CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2004

  • question_answer
    \[a{{K}_{2}}C{{r}_{2}}{{O}_{7}}+2KCl+c{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}\] \[xCr{{O}_{2}}C{{l}_{2}}+yKHS{{O}_{4}}+z{{H}_{2}}O\]. The above equation balances when:

    A)  \[a=2,b=4,c=6\]and \[x=2,y=6,z=3\]

    B)  \[a=4,b=2,c=6\]and \[x=6,y=2,z=3\]

    C)  \[a=6,b=4,c=2\]and \[x=6,y=3,z=2\]

    D)  \[a=1,b=4,c=6\]and \[x=2,y=6,z=3\]

    E)  \[a=1,b=6,c=4\]and \[x=6,y=2,z=3\]

    Correct Answer: D

    Solution :

    \[\underset{1}{\mathop{a{{K}_{2}}C{{r}_{2}}{{O}_{7}}}}\,+\underset{4}{\mathop{bKCl}}\,+\underset{6}{\mathop{c{{H}_{2}}S{{O}_{4}}}}\,\xrightarrow{{}}\]\[\underset{2}{\mathop{x}}\,Cr{{O}_{2}}C{{l}_{2}}\,+\underset{6}{\mathop{y}}\,KHS{{O}_{4}}\,+\underset{3}{\mathop{z{{H}_{2}}O}}\,\]


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