Sites like 11klasov.net and community groups on VK offer PDF and DJVU versions of both the Basic and Advanced (Profile) levels.
If you are looking for help with exercises, "Ready Homework" (GDZ) sites provide step-by-step solutions: novoshinskii organicheskaia khimiia 10 klass onlain
The textbook is also hosted on ibooks.ru for authorized educational users. ✍️ Solutions and GDZ Sites like 11klasov
💡 The authors often combine materials for grades 10 and 11 in single volumes. If you can't find a specific topic in a "Grade 10" book, check the "Grade 11" or "Grade 10-11" versions as the curriculum coverage can overlap depending on the school's program. novoshinskii organicheskaia khimiia 10 klass onlain
Offers detailed answers for the 10th-grade curriculum on MegaResheba.ru .
The textbook by Ivan Novoshinskii and Nina Novoshinskaya is available online in several formats.