JEE Main 2020 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2020 (Online) 9th January Evening Slot
Question
10.30 mg of O2 is dissolved into a liter of sea
water of density 1.03 g/mL. The concentration
of O2 in ppm is__________.
Enter your answer
Show full solutionCorrect answer: 10
Correct answer
10
Step-by-step explanation
1030 gm of sea water contains = 10.3 × 10–3 gm
106 gm of sea water contains = = 10 ppm
106 gm of sea water contains = = 10 ppm
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This is a previous-year question from JEE Main 2020, 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.