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

Write the molecular formulae of the following compound. Fluorspar

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प्रश्न

Write the molecular formulae of the following compound.

Fluorspar

एक शब्द/वाक्यांश उत्तर
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उत्तर

Fluorspar- CaF2

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पाठ 8: Metallugy - Solve the following Questions [पृष्ठ २९]

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संबंधित प्रश्‍न

M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context, answer the following:

1) What kind of combination exists between M and O?

2)How many electrons are there in the outermost shell of M?

3) Name the group to which M belongs.

4) State the reaction taking place at the cathode.

5) Name the product at the anode.


In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.


Which metal becomes black in the presence of hydrogen sulphide gas in air?


Explain giving equation, what happens when:

ZnCO3 is heated in the absence of air?


Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.


The two metals which are extracted by means of electrolytic reduction of their molten salts are ______.


Zinc blende ore can be converted into zinc oxide by the process of ______.


Give the principles of electromagnetic separation.


An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?


 Give the chemical formula of : 
Bauxite 


Which method of refining is used to get 99.8% pure aluminium?


The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.


Name : The metal which is liquid at room temperature.


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


Iron is _______.


The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.


In thermite welding a mixture of ____________ is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.


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

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

2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be


An alloy is


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