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CMC Medical CMC-Medical VELLORE Solved Paper-2015

  • question_answer
    \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+x{{H}_{2}}S{{O}_{4}}+yS{{O}_{2}}\xrightarrow{{}}\]\[{{K}_{2}}S{{O}_{4}}+C{{r}_{2}}{{(S{{O}_{4}})}_{3}}+z{{H}_{2}}O\] The above equation will be balance, when

    A)  x = 4, y = 1, z = 4              

    B)  x = 1, y = 3, z = 1

    C)  x = 3, y = 2, z = 3              

    D)  x = 2, y = 2, z = 1

    E)  x = 2, y = 1, z = 2

    Correct Answer: B

    Solution :

    \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+{{H}_{2}}S{{O}_{4}}+3S{{O}_{2}}\xrightarrow{{}}\]\[{{K}_{2}}S{{O}_{4}}+Cr{{(S{{O}_{4}})}_{3}}+{{H}_{2}}O\] Thus, \[x=1,\text{ }y=3,\text{ }z=1\]


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