How many fatty acid molecules are present in cortisol?

In which of the following is beeswax completely soluble?

What is lecithin?

Match the following columns correctly:

Column $I$	Column $II$
$(a)$ Oleic acid	$(p)$ Short-chain saturated fatty acid
$(b)$ Palmitic acid	$(q)$ Long-chain saturated fatty acid
$(c)$ Crotonic acid	$(r)$ Short-chain unsaturated acid
$(d)$ Butyric acid	$(s)$ Long-chain unsaturated fatty acid

Which of the following is a $16$ carbon fatty acid?

In the structure of lipids, the number of $H$ atoms is much higher than the number of $O$ atoms. Which of the following correctly represents this relationship?