Salat breaker

1) Talk in Salat knowingly or unknowingly, a few words or many  

2) Greet a person by Asalamu Alaikum, or by any other method 

3) To reply to greetings or saying Yarhamukallah to one who sneezes and saying Ameen to a dua not connected to to Salat

4) To say Inna Lil Lahi Wa Inna Ilaihi Raajioon on some sad news or Alhamdulillah or Subhanallah on hearing some good or strange news.

5) To make noise or say "OH!" or "AAH!" due to pain etc. 

6) Correcting the Qiraat of a person other than his own Irnaam. 

7) To recite the Quran by looking at the text.

8) To do such an act which gives the impression to onlookers that he is doing something else, rather than performing Salat. This is called AMALE KATHEER.

9) Eating or drinking knowingly or unknowingly.

10) To turn the chest away from the Qibla without an excuse.

11) Doing Sajda at a Najis place. 

12) Delay in covering the Satr (private parts) when uncovered, to the extent of performing one rukn in Salat.

13) Utterance in pain or trouble.

14) An adult laughing aloud.

15) To step ahead of the Imam during the Salat.

16) Making some great errors in the Qiraat of the Holy Quran.