हिंदी

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

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
अध्याय 8 Metallugy
Solve the following Questions | Q 4 (ii) | पृष्ठ २९

संबंधित प्रश्न

Define the Ore.


Give two uses of bronze.


Name two metals which are highly resistant to corrosion.


Name one metal which is extracted by:

Reduction with heat alone.


Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.


Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.


Which of the following is an iron ore?


A sulphide ore is converted into metal oxide by the process of ______.


Give reasons, why aluminum is used in:

In aluminiothermy


Give reasons, why aluminum is used in:

In making ships


Identify the process given in following passage and draw neat labelled diagram showing the process.
          Electrolysis of molten mixture of alumina (melting point > 20000C) is done in a steel tank. The tank has a graphite lining on the inner side. This lining does the work of a cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and fluorspar (CaF2) are added in the mixture to lower its melting point upto 10000C.

 


Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.


Choose the correct answer from the options given below:
The metal is a liquid at room temperature.


Define roasting.


Write the name.

The molecular formula of main ore of aluminium -


Right or wrong sentence?

In the electrolytic dissipation method of alumina, the lining of graphite acts as an anode.


Explain the following reaction with the balanced equation.

Ferric oxide is reacted with aluminium.


Read the following passage and answer the questions.

According to the reactivity series, zinc is more reactive than iron, iron is more reactive than silver. During study of this, a student dipped the iron nails in silver nitrate solution.

  1. What is reactivity series?
  2. What will happen when iron nails are dipped in silver nitrate solution?
  3. Which type of reaction happens when iron metal reacts with silver nitrate solution?
  4. What will happen if a zinc rod is used instead of iron nail?

Which of the statements about the reaction, \[\ce{ZnO + CO -> Zn + CO2}\] is correct?


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

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

Give a reason why Aluminium is preferably used in thermite reactions.


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