JEE Main 2023 — Haloalkanes And Haloarenes Question with Solution
From: JEE Main 2023 (Online) 29th January Morning Shift
Question
Identify the correct order for the given property for following compounds.
Choose the correct answer from the option given below :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: C
Correct answer
C(A), (C) and (E) only
Step-by-step explanation
Boiling point of alkyl halide increases with
increase in size, mass of halogen atom and size of
alkyl group.
Boiling point of isomeric alkyl halide decreases with increase in branching. But we know boiling point of alkyl halide increases with increase in mass of halogen atom and here halogen atom Br has atomic mass 80 which is very high, so by adding each 'Br' atom molecular weight of alkyl halide increases very much and increases boiling point. Here decrease of boiling point due to branching get's overcome by high atomic mass of Br.
Density increases with increase in atomic mass of halogen atom. As Density =
Boiling point of isomeric alkyl halide decreases with increase in branching. But we know boiling point of alkyl halide increases with increase in mass of halogen atom and here halogen atom Br has atomic mass 80 which is very high, so by adding each 'Br' atom molecular weight of alkyl halide increases very much and increases boiling point. Here decrease of boiling point due to branching get's overcome by high atomic mass of Br.
Density increases with increase in atomic mass of halogen atom. As Density =
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This is a previous-year question from JEE Main 2023, covering the Haloalkanes And Haloarenes 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.