it's totally new book ,not used
Xam idea of biology is literally best if you're preparing for your 12th board exams | no marks of pen/pencil totally new book

what's special in this guide

* important highlighted notes/short notes

*PYQs + more practice mcq +long/short answer questions

* full length sample questions paper to improve and check your efficiency

* diagrammatic explanations

*you can prepare yourself for neet through this also