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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Explain the following reaction with the balanced equation. Zinc sulphide is heated strongly in excess of air

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प्रश्न

Explain the following reaction with the balanced equation.

Zinc sulphide is heated strongly in excess of air

एका वाक्यात उत्तर
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उत्तर

Zinc sulphide is heated strongly in excess of air to convert it to zinc oxide. This process is called roasting.

\[\ce{\underset{\text{Zinc sulphide}}{2ZnS_{(s)}} + 3O_{2(g)} -> \underset{\text{Zinc oxide}}{2ZnO_{(s)}} + \underset{\text{Sulphur dioxide}}{2SO_2↑}}\]

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

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संबंधित प्रश्‍न

Give a reasons for the following:

Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.


Why does a new aluminium vessel lose shine so soon after use?


Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?


Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?


The two metals which can be extracted just by heating their sulphides in air are ______.


The major ore of aluminium is known as ______.


Which metal can be extracted from the following ore?

Calamine


Give the principles of electromagnetic separation.


Give reasons, why aluminum is used in:

In aluminiothermy


Define the following term.

Mineral


Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.


Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________


Name the methods by which concentrated ore is converted to metallic oxide.


Name the following :

The Process of heating an ore to a high temperature in the presence of air.


Find the odd one out and give its explanation.


The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.


Write the molecular formulae of the following compound.

Fluorspar


Write the molecular formulae of the following compound.

Sodium aluminate


Which of the following metals exist in their native state in nature?

  1. Cu
  2. Au
  3. Zn
  4. Ag

The given reaction shows one of the processes to extract the metals like Iron and Manganese.

\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]

Identify the substance oxidised and reduced in the above reaction.


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