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प्रश्न
Answer the following question with respect by hydrogen :
Explain why powdered coke is sprinkled over than electrolytic mixture.
उत्तर
Powdered coke is sprinkled over the surface of the electrolytic mixture for the following reasons:
- To reduce heat loss by radiation
- To prevent burning of the anode
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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 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:
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Write balanced equation for the following reaction:
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Name the following:
The compound formed by the reaction between calcium oxide and silica.
Name the following :
A metal oxide that can be reduced by hydrogen
Give the equations for the reduction of copper oxide.
Give the equation for the reduction of Zinc oxide.
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?
