JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 31 August 2021, Shift 2, Chemistry Q56

Question 56 of 90 in this shift, Chemistry question 26 of 30, Section B.

The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is

x \times 10^{-4}

. The value of

x

is __________. (Nearest integer) [log 2.5 = 0.3979]

Official answer

6021

NTA final key.

Chapter: Equilibrium
Topic: pH and Buffers
Idea tested: pH of Strong Acids and Bases

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Asked 7× in all

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