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प्रश्न
Name a non-metallic element which has a metallic lustre
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उत्तर
Iodine
APPEARS IN
संबंधित प्रश्न
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
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
Name oxide of one metal which is reduced by (give equation): Electrolytic reduction
Name a non-metallic element which is a liquid at ordinary temperatures
Name a non-metallic element which is a conductor of electricity.
What is the type of bonding expected in a metallic chloride?
Answer the following question with respect by hydrogen : Identify the components of the electrolyte other than pure alumina and the role played by each.
- 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 copper oxide.
Give the equations for the reduction of Lead (II) oxide.
