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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-29

  • question_answer
    Blood red colouration solution is produced when ferric chloride solution is treated with

    A) \[KCN\]                               

    B) \[KSCN\]

    C) \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]     

    D) \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]

    Correct Answer: B

    Solution :

    \[=\int_{{}}^{{}}{(\cos ec\,x+\cot x)dx}\]


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