Wool-wax contains:

Select the correct match for $X$ and $Y$.

Column $X$	Column $Y$
$(1)$ Short-chain saturated fatty acid	$(P)$ Oleic acid
$(2)$ Long-chain saturated fatty acid	$(Q)$ Crotonic acid
$(3)$ Short-chain unsaturated fatty acid	$(R)$ Butyric acid
$(4)$ Long-chain unsaturated fatty acid	$(S)$ Palmitic acid

Which of the following is not a type of simple lipid?

Which of the following statements is incorrect regarding lipids?

Which bond is present between alcohol and acid in the structure of lipids?

Statement $P$: The alcohol molecule in the structure of oil is not glycerol.
Statement $Q$: Steroids do not contain any fatty acids.