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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
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
Name a non-metallic element which forms acidic and neutral oxides
In order to obtain one tone of aluminium, the following inputs are required:
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.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
Name the following:
The compound formed by the reaction between calcium oxide and silica.
Answer the following question :
Name the process used for the enrichment of sulphide ore.
- 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.
Steel is an alloy of iron and ______.
Name two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
