Identify a side chain $(\mathrm{R})$ group present in serine, an amino acid.

What is the number of moles of water molecules required for complete hydrolysis of $n$ mole triglyceride?

Which of the following compounds has maximum covalent character?

Calculate the percent dissociation of 0.02 m solution if its freezing point depression is 0.046 K .

$\left[\mathrm{K}_{\mathrm{f}}\right.$ for water $\left.=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1} ; \mathrm{n}=2\right]$