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JEE Main & Advanced Chemistry The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I Question Bank Carbon Family

  • question_answer
    Solid \[C{{O}_{2}}\] is known as dry ice, because [Pb. CET 2000]

    A) It melts at \[0{}^\circ C\]

    B) It evaporates at \[40{}^\circ C\]

    C) It evaporates at \[-78{}^\circ C\] without melting

    D) Its boiling point is more than \[199{}^\circ C\]

    Correct Answer: C

    Solution :

    Solid \[C{{O}_{2}}\] is knows as dry ice because it evaporates at \[-78{}^\circ C\] without changing in the liquid state.


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