Question

Read the given statements and mark correct option.
Statement 1 : Solid CO2 changes its state when exposed to air.
Statement 2:CO2 undergoes sublimation
(A) Both statements 1 and 2 are true and statement 2 is the correct explanation
of statement 1.
(B) Both statements 1 and 2 are the but statement 2 is not the correct explanation of statement 1.
(C) Statement 1 is true and statement 2 is false.
(D) Both statements 1 and 2 are false.
(E) None of these​

Answer 1

Answer:

The answer is option (C)

Answer 2

For the given statements, (A) Statement 1 is true along with statement 2, and statement 2 also explains statement 1.

• Sublimation is the process by which a substance passes directly from the solid to the gaseous state without transitioning to the liquid state.
• At a temperature and pressure below the substance's triple point, this process, an endothermic phase transition, takes place.
• The best illustration of sublimation is dry ice, which is carbon dioxide that has been frozen.
• Dry ice directly transforms from its solid state to a gaseous state, which is visible as fog, when it is exposed to air.
• The gaseous state of frozen carbon dioxide is more stable than the solid state.
• Hence, we can say that both statements are correct and statement 2 is the correct explanation for the previous statement.

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