Question

Of these four liquids, which has the lowest viscosity? options: A. Pancake syrup at room temperature B. Motor oil that is in the refrigerator C.Liquid mercury at room temperature D. A glass of lemonade at room temperature

Answer 1

Answer: B. Motor oil that is in the refrigerator

Explanation:

Viscosity can be defined as the resistance provided by the fluid against its movement or flow. It restricts the resistance to change in shape or movement of fluid.  The water has high viscosity as the water molecules do not restrict movement on the surface.

According to the given problem, motor oil has lowest viscosity because it may contain heavy hydrocarbons, which may restrict its flow also when kept in refrigerator, the bonds between hydrocarbons get compact hence, viscosity decreases.

Answer 2

Answer:

Option C, .Liquid mercury at room temperature

Explanation:

The viscosity of liquid mercury at room temperature is 1.526 cP. While the visocsity of lemonade at room temperature ranges between 15.10 to 17.44 cP. Viscosity of Motor oil kept in the refrigerator is equal to 1328.0 cP. And Viscosity of Pancake syrup at room temperature  is 5,000 cp. Hence, out of all the four liquids, mercury has the lowest viscosity

Hence, option C is correct