cn i knw tht...is it enough to study ncert book welll...for board exams or i hv to try any othr book also???? i dnt thnk i hv much tym fr tht?? wot would u advice me.....
At this point of time, it is not advisable to go for any other reference book. Right now you should thoroughly study NCERT. Keep calm and revise your topics from NCERT well.
Best of luck!
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