FeCl3 → Fe(OH)3 → Fe2O3 → Fe → Fe3O4

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

The answer to your question would be c. mineral oil  

The se-ci  bonds is more polar  than s-br bond

Answer it is also known as the completion state is untrue of the activation complex;