Which of the following is incorrect statement for liquid?

• A

  Surface tension of a liquid decreases with increase in temperature
• Correct answer
  B

  Viscosity of a liquid decreases with decrease in temperature
• C

  Vapour pressure of a liquid increases with increase in temperature
• D

  Droplets of a liquid on flat surface are slightly flattened due to gravity

Hence, the correct answer is option: 'B'.