Question

Pick out the wrong statement.

a.

Multigrade lubricating oils have high viscosity index.

b.

Paraffinic oil has very high viscosity index.

c.

Naphthenic oil has very low viscosity index.

d.

High viscosity index means a large change in viscosity with change in temperature.

Posted under Basic Chemical Engineering

Answer: (d).High viscosity index means a large change in viscosity with change in temperature.

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