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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-23

  • question_answer
    Which of the following statement is not correct when a mixture of NaCI and \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is gently warmed with concentrated \[{{H}_{2}}S{{O}_{4}}\]?

    A)  A deep red vapour is evolved

    B)  The vapour when passed into NaOH solution gives a yellow solution of \[N{{a}_{2}}Cr{{O}_{4}}\]

    C)  Chlorine gas is evolved

    D)  Chrornyl chloride is formed

    Correct Answer: C

    Solution :

    Chromyl chloride confirmatory test for ionic chloride which forms \[Cr{{O}_{2}}C{{l}_{2}}\] (deep red)


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