Hadronic B decays related to QCD at Belle

Using semi-inclusive method we measure B→XSη decays, for which the large branching fraction is observed for m(XS)>2GeV/c2. We also study the penguin dominated channel B0→ρ0K⁎0 along with associated decays. The first observation of B0→ρ0K+π− is made and respective branching fraction is calculated. Finally, exclusive B+ meson decays to the Ds(⁎)−K+π+ final state are analysed and respective branching fractions are measured. All analysis are based on the data sample of 657×106BB¯ pairs collected by the Belle detector at the KEK-B e+e− asymmetric collider, at the ϒ(4S) resonance.