Question

A metal is used in thermit process. When its powder is heated with oxide of the metal to be extracted, it gives an oxide which is amphoteric in nature. The metal and its oxide respectively are :

A metal 'X' is used in the thermit process. When 'X' is heated with oxygen, it gives an oxide 'Y', which is amphoteric in nature. 'X' and 'Y' respectively are:

Sharmila mixed Aluminium oxide with Hydrochloric acid and Sodium hydroxide separately in two test tubes. In both cases, she observed salt formation.

Compound X and aluminium are used to join railway tracks. Identify the compound X; Name the reaction and write down its reaction.