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 an 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.