: Primarily covers Inorganic Chemistry , including metals, non-metals (halogens, sulfur, nitrogen), and basic chemical laws.

Still used in Russian schools as a reliable source of "extra" problems, though teachers often adapt the wording to match modern standards.

: Known for its "classical" approach, the problems emphasize fundamental theory and stoichiometry. While it lacks the modern test formatting of current exams like the OGE or EGE , it is highly valued by teachers for building deep conceptual understanding.

: Focuses heavily on Organic Chemistry , transitioning into complex topics like hydrocarbons and oxygen-containing organic compounds.

Useful for self-testing and reinforcing topics like the Periodic Law or Chemical Bonds.