What is the number of moles of propane-1,2,3-triol formed when $n$ mole of triglyceride is hydrolysed ?

Hydrolysis of Triglycerides
A triglyceride is an ester formed from glycerol (propane-1,2,3-triol) and three fatty acids.

The hydrolysis reaction is:

$\text{Triglyceride} + 3\text{H}_2\text{O} \rightarrow \text{Glycerol} + 3\text{ Fatty Acids}$

From the stoichiometry, each mole of triglyceride produces one mole of glycerol.

Therefore, $n$ moles of triglyceride yield $n$ moles of propane-1,2,3-triol.

Final answer: $\boxed{n}$