The word(s) "which" appears 877 time(s) in 758 verse(s) in Quran in Mohsin Khan translation.

(711) Who has created death and life that He may test you which of you is best in deed. And He is the All-Mighty, the Oft-Forgiving;

(712) But when they will see it (the torment on the Day of Resurrection) approaching, the faces of those who disbelieve will change and turn black with sadness and in grief and it will be said (to them): "This is (the promise) which you were calling for!"

(713) which of you is afflicted with madness.

(714) Ask them, which of them will stand surety for that!

(715) which Allah imposed on them for seven nights and eight days in succession, so that you could see men lying overthrown (destroyed), as if they were hollow trunks of date-palms!

(716) Eat and drink at ease for that which you have sent on before you in days past!

(717) That this is verily, the word of an honoured Messenger [i.e. Jibril (Gabriel) or Muhammad صلى الله عليه وسلم which he has brought from Allah].

(718) Upon the disbelievers, which none can avert,

(719) Verily, the torment of their Lord is that before which none can feel secure. -

(720) No, that is not like that! Verily, We have created them out of that which they know!