Q17 of 160 Page 36

What is the name of the process due to which dry ice changes into carbon dioxide gas?

Sublimation is the process by which dry ice changes into carbondioxide gas.


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15

What is the mane of the process in which:

(a) A solid turns directly into a gas?


(b) A gas turns directly into a solid?

 16

Name one property which is shown by ammonium chloride but not by sodium chloride.

 18

What is the common name of solid carbon dioxide?

 19

Why is solid carbon dioxide known as dry ice?