Which is the functional group in propanone?

What is formed when methanol reacts with carbon monoxide in the presence of an $I_2-Rh$ catalyst?

List two characteristic features of carbon which,when put together,give rise to a large number of carbon compounds.

Unsaturated hydrocarbons produce a yellow flame with a large amount of black smoke when burnt in oxygen. Give the reason.

Which of the following functional groups is present in a ketone compound?

Write true or false for the following statement:
Saturated hydrocarbons will generally give a clean flame,while unsaturated carbon compounds will give a yellow flame with lots of black smoke.