Which of the following substances is most viscous at room temperature? by Sunday | Aug 29 | Physics WAEC | 0 comments A. Water B. Alcohol C. Petrol D. Palm oil E. Kerosine Correct Answer: Option D – Palm oil Users Also Read These:Which of the substances is a liquid at room…Which of the following statements about viscosity…The lower and upper fixed points marked on a…Which of the following halogens is liquid at room…Which of the reactions represented by the following…