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Explain the following reaction with the balanced equation. Sulphur burns in air - Science and Technology 1

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प्रश्न

Explain the following reaction with the balanced equation.

Sulphur burns in air

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उत्तर

Sulphur burns in air to form sulphur dioxide.

\[\ce{\underset{\text{Sulphur}}{S} + \underset{\text{Oxygen}}{O2} -> \underset{\text{Sulphur dioxide}}{SO2}}\]

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अध्याय 8: Metallugy - Explain the following reactions with the balanced equations

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
अध्याय 8 Metallugy
Explain the following reactions with the balanced equations | Q 4

संबंधित प्रश्न

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


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


What do you observe when silver nitrate is added to a solution of sodium chloride?


How will you obtain  Silver chloride from silver nitrate.

Also give balanced equations for the reactions


What is meant by the metal reactivity series ? State its importance, (any two points).


Write a chemical equation for the following event.

Zinc oxide is dissolved in dilute hydrochloric acid.


State what is meant by the ‘reactivity series of metals’


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


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


Explain the following reaction with the balanced equation.

Reaction of aluminium with oxygen


Compound X and aluminium are used to join railway tracks.

  1. Identify the compound X
  2. Name the reaction
  3. Write down its reaction.

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.


A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.


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.


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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