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One of the hydrogen halides, it is used for the production of alkyl bromides.
Find notable historical places on a blank map.
One of the main units of Matthias Corvinus´ Black Army was the infantry.
This animation demonstrates the geographical regions of Hungary.
The term ´hussar´ refers to a type of light cavalry which originated in Hungary and was the most popular in the 18th–19th centuries.
Pit houses were typical dwellings in the Arpad era.
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.
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
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.
An aldehyde which is an important raw material and intermediate product in industry.
Member of the cycloalkane homologous series.
A colourless liquid with an odour similar to benzene. The monomer of polystyrene.
The simplest diol.
The simplest primary amine.