2. Questions Bank
  3. 8th Class
  4. Science
  5. Materials : Metals and Non-metals

8th Class Science Materials : Metals and Non-metals Question Bank Metals and Non Metals HOTS Objective Problems

  • question_answer
    Among the following groups of oxides, the group that cannot be reduced by carbon to give the respective metals is                                    

    A)  \[C{{u}_{2}}O,{{K}_{2}}O\]         

    B)  \[F{{e}_{2}}{{O}_{3}},ZnO\]

    C)  \[CaO,{{K}_{2}}O\]    

    D)  \[PbO,F{{e}_{3}}{{O}_{4}}\]

    Correct Answer: C

    Solution :

      Not Available    


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