Which is most viscous?

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(C) Viscosity is directly proportional to the extent of intermolecular hydrogen bonding. Among the given options,$Glycerol$ $(CH_2OH-CHOH-CH_2OH)$ has

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Glycerol

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(C) Viscosity is directly proportional to the extent of intermolecular hydrogen bonding. Among the given options,$Glycerol$ $(CH_2OH-CHOH-CH_2OH)$ has the highest viscosity because it contains $3$ $-OH$ groups,allowing for extensive hydrogen bonding. In comparison,$Ethylene \ glycol$ has $2$ $-OH$ groups,while $Ethanol$ and $Methanol$ each have only $1$ $-OH$ group.

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