Well i am not sure....But after seeing the Prcap what i felt is the next scene may be of VITROLAGE.....Not Sur though....Coz during the Coming up Seq it was shown that Mayank Tries to Protect Nupur Knowing Somone is standing at the Dorr...Ready to attack Nupur...But The Precap showed the Guy putting the bolltle in to the room and it falling on the Ground....So cant Make out.....
Acid throwing or vitriolage is a form of voilent Assault. Perpetrators of these attacks throw Acid at their victims (usually at their Faces), burning them, and damaging Skin tissue, often exposing and sometimes dissolving the Bones.