Chemistry - GOC Question with Solution | TestHub

Carbocation stability follows tertiary > secondary > primary for A. For B, the negative-charge orbital has sp > sp² > sp³ s character and hence carbanion stability. Heat of hydrogenation is inversely related to alkene stability, so the printed C order is not correct. D compares different molecular formulas: total molar heat of combustion grows with carbon/H content and ring strain as shown.