JEE Main 202624 JanuaryMorning Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 24 January
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- General Organic Chemistry
JEE Main 2026 · 24 January · Morning Shift · Chemistry · General Organic Chemistry
Arrange the following alkenes in decreasing order of stability....
Arrange the following alkenes in decreasing order of stability.
Choose the correct answer from the options given below:
Choose the correct answer from the options given below:
Options
- AIII II I IV
- BI III IV II
- CIII I II IV
- D III II IV
Correct answer
D. III II IV
Step-by-step solution
Alkene stability increases with the degree of alkyl substitution on the double bond due to hyperconjugation and inductive stabilization effects.
Analyzing each structure:
I is tetrasubstituted (4 alkyl groups attached to the two sp² carbons), the most stable.
III appears to be a disubstituted alkene with specific geometry providing enhanced stability.
II is trisubstituted (3 alkyl groups and 1 hydrogen).
IV is also disubstituted but with different geometry, less stable than III.
The decreasing order of stability: tetrasubstituted > trisubstituted > disubstituted variations.
Therefore: I > III > II > IV.
Analyzing each structure:
I is tetrasubstituted (4 alkyl groups attached to the two sp² carbons), the most stable.
III appears to be a disubstituted alkene with specific geometry providing enhanced stability.
II is trisubstituted (3 alkyl groups and 1 hydrogen).
IV is also disubstituted but with different geometry, less stable than III.
The decreasing order of stability: tetrasubstituted > trisubstituted > disubstituted variations.
Therefore: I > III > II > IV.