2. Solved Papers
  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    An element has the following characters (1) atomic number : 31 (2) with\[HN{{O}_{2}}:\]no reaction (3) reaction with\[{{O}_{2}}:\]no reaction (4) on heating form a layer of oxide (5) used in transistor then the element will be

    A)  Ga              

    B) \[In\]

    C)  Br               

    D) \[Mg\]

    Correct Answer: A

    Solution :

     Atomic number ofgalium (Ga) is 31. It does not react with\[HN{{O}_{2}}\]and\[{{O}_{3}}\]. It is used in transistor. It forms a layer of oxide on heating.


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