MHTCET 19 Apr 2026 Shift 2 Paper

Concept: Glycerol is a three-carbon alcohol with one hydroxyl group on each carbon.Explanation: The structure of glycerol is $\mathrm{HOCH}_{2}-\mathrm{CHOH}-\mathrm{CH}_{2}\mathrm{OH}$.The longest continuous carbon chain contains three carbon atoms joined by single bonds, so the parent hydrocarbon is $\text{propane}$.Each carbon carries a hydroxyl group, $-\mathrm{OH}$, giving three such groups in total.According to IUPAC nomenclature, the presence of three hydroxyl groups is indicated by the suffix $\text{-triol}$.Numbering the chain from either end places the $-\mathrm{OH}$ groups at positions $1$, $2$, and $3$.Combining the parent name with the suffix and locants gives the IUPAC name $\text{propane-1,2,3-triol}$.Answer: $\text{propane-1,2,3-triol}$