[" 64.What is meant by the reactivity series of metals? Arrange the following metals in an increasing ord "],[" their reactivities towards water: "],[" (b) Heir reactivities towards water: "],[" (b) Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals.Wh "],[" (c) Name one metal more reactive and another less reactive than hydrogen."],[" (d) Name one metal which displaces copper sulphate solution and one which does not."],[" (e) Name one metal which displaces silver from silver nitrate solution and one which does not."]