R. K. . Sharma and A. K. . Kamath, “Qualitative Analysis of Science Question Paper of Class X Board Examination”, SS, vol. 55, no. 2-3, pp. p.73–80, Sep. 2017, Accessed: Aug. 19, 2025. [Online]. Available: http://ejournals.ncert.gov.in/index.php/SS/article/view/2519