Question

which liquid is having highest and lowest density

Answer 1

When heated to a temperature of 5,491 degrees Fahrenheit, Osmium becomes a liquid with a density of 20 grams per cubic centimeter. 

For liquids which are commonly found in everyday life, gasoline has a pretty low density: 0.7 g/ml. It is about 30% lighter than water which has a density of 1.0 g/ml. Compared to liquid hydrogen, however, gasoline is about 10x heaver.