Explain the following:
Name and write chemical formula of the green coating formed on the metal.

Explain the following: A metal 'X' acquires a green colour coating on outer surface on exposure to air. (i) Identify the metal 'X' and name the process responsible for this change. (ii) Name and write chemical formula of the green coating formed on the metal. (iii) List two important methods to prevent the process.

Write the chemical formula of cryolite

Answer the following question: Write the chemical formula of salt.

Write the formula of the following Work

Write the formula of the following. Force

Write the formula of the following .Power

What is rust?Write the chemical formula .

Name the following : A metal which forms an amphoteric oxide.