The word(s) "mountains" appears 52 time(s) in 48 verse(s) in Quran in Mohsin Khan translation.

(11) And Allah has made for you out of that which He has created shades, and has made for you places of refuge in the mountains, and has made for you garments to protect you from the heat (and cold), and coats of mail to protect you from your (mutual) violence. Thus does He perfect His Favour unto you, that you may submit yourselves to His Will (in Islam).

(12) And walk not on the earth with conceit and arrogance. Verily, you can neither rend nor penetrate the earth, nor can you attain a stature like the mountains in height.

(13) And (remember) the Day We shall cause the mountains to pass away (like clouds of dust), and you will see the earth as a levelled plain, and we shall gather them all together so as to leave not one of them behind.

(14) Until, when he reached between two mountains, he found, before (near) them (those two mountains), a people who scarcely understood a word.

(15) Whereby the heavens are almost torn, and the earth is split asunder, and the mountains fall in ruins,

(16) And they ask you concerning the mountains: say, "My Lord will blast them and scatter them as particles of dust.

(17) And We have placed on the earth firm mountains, lest it should shake with them, and We placed therein broad highways for them to pass through, that they may be guided.

(18) And We made Sulaiman (Solomon) to understand (the case); and to each of them We gave Hukm (right judgement of the affairs and Prophethood) and knowledge. And We subjected the mountains and the birds to glorify Our Praises along with Dawud (David). And it was We Who were the doer (of all these things).

(19) See you not that whoever is in the heavens and whoever is on the earth, and the sun, and the moon, and the stars, and the mountains, and the trees, and Ad-Dawabb [moving (living) creatures, beasts], and many of mankind prostrate themselves to Allah. But there are many (men) on whom the punishment is justified. And whomsoever Allah disgraces, none can honour him. Verily, Allah does what He wills.

(20) See you not that Allah drives the clouds gently, then joins them together, then makes them into a heap of layers, and you see the rain comes forth from between them; and He sends down from the sky hail (like) mountains, (or there are in the heaven mountains of hail from where He sends down hail), and strikes therewith whom He wills, and averts it from whom He wills. The vivid flash of its (clouds) lightning nearly blinds the sight. [Tafsir At-Tabari].