Name a metal that does not corrode in air.

Complete the following reaction:

Sodium $+$ Water $\to$ ______ $+$ ______.

Complete the following reaction: 

Carbon $+$ Oxygen $\to$ ______$+$______.

Why certain food items like pickles and curd should not be stored in metallic utensils?

Define corrosion. What is galvanisation of iron?

Why noble metals are used to make ornaments?

What do you mean by reactivity series of metals?

Name a metal that has the lowest density.