question_answer

\[{{S}_{1}}:\] Trans-But-2-ene has higher boiling point than cis-But-2-ene. \[{{S}_{2}}:\,\,1,\,\]4-Dichiorobenzene has zero dipole moment. \[{{S}_{3}}:\,\] Trans cyclodecene is more stable as compare to cis-cyclodecene. \[{{S}_{4}}:\,\]Trans 1, 2-Dibromoethene is more soluble in water than cis-1, 2-Dibromoethene.

A) T T T T

B) F T F T         

C) F F F F

D) F T F F

Correct Answer: D

Solution :

\[{{S}_{1}}:\] Dipole moment of cis-but-2-ene is higher than trans, hence cis has high boiling point. \[{{S}_{2}}:\]  Has equal and opposite dipoles, hence it has zero dipole moment. \[{{S}_{3}}:\]In cycloalkenes cis isomers is more stable than trans for eight to twelve membered rings. \[{{S}_{4}}:\]Diple moment of cis-1, 2-dibromoethene is higher than the trans, henze cis has more solubility.