Ashutosh was getting late for the office. He tried to sip boiling hot coffee from a cup. He felt very uncomfertable. His wife immediately brought a plate and asked him to sip the coffee from the plate. Ashutosh followed the advice and did not face any problem.
(a) Why was Ashutosh feeling uncomfortable
(b) How did sipping coffee from a plate was more comfertable.
(c) how did wife help Ashutosh ?
(d) what is the value associated with it?

Explanation

(a) Since coffee was very hot, it was not possible for Ashutosh to sip it hurriedly. It could burn its tongue.
(b) A plate has more surface area than the cup. Evaporation becomes faster in this case. Since cooling is always caused during evaporation, the temperature got lowered. It became comfortable to sip coffee from a plate.
(c ) With the timely help by his wife, Ashutosh could sip coffee quite comfortably and could reach office in time.
(d) We shold never drink milk, tea or coffee when these are boiling hot,. These are injurious to our throat. It is always better to allow them to cool. In case allow them to cool. In case we are in a hurry, we place them in a container with large surface area.