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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    Substance which absorbs \[C{{O}_{2}},\] and violently reacts with \[{{H}_{2}}O\] with sound is :

    A) \[{{H}_{2}}S{{O}_{4}}\]       

    B) \[CaC{{O}_{3}}\]

    C) \[ZnO\]     

    D) \[CaO\]

    Correct Answer: D

    Solution :

    [d] \[CaO+C{{O}_{2}}\xrightarrow{{}}CaC{{O}_{3}}\] \[CaO+{{H}_{2}}O\xrightarrow{{}}Ca{{(OH)}_{2}}\] hissing sound and \[\Delta H=-ve\]


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