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प्रश्न
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 ________
पर्याय
Al
Na
Mg
K
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उत्तर
The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is Al.
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संबंधित प्रश्न
Give appropriate scientific reasons for Zinc oxide can be reduced to zinc metal by using
carbon, but aluminium oxide cannot be reduced by a reducing agent
Give equation for the following conversion: Aluminium to aluminium nitride.
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
Name a non-metallic element which forms acidic and neutral oxides
Name a non-metallic element which is a conductor of electricity.
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
Answer the following question :
Name the process used for the enrichment of sulphide ore.
Complete the following by selecting the correct option from the choices given :
The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ________
- 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.
Name two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
