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  3. BHU PMT

BHU PMT BHU PMT (Screening) Solved Paper-2005

  • question_answer
    Total number of atoms represented by the compound\[CuS{{O}_{4}}.5{{H}_{2}}O\]is:

    A)  27                                         

    B)  21

    C)  5                                            

    D)  8

    Correct Answer: B

    Solution :

                     Total number of atoms in\[CuS{{O}_{4}}.5{{H}_{2}}O\]are \[1+1+4+5(2+1)=6+5\times 3\] \[=21\] \[\therefore \]\[CuS{{O}_{4}}.5{{H}_{2}}O\]has 21 atoms.


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