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JEE Main 202313 AprilMorning Shift
Exam
JEE Main
Year
2023
Date
13 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Hydrocarbons

JEE Main 2023 · 13 April · Morning Shift · Chemistry · Hydrocarbons

In the following reaction ‘ X ’ is CH _ 3 ( CH _ 2 ) _ 4 CH _ 3 → _...

In the following reaction ‘X’‘ X ’ is

CH3(CH2)4CH3→HCl△Anhy.AlCl3Xmajorproduct{CH}_{3}{\left({CH}_{2}\right)}_{4}{CH}_{3}\mathop{\to}_{\mathop{HCl}_{△}}^{Anhy . {AlCl}_{3}}\mathop{X}_{majorproduct}

In the following reaction ‘ X ’ is CH _ 3 ( CH _ 2 ) _ 4 CH _ 3 → _ HCl _ △ ^ Anhy . AlCl _ 3 X _ majorproductIn the following reaction ‘ X ’ is CH _ 3 ( CH _ 2 ) _ 4 CH _ 3 → _ HCl _ △ ^ Anhy . AlCl _ 3 X _ majorproduct

Options

  1. A

    The higher concentration of which gas in air can cause stiffnes of flower buds?

  2. B

    The higher concentration of which gas in air can cause stiffnes of flower buds?

  3. CCH3(CH2)4CH2Cl{CH}_{3}{\left({CH}_{2}\right)}_{4}{CH}_{2}Cl
  4. DCl−CH2−(CH2)4−CH2−ClCl - {CH}_{2} - {\left({CH}_{2}\right)}_{4} - {CH}_{2} - Cl

Correct answer

B.

The higher concentration of which gas in air can cause stiffnes of flower buds?

Step-by-step solution

When n-Hexane is heated with anhydrous AlCl3{AlCl}_{3} and HClHCl gas at 573K573K under a pressure of about 30−35atm30 - 35atm it Isomerises to give a branched chain alkanes.

CH3(CH2)4CH3→HCl△Anhy.AlCl3(CH3)2CHCH2CH2CH32−methylpentane+3−methylpentane{CH}_{3}{\left({CH}_{2}\right)}_{4}{CH}_{3}\mathop{\to}_{\mathop{HCl}_{△}}^{Anhy . {AlCl}_{3}}\mathop{{\left({CH}_{3}\right)}_{2}{CHCH}_{2}{CH}_{2}{CH}_{3}}_{2 - methylpentane} + 3 - methylpentane

Major product in the above reaction is 2-methylpentane.

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