GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It is the resistance of a liquid to flow.
A
viscosity
B
surface tension
C
boiling point
D
heat of vaporization
Explanation: 

Detailed explanation-1: -A fluidwith large viscosity resists motion because its molecular makeup gives it a lot of internal friction. A fluid with low viscosity flows easily because its molecular makeup results in very little friction when it is in motion.

Detailed explanation-2: -The property of liquids to resist their flow is called viscosity.

Detailed explanation-3: -The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of “thickness": for example, syrup has a higher viscosity than water.

Detailed explanation-4: -Flow resistance is the force opposing motion and flow of the fluid handled. It is caused by the friction and deflection forces generated as the fluid flows through pipes and valves and results in a pressure drop (see Head loss).

Detailed explanation-5: -Resistance actually occurs between the molecules of a liquid, effecting how a liquid flows. Viscosity can be thought of as a measure of a fluid’s resistance to flow. Liquids of high viscosity, such as syrup, flow slowly. Liquids of a low viscosity flow fast, such as mercury.

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