JEE Main 2020 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 9 January 2020, Shift 2, Chemistry Q47

Question 47 of 75 in this shift, Chemistry question 22 of 25, Section B.

10.30 mg of

\mathrm{O_2}

is dissolved into a liter of sea water of density 1.03 g/mL. The concentration of

\mathrm{O_2}

in ppm is ______.

Official answer

10.00 to 10.00

NTA final key (Jan 2020). Any value in the range scored.

Chapter: Solutions
Topic: Mole Concept
Idea tested: PPM and Mass Percentage

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Asked 4× 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 42 of the 174 JEE Main shifts held from 2017 to 2026.