1.

Define sublimation, name two solids that sublime on heating.

Answer»

Ans :- Sublimationis a chemical process where a solid turns into a gas without going through a liquid stage. An example of sublimiation is when ice cubes shrink in the freezer.

Typicallysolidsundergo sublimation at low pressures (under vacuum). At standard, atmospheric pressure, a fewsolids which willsublimeare iodine (at slightly higher than room temperature), carbon dioxide (dry ice) at -78.5 degrees Celsius, as well as naphthalene (used in mothballs) and arsenic.



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