The word(s) "what" appears 597 time(s) in 511 verse(s) in Quran in Muhammad Pickthal translation.

(101) In the day when Allah gathereth together the messengers, and saith: what was your response (from mankind)? they say: We have no knowledge. Lo! Thou, only Thou art the Knower of Things Hidden,

(102) And when Allah saith: O Jesus, son of Mary! Didst thou say unto mankind: Take me and my mother for two gods beside Allah? he saith: Be glorified! It was not mine to utter that to which I had no right. If I used to say it, then Thou knewest it. Thou knowest what is in my mind, and I know not what is in Thy Mind. Lo! Thou, only Thou, art the Knower of Things Hidden?

(103) Unto Allah belongeth the Sovereignty of the heavens and the earth and whatsoever is therein, and He is Able to do all things.

(104) He is Allah in the heavens and in the earth. He knoweth both your secret and your utterance, and He knoweth what ye earn.

(105) Say: Unto whom belongeth whatsoever is in the heavens and the earth? Say: Unto Allah. He hath prescribed for Himself mercy, that He may bring you all together to the Day of Resurrection whereof there is no doubt. Those who ruin their souls will not believe.

(106) Unto Him belongeth whatsoever resteth in the night and the day. He is the Hearer, the Knower.

(107) Say (O Muhammad): what thing is of most weight in testimony? Say: Allah is Witness between me and you. And this Qur'an hath been inspired in me, that I may warn therewith you and whomsoever it may reach. Do ye in sooth bear witness that there are gods beside Allah? Say: I bear no such witness. Say: He is only One Allah. Lo! I am innocent of that which ye associate (with Him).

(108) Messengers indeed have been denied before thee, and they were patient under the denial and the persecution till Our succour reached them. There is none to alter the decisions of Allah. Already there hath reached thee (somewhat) of the tidings of the messengers (We sent before).

(109) Nay, but unto Him ye call, and He removeth that because of which ye call unto Him, if He will, and ye forget whatever partners ye ascribed unto Him.

(110) And with Him are the keys of the Invisible. None but He knoweth them. And He knoweth what is in the land and the sea. Not a leaf falleth but He knoweth it, not a grain amid the darkness of the earth, naught of wet or dry but (it is noted) in a clear record.