The following question was asked on myPAT website:
I started with the solution by counting the hyper-conjugative structures available to each alkene. Based on this concept only, order is:
I > II = III > IV
Then, I noticed that II and III have different carbon count. As, n-hexane (~68 °C) have more thermodynamic stability than n-pentane (~36 °C), therefore the order becomes:
I > II > III > IV
But, option B was incorrect. What I am doing wrong?
The correct option is: