I wanted to ask questions regarding the dead
1) If I make duaa for a dead person, will they be able to hear my duaa
2) When I read a particular surah lets say surah mulk and I say to Allah 'Ya Allah please send the reward of this surah to this person who is dead' then will Allah send the reward to this dead person
3) If I say to allah while Im making duaa 'Ya Allah please send my salaam to this particular dead person' then will that person hear my salam
Jazkallah for ur time