IUPAC name of the some alkenes are given below.
Find out the correct stability order.
A. 2-Methylbut-2-ene
B. cis-But-2-ene
C. 2, 3-Dimethylbut-2-ene
D. Prop-1-ene
Choose the correct answer from the options given below :
← JEE Main 2026 · 5 Apr · Shift 2
ChemistrySingle correct+4 / -1Question 63 of 75
JEE Main 2026 · 5 Apr · Shift 2, Chemistry question 63
Answer and worked solution
Official answer: A
Stability rises with the number of alkyl groups on the double bond (hyperconjugation).
| Alkene | Substitution | α-H |
|---|---|---|
| 2,3-Dimethylbut-2-ene (C) | tetra | 12 |
| 2-Methylbut-2-ene (A) | tri | 9 |
| cis-But-2-ene (B) | di | 6 |
| Prop-1-ene (D) | mono | 3 |
Order: C > A > B > D.
(A)