JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Alkali Metals

  • question_answer
    On heating anhydrous \[N{{a}_{2}}C{{O}_{3}}\], ........ is evolved [CPMT 1971, 79]

    A) \[C{{O}_{2}}\]

    B) Water vapour

    C) \[CO\]

    D) No gas

    Correct Answer: D

    Solution :

    Anhydrous form of \[N{{a}_{2}}C{{O}_{3}}\] does not decompose on heating even to redness. It is a amorphous powder called soda ash.

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