NCERT Books for Class 12 study are prepared by educational experts who have in- depth knowledge of the subject. utmost CBSE seminaries follow these NCERT Books for Class 12. They make the base for engineering courses for scholars who plan to pursue a advanced degree. For engineering and medical competitive examinations, the position of questions asked in the drugs section is delicate. Hence, to break questions of this position, scholars should be well- clued in the introductory generalities of NCERT Class 12 study.