Question

why do we keep drinks in a thermos flasks? ​

Answer 1

Answer:

Because thermosteel have property for obtaining heat and cold, and it will help the water from not heating or coolling up.

Answer 2

Answer:

for retaining the temperature

Explanation:

the thermos flask has a special coating inside with vacuum and other insulating material in an air tight flask .the vacuum saves heat lost by radiation ,the material saves heat lost by conduction and the air tight container by convection