<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> How hydrogen can be obtained from steam? [2 Mark]

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> When steam is passed over heated metals like magnesium, zinc, aluminium and iron, hydrogen gas is liberated. [1 Mark] The other product of this reaction are the respective metallic oxides. [1 Mark]