Suspension & Penalty

I am working in an autonomous body under Ministry of Finance. Sometimes back I was suspended for nearly 190 days. During the suspension period two chargesheets were served upon and I was asked to reply to the chargesheet.The charges were denied in the replies. Later on an inquiry was held by the inquiry officer in which I was told to reply in yes or no. Further I was told that if I deny any charges, then another inquiry will be conducted which will take long time and my period of suspension will be extended. As a result I accepted all the charges and signed the papers which was already with the inquiry officer. The paper says that I have accepted all the charges. As a result a major penalty was imposed on me which was challenged by me and the penalty was altered. During the period of suspension no review committee was formed and obviously the suspension was not extended on the basis of the report of the committee but on the whim. (1) Can I challenge the suspension and get the full salary for the period of suspension instead of subsistence allowance? (2) Can I challenge the whole inquiry process and ask for fresh inquiry to be conducted?