A set of metals in order of their increasing chemical reactivity is given below : silver, copper, lead, iron, zinc, magnesium and sodium. (a) Which of the above metals is stored in kerosene ? (b)Which metals will react vigorously with cold water ? (c)Which gas will be liberated when metals react with cold water ? (d)Which of the metals will react with oxygen when heated ?
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Zinc is more reactive than iron, hence when added' to iron (II) sulphate, it can displace iron metaliand the colour of solution fades from green to colourless due to formation of zinc sulphate. The greyish black iron metal gets deposited.
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