Chemistry - STEREO ISOMERISM Question with Solution | TestHub

(A) False: trans-isomer is generally more symmetrical, so its melting point is higher than cis; given order is incorrect.

(B) True: Heat of combustion depends on stability; the more substituted alkene is more stable and hence has lower heat of combustion.

(C) False: cis/trans boiling-point order shown is incorrect.

(D) False: The CN group strongly affects dipole moment, but the given order is opposite to the correct trend.

Hence, the correct answer is → (B).