PDF chapter test TRY NOW

​Answer the following:
 
A mixture of iodine and sand is heated strongly in a china dish covered with an inverted funnel. After some time, violet vapours are seen and shiny crystals deposit on the cooler parts of the funnel.
 
pic13.png
 
1. ​What is the above separation technique?
​
 
2. ​After heating, what remains in the dish?
​