question_answer 80)

  The addition of \[HCl\] to an alkene proceeds in two steps. The first step is the attack of \[{{H}^{+}}\]ion to  portion which can be shown as: (a)         (b)            (c)             (d) all of these are possible

Answer:

  (b) Since double bond is a source of electrons and the charge flows from source of more or less electron density, therefore,\[\pi \]-electrons of the double bond attack the proton.