Question

Name any two substances which sublime

Answer 1

Sublimation is the process in which solid turns directly into gas without converting into liquid.
The substances undergoing sublimation are termed as sublimates.
       
            Heating  
Solid <=========> Gas
         
Examples :

Ammonium Chloride is white solid on heating it sublimes.

Iodine .

Dry ice.

Naphthalene balls

Answer 2

HEY!!

Here are a few substances that sublime:-

water (H2O) 
carbon dioxide (CO2) 
iodine (I2) 
aresenic (As)