Good morning! 

As I've been through this situation,it's most crucial time for an intermediate level student to choose the upcoming course ,grades ,practicals ,cracking some entrance tests like IIT-jee ,mains ,and Neet etc.Dont stress yourself thinking about pattern of the question paper or how hard it might be .First and best thing that could happen in boards is that one would come to know their actual capability and will power during this toughest time .So all you need to focus is how to answer your question well and indeed All the best !