Pick out the option that is not a functional group from the following.

Which of these is not an aliphatic compound?

Which is the most suitable carrier gas in gas chromatography?

What is the paper strip developed in partition chromatography called?

Gas chromatography can be performed in X, whereas liquid chromatography can be performed in Y. Identify X and Y.

In fractional distillation, vapors of low boiling point component ascend to the top of the column.

In crystallization, the compound dissolved in a solvent is more soluble in what temperature?

Which is not a heteroatom?