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प्रश्न
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
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उत्तर
Zinc Oxide
\[\ce{ZnO + C ->[400°C] Zn + CO}\]
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संबंधित प्रश्न
How is the following metallic oxide reduced? Write the equation:
Zinc oxide
Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.
Give equation for the following conversion: Aluminium to aluminium nitride.
Name a non-metallic element which has a metallic lustre
Name a non-metallic element which is a conductor of electricity.
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
Name the following :
A metal oxide that can be reduced by hydrogen
Answer the following question with respect by hydrogen :
Explain why powdered coke is sprinkled over than electrolytic mixture.
- A to F below relate to the source and extraction of either zinc or aluminium:
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
- Write down the three letters each from the above list which are relevant to
- Zinc
- Aluminium
- Fill in the blanks using the most appropriate words from A to F.
- The ore from which aluminium is extracted must first be treated with ………………. so that pure aluminium oxide can be obtained.
- Pure aluminium oxide is dissolved in ….. to make a conducting solution.
iii. Write the formula of cryolite.
Give the equations for the reduction of Lead (II) oxide.
