Question

why does a piece of burning charcoal or wood kept on a tawa that is kept on a burner continuous to burn even when it is covered with a glass jar or Tumbler

Answer 1

this is because there must be some air inside the class and until the air is there it burns and after sometimes when the oxygen of the air is used up then it stops burning

Answer 2

because there will be in a glass get air and oxygen when burn then it burn