Melting point of cis - But - 2 - ene is lower than that of trans - But - 2 - ene. Give reason .

Assertion : trans - Pent -2- ene is polar but trans - but -2- ene is non - polar. Reason : The polarity of cis- - isomers is more than trans - isomer,which are either non - polar or less polar.

You are provided with But - 2 - yne, how will you convert it into : trans - But - 2 - ene

Assertion:- Boiling point of cis-2-butene is more than trans-2-butene. Reason:- Dipole moment of cis-2-butene is more than trans-2-butnen.

Which of the following is incorrect for cis-but- 2 -ene relative to trans-but- 2 -ene?

Assertion : 2,3- dimethyl but -2- ene is more stable than but -2- ene. Reason : 2,3- dimethyl but -2- ene possesses 12 alpha- hydrogen atoms whereas but -2- ene possesses only 6 alph- hydrogen atms and therefore former shows more pronounced hyperconjugation.

The addition of Br_2 to ( E)-but-2-ene gives