JEE Main 2017 — Some Basic Concepts of Chemistry Question with Solution
JEE Main 2017 (02 Apr)
Question
The most abundant elements by mass in the body of a healthy human adult are:
Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75kg person would gain if all atoms are replaced by atoms is:
Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75kg person would gain if all atoms are replaced by atoms is:
Choose an option
Show full solutionCorrect option: B
Correct answer
B7.5 kg
Step-by-step explanation
Weight of Hydrogen in body of 75 kg person
On replacing by , the new weight of
Weight increase =
On replacing by , the new weight of
Weight increase =
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This is a previous-year question from JEE Main 2017, 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.