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In words like век - вечный, урок - урочный, доска - досочка or миска - мисочка. Can this be a result of Uralic influence?
В словах наподобие век - вечный, урок - урочный, доска - досочка или миска - мисочка. Может ли это быть результатом влияния уральских языков?
к/ч consonant alteration is the result of Slavic first palatalization. It happened because inherited velars *k and *g had no soft counterparts in Proto-Slavic, so they changed before front vowels *e/ē, *i/ī, and also before the palatal semivowel *j.
Researchers argue about dating of this process. Some believe it happened during VI-V centuries BC, and some postpone it to V—VI CE. I found no direct evidence, and I'm not a specialist in language or Slavic history, but it seems highly unlikely to me that this process had Uralic influence.
You can find more on Wikipedia:
http://www.kls.ksu.ru/krush/articles.php?id=6&num=2000000
Try this. It's a complex research of alteration in Russian.
