Questions

World press day is celebrated on 3 may 2013 accross the world based o the theme Safe to Speak

The primary use of iron ore is in the production of iron. Most of the iron produced is then used to make steel. Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items.

Cholesterol belongs to lipids class of molecules. Lipids are sometimes called as fats which act as storing energy and structural components of cell membranes.

Sublimation is a process when a solid changes directly into gas instead changing into liquid first. Dry ice is an example of Sublimation process because it doesn't change into liquid CO2 and directly change into gaseous CO2 when heated.

Hence, Dry ice is an example of Sublimation process.