The decision was taken at a closed door meeting of the BJP legislature party at a hotel here attended by the party's central observers-Union Chemicals and Fertilizers Minister Ananth Kumar and the party national general secretary Anil Jain, state unit BJP Vice-President Sanjay Mayukh told PTI.
Kumar will be designated as the new Leader of Opposition in the 16th legislative Assembly.
The elevation has come as a big reward for the 60-year-old leader who has till date worked in the shadow of his more illustrious colleagues Sushil Kumar Modi and Nandkishore Yadav.
He has headed various departments in the erstwhile Nitish Kumar government.