The codes P1,p2,p3,q1,etc  are the question codes for NEET exam. The questions will be the same but it will be arranged in different patterns in each set of the question paper. It is done to prevent cheating during the exam. Also, the answer key is available according to this codes which is useful for preparation. Hope you get it.

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Actually in neet entrance examination, there are many sets of question papers ; each set contains same questions but they just differ in the way questions are arranged in them, it is done so to avoid cheating by students in the examination , for example question number 1 of set P1 may appear as question number 12 in set q2   So , now to differentiate one set from another, each question paper has an Alphabet written over it like q1 , q2 , p1, p2 etc which is called question paper code . Students writing the neet examination have to fill the question paper code number in their omr sheet , you should not make mistakes in filling it in the omr sheet .

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