You can go refer previous year question paper or at least 10 years past question paper. there are many guides available to buy which consists of question paper there are question banks otherwise go to C.B.S.E. NIC . in you will find question paper its the official site of C.BS.E

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First of all, go for the questions at the back of your chapter.Then. You could go for Last years papers and sample paper for the current year on