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प्रश्न
Complete flow chart given below.
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उत्तर
संबंधित प्रश्न
Name one metal which is extracted by reduction with carbon.
Name one metal which is extracted by electrolytic reduction.
Name one metal which is extracted by reduction with aluminium.
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
Define the term mineral.
What is meant by the 'concentration of ore'?
Which metal is extracted from calamine ore?
Calamine ore can be converted into zinc oxide by the process of:
(a) dehydration
(b) roasting
(c) calcination
(d) sulphonation
A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.
(a) Name the metal X.
(b) Name the metal oxide XO2.
(c) Which reducing agent can be used to reduce XO2 to obtain metal X?
(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Define the following term.
Gangue
Give the chemical formula of :
Cryolite
Define the term:
Flux
How an ore is concentrated by froth floatation process?
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
Write the name.
The molecular formula of main ore of aluminium –
Write the name.
Metals which are amphoteric in nature.
Explain concept with example/explain with the help of a balanced equation.
Ionic bond and ionic compounds
Observe the following diagram and write answers.
- Name the method.
- Write anode reaction and cathode reaction.
- Why fluorspar and cryolite are added in the mixture?
