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What is the role of solid carbon dioxide in cryogenic chillers?

What is the role of solid carbon dioxide in cryogenic chillers? Correct Answer Removes latent heat of sublimation

Cryogenic chillers use solid carbon dioxide, liquid carbon dioxide and liquid nitrogen. Solid carbon dioxide removes latent heat of sublimation. The latent heat of sublimation at a particular temperature is the amount of heat required to convert a unit mass of solid into gas.

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Which of the following statements relating to 'role' is/are true and false?
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