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10th Class Science Metals and Non-metals / धातु और अधातु Question Bank Metals and Non-Metals

  • question_answer
    When sodium hydroxide solution is added to a freshly prepared solution of ferrous sulphate, a green precipitate of ferrous hydroxide is formed which on standing becomes brown because

    A)  ferric salts are unstable

    B)  the mixture becomes dirty

    C)  ferrous hydroxide becomes ferric oxide

    D)  green ferrous hydroxide oxidises to brown ferric hydroxide  

    Correct Answer: D

    Solution :

    Not Available


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