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JEE Main 2014 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2014 (09 Apr Online)

Question

Dissolving 120 g of a compound of (mol. wt. 60) in 1000 g of water gave a solution of density 1.12 g/mL. The molarity of the solution is :

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Show full solutionCorrect option: C
Correct answer
C2.00 M

Step-by-step explanation

Mass of compound  =120g ;   moles= 120g 60g/mole =2

Mass of solution  = 1 0 0 0 + 1 2 0 = 1 1 2 0 g

Volume of solution  mass d = 1120g 1.12g/mL =1000mL

Molarity  = 2  moles 1 0 0 0  mL × 1 0 0 0 mL

              = 2 M (no of moles/Litre)

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About this question

This is a previous-year question from JEE Main 2014, 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.