Question

which gas is safe and an effective extinguisher for all confined fires

Answer 1

There are five main types of fire extinguishers:

Water.

Powder.

Foam.

CO2.

Wet chemical.

Answer 2

Answer:

Carbon dioxide gas

Explanation:

There are five principle sorts of flame extinguishers:  

• Water
• Powder
• Froth
• $CO_2$
• Wet substance  

Each type is effectively recognizable by their names, hues, and at times their hoses. In case of confined fire which occurs in closed space, $CO_2$ fire extinguishers are considered as most appropriate one.

Since they don't desert any substances, in contrast to different other types of fire extinguishers, they are especially helpful for confined place fire such as workplaces and workshops where electrical fires may happen as they cause limited harm.