It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why ?

Explanation

Priyanshi would be more comfortable . The reason is that we get a lot of sweet an our body in a hot summer day.
Cotton being a good absorbed of water, absorbs sweat from the body and provides larger surface area for evaporation which causes more cooling effect. Nylon does not absorb sweat, so the sweat does not evaporation and Ali would feel uncomfortable.