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प्रश्न
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
What happens when iron nails are put into copper sulphate solution?
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उत्तर
When an iron nail is placed in copper sulphate solution, then iron sulphate solution and copper metal are formed.
\[\ce{\underset{(Blue solution)}{\underset{Copper sulphate}{CuSO4_{(aq)}}} + \underset{(Grey)}{\underset{Iron}{Fe_{(s)}}} -> \underset{(Greenish solution)}{\underset{Iron sulphate}{FeSO4_{(aq)}}} + \underset{(Red-brown)}{\underset{Copper}{Cu_{(s)}}}}\]
In this process, iron displaces copper from a copper sulphate solution. The deep blue hue of copper sulphate solution diminishes as it transforms into a light green solution of iron sulphate. A red-brown layer of copper metal is deposited on the surface of iron metal. This displacement reaction occurs because iron is more reactive than copper.
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
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(a) Magnesium
(b) Zinc
(c) Gold
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(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?
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Write the chemical equation for the following reaction:
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