A) 1-primary-OH, 2-secondary-OH
B) 2-primary-OH, 1 secondary-OH
C) 3-primary-OH
D) 1-primary-OH, 1 secondary OH, 1-tertiary OH
Correct Answer: B
Solution :
Glycerol has two types of\[OH\]groups. Two \[OH\]groups\[(1{}^\circ )\]are primary but one\[OH\] group\[(2{}^\circ )\]is secondary \[\underset{\begin{smallmatrix} | \\ ^{{{1}^{o}}}C{{H}_{2}}OH \end{smallmatrix}}{\overset{\begin{smallmatrix} ^{^{{{1}^{o}}}C{{H}_{2}}OH} \\ | \end{smallmatrix}}{\mathop{^{^{{{2}^{o}}}CHOH}}}}\,\] Note: Glycerol is highly viscous due to entensive intermolecular H bonding.
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