Question

To keep a soup warm, Radika wrapped the container, in which it was kept with a woollen clothes. can she apply the same method to keep a glass of cold drink cold? Give reasons for your answer.

Answer 1

no as woollen cloths traps air thus keeping soup warm but it's not applicable for keeping cold drink cold

Answer 2

She applied same method to keep a glass of cold water because woolen clothes trap the cold inside the glass or trap the heat inside container the same principel is used in thermos