b. The milk in Madhu s cup was very hot and she was not able to drink it. Her mother put the cup of milk in a bowl of cold water. This cooled the milk and Madhu could drink it. Explain the process which cooled the milk in the cup. (2 marks)
Answers
Answer:
Since coffee was very hot, it was not possible for Ashutosh to sip it hurriedly. It could burn its tongue. <br> (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. <br> (c ) With the timely help by his wife, Ashutosh could sip coffee quite comfortably and could reach office in time. <br> (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.
Answer: Area rate of evaporation is faster due to which tea or milk cools .
Explanation: