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

Write the molecular formulae of the following compound. Stannic oxide - Science and Technology 1

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प्रश्न

Write the molecular formulae of the following compound.

Stannic oxide

एक शब्द/वाक्यांश उत्तर
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उत्तर

Stannic oxide- SnO2

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पाठ 8: Metallugy - Solve the following Questions

संबंधित प्रश्‍न

Give the importance of the following for living beings:

Nitrogen


Why are alkali metals kept in kerosene oil?


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.

Give the effect of heat on their ?
oxides


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.

Give the effect of heat on their: nitrates


A student has been collecting silver coins and copper coins. One day she observed a black
coating on silver coins and a green coating on copper coins. Which chemical phenomenon is
responsible for these coatings? Write the names of black and green coatings.


Explain the following terms:

(c) slag


Which metal is used for:

making pipes, buckets, water tanks,


Which metal is used for:

making face creams


State two properties of brass that render it more useful for some purpose than its components.


A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.


Name the following:

Name an allotrope of a non-metal that allows electricity to pass through it.


What do you observe when hydrogen is passed over heated copper oxide?


Match the columns.

Group A Group B
1. ZnS a) Copper Sulphide
2. HgS b) Bauxite
  c) Cinnabar
  d) Zinc blend

Distinguish between:

Froth floatation - Leaching


Observe the figure and name and explain in brief the following method:


Explain the smelting process.


Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?


Explain the following term:

Metallurgy


After partial roasting, the sulphide of copper is reduced by ______.


Name the process that is employed to refine aluminium.


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