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Observe the following diagram and identify the type of reaction and write observation. - Science and Technology 1

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प्रश्न

Observe the following diagram and identify the type of reaction and write observation.

संक्षेप में उत्तर
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उत्तर

  1. The type of reaction occurring in the given diagram is displacement reaction.
    \[\ce{\underset{\text{Iron}}{Fe_{(s)}} + \underset{\text{Copper sulphate}}{CuSO_{4(aq)}} -> \underset{\text{Ferrous sulphate}}{FeSO_{4(aq)}} + \underset{\text{Copper}}{Cu_{(s)}}}\]
  2. Observations:
  • The blue colour of the solution will turn to green in test tube A and copper coating will form on iron nail because iron displaces copper from copper sulphate.
  • The reaction will not occur in test tube B because iron is more reactive than copper.
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अध्याय 8: Metallugy - Answer the Following

संबंधित प्रश्न

Give one example each of which illustrates the following characteristics of a chemical reaction:

evolution of a gas


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 following event.

Zinc oxide is dissolved in dilute hydrochloric acid.


With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.


With reference to Acid explain with a suitable example of how the reactivity of the metals could be differentiated.


Complete the statement by filling in the blank with the correct word:

The metal which reacts with steam and the reaction is reversible is ________.


Give a balanced equation for the following type of reaction:

A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.


In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.


Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg

More reactive Moderately reactive Less reactive
     
     

Explain the following reaction with the balanced equation.

Sodium burns in air


Explain the following reaction with the balanced equation.

Magnesium reacts with dil HCl


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.


An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.


A solution of CuSO4 was kept in an iron pot. After few days the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of 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.


Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.


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