CBSE Class 6 Science Electricity And Circuit MCQs Set C. Based on CBSE and NCERT guidelines. The students should practice these Sample Papers to gain perfection which will help him to get more marks in CBSE examination. Based on CBSE and NCERT guidelines. Based on the same pattern as released by CBSE every year. CBSE releases sample papers every year. These papers are released prior to the CBSE examinations so that students can do practice.