1 : Charles Goodyear once accidentally P : and found that the resulting rubber Q : dropped a mixture of natural rubber R : was harder, stronger, more elastic S : and sulphur over a hot stove 6 : and non-sticky The Proper sequence should be:

Answer: Option B

Charles Goodyear once accidentally dropped a mixture of natural rubber and sulphur over a hot stove and found that the resulting rubber was harder, stronger, more elastic and non-sticky.