Write reaction to justify amphoteric nature of aluminium.

Write one chemical reaction to show the amphoteric nature of water.

Mention an important ore of aluminium.

Why are decomposition reactions mostly endothermic in nature?

Write a short noite on particle nature of light.

Be (OH)_2 Is amphoteric in nature . Give example.

Write the chemical reaction to illustrate the following: Coupling reaction

Write the reaction of thermal decomposition of sodium azide.

Translate the following statements into chemical equations and then balance them. Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate