A) Glycerol
B) Ethylene glycol
C) Catechol
D) Resorcinol
Correct Answer: B
Solution :
Glycols are dihydric alcohol (having two hydroxyl groups). Ethylene glycol is the first member of this series. \[\underset{(Ethylene\,glycol)}{\mathop{\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{|}}}\,}}\,\]
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