Question

why steam burns are severe burns than boiling water

Answer 1

this is due to the latent heat of vapourisation present in the steam
steam contains 4.2J of heat more than boiling water , which is present as the latent heat of vapourisation. ..

Answer 2

steam burns are severe burn than boiling water because steam is jealous of boiling water. ... However, as steam is formed from boiling water, it contains the heat energy of boiling water, along with the latent heat of vaporization. Hence, as steam has more heat energy, it can cause more severe burns than boiling water.