Once Ravi and Aman were cooking rice in the kitchen and accidentally Aman's hand got a severe burn while opening the lid of the cooking vessel. Immediately,Ravi applied ice on his hand,then applied an ointment,and told him to cook carefully as he had been hurt by steam,and steam causes more severe burns. Aman thanked Ravi and smiled.
$(a)$ According to you,what kind of qualities are shown by Ravi?
$(b)$ How does steam produce more severe burns than boiling water?

(N/A) The qualities shown by Ravi are:
$(i)$ Presence of mind and in-depth knowledge.
$(ii)$ Caring and helpful nature.
$(iii)$ Being a true and responsible friend.
$(b)$ Steam at $373 \ K$ $(100^{\circ}C)$ causes more severe burns than boiling water at the same temperature. This is because the particles in steam possess extra energy in the form of latent heat of vaporisation,which is the amount of heat energy required to change $1 \ kg$ of liquid to gas at atmospheric pressure at its boiling point.