AIIMS AIIMS Solved Paper-2014

  • question_answer
    Assertion\[NaOH\]cannot be stored in a vessel made of aluminium or zinc. Reason A protective layer of oxide is formed on the surface of the metal.

    A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion

    B) Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

    C) Assertion is true but Reason is false

    D) Both Assertion and Reason are false

    Correct Answer: C

    Solution :

                    \[\text{NaOH}\]reacts with Al and Zn both and forms soluble \[NaAl{{O}_{2}}\]  and  \[N{{a}_{2}}Zn{{O}_{2}}\]  (sodium aluminate and sodium zincate) respectively.


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