NEET Sample Paper NEET Sample Test Paper-51

  • question_answer To dissolve 3.3g of certain metal 110mL of \[1N{{H}_{2}}S{{O}_{4}}\]. Find the equivalent mass of metal-

    A) 15 g                             

    B) 30 g

    C) 20 g                             

    D) 10 g

    Correct Answer: B

    Solution :

    \[meq.\text{ }of\text{ }{{H}_{2}}S{{O}_{4}}=110\times 1=110\] \[Equivalent\text{ }of\text{ }{{H}_{2}}S{{O}_{4}}=110\times {{10}^{-}}^{3}\] now according to law, equivalents of \[{{H}_{2}}S{{O}_{4}}=\text{ }equivalents\text{ }of\text{ }metal\] \[\therefore \,\,\text{ }equivalent\text{ }of\text{ }metal\,\,=\,\,110\,\,\times \,\,{{10}^{-3}}\] \[now\text{ }equivalent\,\,=\,\,\frac{weight}{GEM}\] \[110\,\,\times \,\,{{10}^{-}}^{3}=\text{ }\frac{3.3}{GEM}\,\text{ }GEM\,\,=\,\,30\]

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