Govt will ensure 8 per cent guaranteed interest on fixed deposits by senior citizens and pensioners said Union Finance Minister Arun Jaitley.Mr Jaitley was responding to the demand made in the zero hour by Derek O Brien of the TMC, who said that the post-demonetization and post-GST, the interest rates have come down affecting the living condition of the pensioners and poor.Union Minister said, the 8 per cent guaranteed scheme was launched by LIC of India. Some members wanted a discussion on the issue.