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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Acids and Bases

  • question_answer
    Which of the anhydrous salts when come in contact with water turns blue           [AMU 1981, 82]

    A)                 Ferrous sulphate             

    B)                 Copper sulphate

    C)                 Zinc sulphate    

    D)                 Cobalt sulphate

    Correct Answer: B

    Solution :

                    Cu(II) complexes are blue. The four water molecules are attached with secondary valencies of the metal atom e.g. \[[Cu{{({{H}_{2}}O)}_{4}}]\,S{{O}_{4}}\].\[{{H}_{2}}O\].


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