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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?

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प्रश्न

What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?

लघु उत्तरीय
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उत्तर

When a few pieces of iron are dropped into a blue coloured copper sulphate solution, the blue colour of the solution fades and eventually turns into light green.

\[\ce{Fe + CuSO4_{(aq)}-> FeSO4 + Cu}\]

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अध्याय 6: Chemical Reactions - Exercise 1 [पृष्ठ ७३]

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सेलिना Concise Chemistry [English] Class 8 ICSE
अध्याय 6 Chemical Reactions
Exercise 1 | Q 5.2 | पृष्ठ ७३

संबंधित प्रश्न

What do you observe when dilute sulphuric acid is added to granulated zinc?


What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.


Write chemical equation for the event.
Aluminium came in contact with air.


Write a chemical equation for the event.

Iron filings are dropped in aqueous solution of copper sulphate.


Which of the following is the correct arrangement of the given metals in ascending order of their reactivity?

Zinc, Iron, Magnesium, Sodium


A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.


A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.


Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.


Explain the following

  1. Reactivity of Al decreases if it is dipped in HNO3
  2. Carbon cannot reduce the oxides of Na or Mg
  3. NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
  4. Iron articles are galvanised.
  5. Metals like Na, K, Ca and Mg are never found in their free state in nature.

Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.


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