2. Solved Papers
  3. AIIMS

AIIMS AIIMS Solved Paper-2001

  • question_answer
    The normality of orthophosphoric acid having purity of 70% by weight and specific gravity 1.54 is:

    A)  11N                      

    B)         22 N                     

    C)  33 N                     

    D)         44 N

    Correct Answer: C

    Solution :

    70% by weight means                              70 of orthophosphoric acid is present in 100 g acid \[N=\frac{w}{Eq.wt.}\times \frac{1000}{{{V}_{(cc)}}}\] \[w=70g\] \[Eq.wt.=\frac{mol.\,mass}{no.\,of\,replaceable\,H-atoms}=\frac{98}{3}\] \[V=\frac{mass}{density}=\frac{100}{1.54}\] \[N=\frac{70\times 3\times 1000\times 1.54}{98\times 100}=33N\]                                        


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