The arrangement of things on Chaudhary's table is different when he is killed and when police discovers his dead body.
When Dagar kills couples in love hostel most of them are in their bunk beds. But when police visits love hostel all the dead bodies are lying on floor in the middle of the room.
The bullet hole on Diler's SUV's windshield is different between shots.
When Bobby Deol (Dagar) perform mass killing in the hostel, he uses same pistol in same hand and fires at least 18 bullets continuously. There was no change of magazine or so.