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प्रश्न
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
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उत्तर
\[\ce{\underset{(black)}{CuO} + H2 ->[\Delta]\underset{(Pink/brown)}{Cu} + H2O}\]
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संबंधित प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
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 ____________. (Fe/Mg/Pb/Al)
An element L consists of molecules.
When L is heated with iron metal, it forms a compound, FeL. What chemical term would you use to describe the change undergone by L?
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name a non-metallic element which is a liquid at ordinary temperatures
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
Write balanced equation for the following reaction:
Reduction of lead (II) oxide by carbon.
Write the observation for the following:
A paper dipped in potassium permanganate solution is put on the mouth of a test tube containing sulphur dioxide gas.
- 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.
