers
Idea tested
pH of Strong Acid and Strong Base Mixtures

Same topic in other shifts

All pH and Buffers questions
  1. 2 Apr 2026, Shift 2 · Q52The first and second ionization constants of a weak dibasic acid H2A\mathrm{H_2A} are 8.1×10−88.1 \times 10^{-8} and 1.0×10−131.0 \times 10^{-13}…HardSingle correct
  2. 2 Apr 2026, Shift 2 · Q56At 25°C, 20.0 mL of 0.2 M weak monoprotic acid HX is titrated against 0.2 M NaOH. The pH of the solution (a) at the start of the titration…MediumSingle correct
  3. 4 Apr 2026, Shift 1 · Q74The pH of a solution obtained by mixing 55 mL of 0.10.1 M NH4OH\mathrm{NH_4OH} solution with 250250 mL of 0.10.1 M NH4Cl\mathrm{NH_4Cl} solution…MediumNumerical value
  4. 4 Apr 2026, Shift 2 · Q5520 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of…EasySingle correct
  5. 6 Apr 2026, Shift 2 · Q56Given is a concentrated solution of a weak electrolyte AxBy\mathrm{A_xB_y} of concentration 'c' and dissociation constant 'K'. The degree of…HardSingle correct
  6. 4 Apr 2025, Shift 2 · Q71x mg of Mg(OH)2\mathrm{Mg(OH)_2} (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of…EasyNumerical value

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