Now onwards apx.120 days are left for the CBSE boards examinations for class XII. I want to make some suggestions to the children for preparation of biology subject: every day learn 4-5 questions of biology chapterwise. do practice of questions given in assignment booklet and sample papers. you will be ready with 480-500 questions from 16 chapters in biology by the end of february, 2018. This is the best strategy to prepare your subject without creating any pressure.
Wish you good luck.
Wish you good luck.