X2 | Light, dark reactions easy trick | Markovnikov rule |

Описание: Watch 2 / 3 times, it will be a lifetime settlement for your memory.
Follow the words and hint carefully

Hints:
hv - Light ON
Dark - light off
3 degree haloalkane more stable - H kootam, not possible to attach X only with sunlight
C=C - double bond not possible to attach X only with sunlight
CCl4 - Kallu to break strong sp2 double bond
HX - acid for no violence