P Block Elements Question 484
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.
BETA
