Question

Akanksha has made two paper cups by folding a sheet of paper. She half fills
one of the cups with water and keeps the other empty. She puts those two paper cups above the flame carefully.
With reference to the above activity answer the following questions:
(a) Which zone of the flame is best for heating ?
(b)
What happens to the empty paper cup when it is heated ?
(c) What happens to the paper cup with water and why?
(d) What will be the change in temperature of water ?​

Answer 1

The yellow zone of flame is very much good for heating.

The empty paper cup which is kept on the flame gets burnt very much easily and fastly.

the paper cup containing water does not get burnt on heating because its take time to reach its ignition temperature and by keeping water in the paper cup we have increased its ignition temperature .

There will be some change in temperature of water which is being heated.

I hope my answer will help you.