The process due to which dry ice changes into carbon dioxide gas is

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Evaporation

Filtration

Sublimation

Separating funnel

answer is A.

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Detailed Solution

The process due to which dry ice changes into carbon dioxide gas is sublimation.
The process in which a substance changes its state from solid to gas directly or vice versa is known as sublimation.
Solid carbon dioxide

(C O_{2})

is also known as "dry ice" because it transforms instantly into a gas when heated rather than melting into a liquid, and hence it’s known as dry ice. This process is known as sublimation.

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