1(India) National Council of Educational Research and Train ing. National Curriculum Framework for School Education. ht tp://www, ncert, nic. in/sites/school curriculum/curiindex. htm.
2(India) Central Board of Secondary Education. Syllabus (2003 --2005)--Chemistry (Code No. 043). http://www, cbse. hie. in/. 2004--10--30.