hi,

In respect of the streams SB and SX , there will be four sections in Part I (Physics, Chemistry, Biology and Mathematics) and another four sections in Part II (Physics, Chemistry, Biology and Mathematics).  Candidates  have to answer any THREE of the four subjects in Part I and any TWO of the four subjects in Part II. In case candidate attempts  more  than required sections, best of three in Part I and best of two in Part II is considered.

however since time is limited it is best to avoid the answering of excess questions. since there is negative marking for wrong attempted questions.