The following diagram shows the formation of wood charcoal. Name the substance kept in tube A for making wood charcoal.

The substance kept in tube A for making wood charcoal is wood. Charcoal is a lightweight black carbon residue produced by strongly heating wood so as to drive off all water and other volatile constituents. Charcoal is better source of energy than wood.

The following diagram shows the formation of wood charcoal. Name the evolving gas.

Carbon monoxide gas evolved . When non metal react with air, it forms non-metal oxide which is acidic in nature.

The following diagram shows the formation of wood charcoal. Is the gas evolved combustible or non-combustible in nature?

The gas evolved combustible or non-combustible in nature. Flammable materials are the ones that are ignited or flame immediately when contacting with fire or high temperature in the air .