Dear Student,
if being compared then both books are good, for class 12 PCB. However, Oswaal might stand better as it has a wider range of questions and also provides the best and crisp answers. Along with that they also provide you with the previous years questions papers which is very helpful while studying to get a better idea of the kind of questions asked for your board exams.
Hey!
Both books covers the huge content, but in Arihant the questions are given in the order of difficulty level, chapterwise as well as yearwise. And oswaal also covers the previous years paper with a wide range of difficult questions and it has an advantage over Arihant which is, that it also has the solution given by the topper during exam. And Arihant has its own merit that it covers the analysis of last 10 years exam that which chapter weigh how much and the number of questions covered.
I have given you the merits and demerits of both books, choice is yours!
Thankyou
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