P-Block Elements Ques 58

Question: Solid $ CO_2 $ is known as dry ice, because

[Pb. CET 2000]

Options:

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 $

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Answer:

Correct Answer: C

Solution:

Solid $ CO_2 $ is knows as dry ice because it evaporates at $ -78{}^\circ C $ without changing in the liquid state.



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