JEE Main 2013 — Some Basic Concepts of Chemistry Question with Solution
JEE Main 2013 (25 Apr Online)
Question
of solution is added to of of solution. What is the final concentration ?
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
From molarity equation
$\begin{aligned}
& \mathrm{M}_1 \mathrm{V}_1+\mathrm{M}_2 \mathrm{V}_2=\mathrm{MV}_{\text {(total) }} \\
& 2 \times \frac{10}{1000}+0.5 \times \frac{200}{1000}=\mathrm{M} \times \frac{210}{1000} \\
& 120=\mathrm{M} \times 210 \\
& \mathrm{M}=\frac{120}{210}=0.57 \mathrm{~M}
\end{aligned}$
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This is a previous-year question from JEE Main 2013, 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.