Hii...I passed Boards last year with CGPA 10...first of all don't be nervous, thats the main reason behind fetching less marks & make your concepts clear as much as you can & don't take NCERT as a laid back book...if you find NCERT questions easy then it does not mean that its a low level book, its a bible for those appearing for IIT JEE & AIEEE cause it has nice concepts..you find them easy cause your concepts are clear..if you want to opt for some high standard books then go for R.S. Aggarwal..if you finish full NCERT & RS Aggarwal then you can easily secure 100% in Maths! In science again strengthen your concepts cause in boards you should expect at least 30% question to be twisted (I mean like questions having surprise elements). NCERT is best for PHY & CHEM, you may use side books like Lakhmir Singh for both Physics & Chemistry as I did & I solved whole paper in 2:15 hrs... Be confident about what you learnt...& when you study, keep in mind that whatever I study I should absorb it & do mastery in it...& remember amount of time does not matter..its your quality of study that counts!
Sorry I cant tell anything about Bio. I was very weak in it..my strong points were PHYSICS, CHEMISTRY, MATHEMATICS, ENGLISH & COMPUTER.
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It contains all the tricky questions from various books with 10 model papers and solutions.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.