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प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
उत्तर
PbO or CuO
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संबंधित प्रश्न
Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name oxide of one metal which is reduced by (give equation): Electrolytic reduction
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
Give the chemical name and formula of 'cryolite'
Name a non-metallic element which is a liquid at ordinary temperatures
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
What metallic property is shown by the non-metal graphite?
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.
