The periodic table, democracy, and sources of energy - Class 10 students will no longer learn about these from their government-issue textbooks. Complete chapters on the subjects now stand deleted as a part of a "rationalisation" meant to reduce the "burden on students". The removal of the theory of evolution from the Class 10 curriculum stoked significant concern earlier this year. Newly released textbooks by the National Council of Educational Research and Training (NCERT) have revealed further cuts, including a chapter on the periodic table.