Hypernova-type explosions are believed to be the origin of the long duration gamma-ray bursts. In view of their potential influence on the living species evolution on the Earth, it is tempting to analyse galactic supernova remnants from the angle of their possible relation to producing galactic gamma-ray bursts. X-ray properties of young galactic supernova remnants are considered and conclusions are drawn on the signature of galactic hypernova in some of the well studied supernova remnants.