The increasing order of viscosity of the following compounds is given as $hexane < H_{2} O < glycerol$
which of the following is the correct reason?

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Hexane has strongest intermolecular forces

$H_{2} O$ has strongest intermolecular forces

Glycerol has strongest intermolecular forces

weaker the intermolecular forces, greater is the viscosity

answer is C.

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Detailed Solution

As stronger the inter molecular forces, greater will be the viscosity. Glycerol has strongest intermolecular force due to hydrogen bonding (three H-bond per molecule). Hence, the correct order is hexane < $H_{2} O$ < glycerol.

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