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Give the Chemical Name and Formula of 'Cryolite' - Chemistry

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प्रश्न

Give the chemical name and formula of 'cryolite'

एका वाक्यात उत्तर

उत्तर

Cryolite is Na3AlF6 and its chemical name is Sodium aluminium fluoride.

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Reduction of Metal Oxides to Metals
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Metallurgy - Exercise 3 [पृष्ठ १८१]

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फ्रँक Chemistry - Part 2 [English] Class 10 ICSE
पाठ 7 Metallurgy
Exercise 3 | Q 5.1 | पृष्ठ १८१

संबंधित प्रश्‍न

Write a balanced chemical equation for each of the following reactions :
(i) Reduction of copper (II) oxide by hydrogen


Name a non-metallic element which forms acidic and neutral oxides


Name a non-metallic element which has a metallic lustre


Name a non-metallic element which is a liquid at ordinary temperatures


With reference to the reduction of copper (II) oxide , iron (II) oxide, lead (II) oxide and magnesium oxide; place the oxides in order of increasing ease of reduction.[i.e. first write the oxide that is most difficult to reduce and at last, the oxide, that is most easily reduced.]


Answer the following question with respect by hydrogen : 
Explain why powdered coke is sprinkled over than electrolytic mixture.


Complete the following by selecting the correct option from the choices given :
The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ________


Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.


Give the equations for the reduction of copper oxide.


The following sketch represents the electroplating of an Iron cup with Nickel metal.

Study the diagram and answer the following questions:

  1. During electroplating, the iron cup is placed at the cathode. Why?
  2. Name the ion that must be present in the electrolyte.
  3. State one condition that is necessary to ensure that the deposit is smooth, firm and even.
  4. Write the reaction taking place at the cathode.
  5. What change would you observe at the anode?

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