NEET Sample Paper NEET Sample Test Paper-3

  • question_answer A nitrate of an alkali metal M on heating gives \[{{O}_{2}},N{{O}_{2}}\] and \[{{M}_{2}}O\]. The metal M will be

    A)  \[Na\]                         

    B)  \[K\]

    C)  \[Rb\]                         

    D)  \[Li\]

    Correct Answer: D

    Solution :

        Lithium nitrate gives \[{{O}_{2}},\,\,N{{O}_{2}}\] and \[Li{{O}_{2}}\] on heating                              \[4LiN{{o}_{3}}\xrightarrow{{}}2L{{i}_{2}}O+4N{{O}_{2}}+{{O}_{2}}\] Nitrates of other alkali metals give nitrites and \[{{O}_{2}}\].

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