Questions

Stainless steel contains 18% chromium and 82% steel

The land breeze is a coastal breeze at night blowing from the land to the ocean. It is caused by the difference in the rates of cooling of the land and of the ocean. Once again, the bigger the difference in temperature between the two, the stronger the wind.

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. 

Silicon carbide is used in Cutting very hard substances.

The one word substitution for Of outstanding significance is monumental which has a meaning of great in importance, in size or any such characteristic.

Projectile