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Question
Pick out the wrong statement.
Options:
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.
Answer: Option D
Answer: (d).High viscosity index means a large change in viscosity with change in temperature.

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