JEE Main 2018 — Some Basic Concepts of Chemistry Question with Solution
JEE Main 2018 (15 Apr Shift 1 Online)
Question
A sample of is converted by heat to with a loss of of oxygen. The residue is dissolved in water and precipitated as . The mass of (in ) obtained will be:
(Given: Molar mass of )
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
No. of moles of oxygen in of oxygen molecule
According to the reaction,
moles of moles of
moles of
Molar mass of
moles of will ppt. moles
Mass of (in ) obtained will be
moles .
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This is a previous-year question from JEE Main 2018, 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.