The Ural Mountains, or simply the Urals, are a mountain range that runs approximately from north to south through western Russia, from the coast of the Arctic Ocean to the Ural River and northwestern Kazakhstan. Wikipedia Hope this clarifies your query :)

These are correct: "The Urals separate Europe from Asia." "Urals" is a plural noun and is the subject of the sentence, so the verb form is "separate." "The Ural Mountains separate Europe from Asia." "Ural" is functioning as an adjective. "Mountains" is capitalized because it is part of a name. The name is grammatically a plural noun and is the subject of the sentence, so the verb form is "separate." "The Ural range separates Europe of Asia." "Ural" is functioning as an adjective. "Range" is a singular noun and is the subject of the sentence, so the verb form is "separates."