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प्रश्न
Write balanced equation for the following reaction:
Reduction of lead (II) oxide by carbon.
उत्तर
Reduction of lead (II) oxide by carbon :
\[\ce{PbO + C + heat -> Pb + CO}\]
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संबंधित प्रश्न
Write a balanced chemical equation for each of the following reactions :
(i) Reduction of copper (II) oxide by hydrogen
Give the chemical name and formula of 'cryolite'
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
Name the following :
A metal oxide that can be reduced by hydrogen
Answer the following question with respect by hydrogen : Identify the components of the electrolyte other than pure alumina and the role played by each.
Complete the following by selecting the correct option from the choices given :
The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is ________
- 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.
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
The following sketch represents the electroplating of an Iron cup with Nickel metal.
Study the diagram and answer the following questions:
- During electroplating, the iron cup is placed at the cathode. Why?
- Name the ion that must be present in the electrolyte.
- State one condition that is necessary to ensure that the deposit is smooth, firm and even.
- Write the reaction taking place at the cathode.
- What change would you observe at the anode?
