Find notable locations of the Carpathian Basin on a map.
Find notable historical places on a blank map.
It is also used as a food additive, limescale and rust remover.
One of the main units of Matthias Corvinus´ Black Army was the infantry.
A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.
The term ´hussar´ refers to a type of light cavalry which originated in Hungary and was the most popular in the 18th–19th centuries.
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
The sum of the volume of the ´tetrahedrons´ gives an approximation of the volume of the sphere.
Practising the use of the spatial coordinate system with the help of a computer-designed kitchen model.
Edges, diagonals and faces of a cuboid can be identified by its vertices.
Pick the shape that is shown in different views below.
Not all nets consisting of 6 congruent squares are foldable into cubes.
A component of DNA, it contains one less hydroxyl group than β-D-ribose.
The sixth member in the homologous series of straight-chain alkanes.
One of the oxides of sulphur, forms sulphuric acid with water.
One of the hydrogen halides, it is used for the production of alkyl bromides.
The simplest aromatic amine. Its scientific name is phenylamine.
There are ten national parks in Hungary.
The fifth member in the alkane homologous series. A colourless, combustible liquid.
A colourless, heavier-than-air gas with a pungent odour.