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

(521) Say (O Muhammad صلى الله عليه وسلم): "The appointment to you is for a Day, which you cannot put back for an hour (or a moment) nor put forward."

(522) And those who disbelieve say: "We believe not in this Qur'an nor in that which was before it." But if you could see when the Zalimun (polytheists and wrong-doers) will be made to stand before their Lord, how they will cast the (blaming) word one to another! Those who were deemed weak will say to those who were arrogant: "Had it not been for you, we should certainly have been believers!"

(523) And We did not send a warner to a township but those who were given the worldly wealth and luxuries among them said: "We believe not in the (Message) with which you have been sent."

(524) So Today (i.e. the Day of Resurrection), none of you can profit or harm one another. And We shall say to those who did wrong [i.e. worshipped others (like the angels, jinn, prophets, saints, righteous persons) along with Allah]: "Taste the torment of the Fire which you used to belie.

(525) And when Our Clear Verses are recited to them, they say: "This (Muhammad صلى الله عليه وسلم) is naught but a man who wishes to hinder you from that which your fathers used to worship." And they say: "This (the Qur'an) is nothing but an invented lie." And those who disbelieve say of the truth when it has come to them (i.e. Prophet Muhammad صلى الله عليه وسلم when Allah sent him as a Messenger with proofs, evidence, verses of this Qur'an, lessons, signs, etc.): "This is nothing but evident magic!"

(526) And We had not given them Scriptures which they could study, nor sent to them before you (O Muhammad صلى الله عليه وسلم) any warner (Messenger).

(527) And a barrier will be set between them and that which they desire [i.e. At-Taubah (turning to Allah in repentance) and the accepting of Faith], as was done in the past with the people of their kind. Verily, they have been in grave doubt.

(528) And what We have revealed to you (O Muhammad صلى الله عليه وسلم), of the Book (the Qur'an), it is the (very) truth [that you (Muhammad صلى الله عليه وسلم) and your followers must act on its instructions], confirming that which was (revealed) before it. Verily! Allah is indeed All-Aware, and All-Seer of His slaves.

(529) And if Allah were to punish men for that which they earned, He would not leave a moving (living) creature on the surface of the earth; but He gives them respite to an appointed term: and when their term comes, then verily, Allah is Ever All-Seer of His slaves.

(530) Verily, We give life to the dead, and We record that which they send before (them), and their traces and all things We have recorded with numbers (as a record) in a Clear Book.