I bought this from Byjus website it contains pratical pages so that you can do practical easily at your home..paper and book quality is excellent...mindblowinh concept it contains..it helps me alot in my board examination as it has sharp content so if you are in 9th standard it will help you in 10th standard too.. i will also give free 2 batches along with this and a freebies according to your standard so that you can score well..✨️💗