JEE Main 2023 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2023 (Online) 13th April Morning Shift
Question
of calcium hydroxide was consumed when it was reacted with of unknown solution of . Also standard solution of containing 2 drops of phenolphthalein was titrated with calcium hydroxide, the mixture showed pink colour when burette displayed the value of whereas the burette showed initially. The concentration of is _____________ M. (Nearest integer)
Enter your answer
Show full solutionCorrect answer: 1
Step-by-step explanation
Volume of
Volume of
Concentration of .
No. of milli moles of
No. of milli moles of .
i.e. .
Reaction with :
No. of milli moles of
i.e. no. of milli moles of
So, the concentration of is 1 M.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Some Basic Concepts Of Chemistry chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2023, covering the Some Basic Concepts Of Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.