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This product is good. But it is only useful for biology and a bit for chemistry, I didn't found physics question that helpful they very similar to that of ncert textbook. If you are looking mainly for bio its worth it but for Phy it is ok. It has bit of mistakes but they can be easily identified by you, this mistakes are not that big.
It really works for board exam class 10 ..... i think you should buy it . If want to attend HIGHER ORDER THINKING QUESTION then you should reffer this . Most of the question are likely to come from this book
So all the best for your 10 Board (2019 - 20). And to me because I'm also going to give 10 board next year.
The book was in excellent condition. It contains select questions and not many questions. You can rely on it if you have limited time. Otherwise you can buy something else. It has only questions and solutions. Nothing else like mind maps,etc. In brief it is not a guide, but a useful question bank and has very good questions too.