Solid ${\rm{C}}{{\rm{O}}_2}$ is known as dry ice, because

It evaporates at $ - '{\rm{ }}78^\circ C$ without melting

Its boiling points is more than $199^\circ C$

JEE CHEMISTRY MCQ: 14 TH GROUP ELEMENTS (P-BLOCK)

1 Easy

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Solid

\mathrm{C}{\mathrm{O}_2}

is known as dry ice, because

View answer and explanation

Correct option: D

It evaporates at

- '\mathrm{ }78^\circ C

without melting

Option D is correct because solid CO2, known as dry ice, undergoes sublimation at -78°C without melting into a liquid state.