Which curve in figure represents the curve of ideal gas ?

Options

A. Only B
B. C and D
C. E and F
D. A and B

Answer

A

Explanation

For ideal gas pV = constant at all pressures. Therefore, only B represents ideal gas.With increase of temperature, the kinetic energy of the molecules of liquid increases which can overcome the intermolecular forces. Hence, the liquid start flowing.
In other word the viscosity of a liquid decreases with increase in temperature. It has been found that the decrease is about 2% per degree rise in temperature.