Which of the following compounds has a sweet,fruity smell?

With the help of a diagram,explain the cleansing action of soap.

Which is the functional group in propanone?

An aldehyde as well as a ketone can be represented by the same molecular formula,say $C_{3}H_{6}O$. Write their structures and name them. State the relation between the two in the language of science.

What is the monomer unit of Teflon?

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