Babu :
Rahman sir demonstrated this experiment in our class last year. He cut a
small piece of a metal and put it

Babu :
Rahman sir demonstrated this experiment in our class last year. He cut a
small piece of a metal and put it in water. It melted to a silvery globule and
moved about on the surface of water. A gas was liberated. This metal was
kept in kerosene.
Joy:
I didn’t get a chance to see this experiment. But I have read about it in the
text book. The metal taken here is —-​