Ten people were injured when an RTC bus on its way from Tuni to Rajahmundry collided head-on with a chemical tanker on the outskirts of Annavaram on the national highway today . The injured were rushed to Area hospital at Tuni where they were discharged after giving first aid. The chemical tanker has overturned after collision resulting in overflowing of chemical substance on the road .The police along with the fire tender rushed to the spot and took steps to clear the overflowing chemical substance by sprinkling foam. A case was registered against the tanker driver for rash driving , police said