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NEET NEET SOLVED PAPER 2016 Phase-I

  • question_answer
    Which one of the following statements is correct when \[\text{S}{{\text{O}}_{\text{2}}}\]is passed through acidified \[{{\text{K}}_{2}}C{{r}_{2}}{{O}_{7}}\]solution?                                                                                                                                                                

    A)  The solution turns blue

    B)  The solution is decolourized

    C)   \[\text{S}{{\text{O}}_{\text{2}}}\]is reduced

    D)   Green \[C{{r}_{2}}{{(S{{O}_{4}})}_{3}}\]is formed

    Correct Answer: D

    Solution :

    \[{{K}_{2}}C{{r}_{2}}O{{}_{7}}+S{{O}_{2}}+{{H}_{2}}S{{O}_{4}}\] \[\to {{K}_{2}}S{{O}_{4}}+\underset{\text{green colour}}{\mathop{C{{r}_{2}}{{(S{{O}_{4}})}_{3}}+{{H}_{2}}O}}\,\]


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