2. Solved Papers
  3. NEET

NEET AIPMT SOLVED PAPER 1999

  • question_answer
                    Which of the following when added as an impurity into silicon produces n-type semiconductor?

    A)                                                                                                                                                                                            P            

    B)                 Al

    C)                 B  

    D)                 Mg

    Correct Answer: A

    Solution :

                    When pentavalent impurity is added to silicon then n-type semiconductor is formed. Out of given options only phosphorus (P) is pentavalent, so it should be doped to silicon to make it n-type semiconductor.


You need to login to perform this action.
You will be redirected in 3 sec spinner