CBSE 12th Economics sample paper with marking scheme: Practice well to score full marks CBSE 12th Economics sample paper with marking scheme: Practice well to score full marks CBSE Board Exam 2021: Check CBSE Class 12th Economics sample paper with marking scheme to score full marks in the examination. advertisement CBSE 12th Economics sample paper with marking scheme: Practice well to score full marks CBSE 12th Economics Sample 2020: The Central Board of Secondary Education, CBSE will announce the Class 10 and Class 12 board exam 2020 dates on December 31 at 6 pm. With just a few months left for the CBSE Board Exam 2020 to begin, all the candidates should practice sample papers to score well in the upcoming board examination.