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NEET Chemistry Analytical Chemistry Question Bank Self Evaluation Test - Analytical Chemistry

  • question_answer
    An aqueous solution of \[FeS{{O}_{4}},A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\] and chrome alum is heated with excess of \[N{{a}_{2}}{{O}_{2}}\] and filtered. The materials obtained are:-

    A) A colourless filtrate and a green residue.

    B) A yellow filtrate and a green residue.

    C) A yellow filtrate and a brown residue.

    D) A green filtrate and a brown residue.

    Correct Answer: B

    Solution :

    [b] Green residue is due to \[Fe{{(OH)}_{2}}\] and yellow filtrate is due to chromate ions \[CrO_{4}^{2-}\]


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