JEE Main 2023 — Some Basic Concepts of Chemistry Question with Solution
JEE Main 2023 (25 Jan Shift 2)
Question
Number of hydrogen atoms per molecule of a hydrocarbon A having carbon is (Given : Molar mass of )
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Show full solutionCorrect answer: 12
Correct answer
12
Step-by-step explanation
Using table of empirical formula for the compound:
| Element | Percentage | Mole | ratio |
| C | |||
| H |
Thus, empirical formula is , empirical molecular mass = 14
Thus,
Molecular formula
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This is a previous-year question from JEE Main 2023, 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.