Name two compounds which sublime on heating.

Name the following gases based on their characteristic : The gas which reacts with hydrochloride gas to form a compound which sublimes on heating.

Name one compound which gives CO2 on heating?

What is sublimation? Give three examples of substances which sublime on heating.

Name two substances which expand on heating.

Name two subtances which expand on heating.

Name two compounds which are purified by sublimation.

Name two substances which contract on heating.